Humanity to the fullest takes advantage of modern technical inventions that have a fundamental novelty. Life sometimes makes you learn tricked-out layouts, marvel at the tricks of home-grown techies. And even without being fans, we just sometimes want to be in the subject. In fact, to understand the issue, you just need to go from the elementary to the complex, from the plot to the denouement. And it’s better to start by clarifying incomprehensible things.
What is a three-phase network?
Phase means a change in direction between the values \u200b\u200bof the mains at the same time. In the case of 3 p. current, use three voltages oriented in 3 different directions. Thus, the network voltage is calculated by adding vector quantities, and does not equal the algebraic sum of all voltages.
Consider the example of the same engine. When a voltage of 380 V is applied to the coil, different pairs of phases are used in a certain sequence for each winding. Actually, therefore, they characterize the 380 circuit by adding (220 + 220 + 220 \u003d 660) V. This explanation is very simplified and not completely complete, but hopefully well presented. Yes, and it is written so that it is clear to us, electric "kettles".
In a technical syllable, in a three-phase power supply network, the circuit of conductors carries three variable values \u200b\u200bof physical quantities that reach instantaneous peaks at different times. Taking one conductor as a reference, the other two currents are one-third and two-thirds of the current cycle lagging in time. This delay between phases has the effect of power transfer during each cycle, and also allows the production of a rotating magnetic field.
Wiring Methods
Engines in everyday life and amateur practice drive a variety of mechanisms - a circularly working saw, an electric planer, a fan, a drilling machine, and pumping equipment. Not knowing how electric motors work, it is better not to go into the jungle with chastotniki. Engines are:
- permanent
- and alternating current (asynchronous and synchronous).
The mechanism includes a rotor and a stator. Studied at school the principle of electromagnetic induction is the basis of the principle of their work. Most of the electric motors produced are “asynchronous”. Where did this word come from? The rotation frequency of the moving part (rotor) always lags behind the rotation frequency of the stationary magnetic field (stator). The output frequency scale varies - 1000, 1500, 3000 ... rpm. And all because the rotor is able to rotate on the shaft with different speeds inside the core.
By the number of poles, aggregates are single, two, or three-pole. In the stator core, the latter are located along the winding for each phase, the ends of which are brought to the terminal box. How can I increase the speed of an induction motor (HELL) without losing power? By changing the number of pole pairs.
To move on to other methods, and there are two more, we can not do without the symbols “star” and “triangle”. Three windings of the coil can be connected in two ways: at a point or in a circle, from here came the names of the connections “star”, “triangle”.
What will happen if the three-phase motor connected by a triangle is connected to the 380 V network? Starting current values \u200b\u200bin this case can increase by seven times, which will lead to network overload. When dealing with engines, you need to be extremely careful. When buying a product, be sure to think about it if the nameplate shows a triangle / star icon (and not vice versa a star / triangle) at the same voltage of 220/380 V.
How to connect a three-phase motor to a 220 V network
The use of a three-pole HELL in a single-phase power supply is of interest to many owners of private homes. Aggregates are in increasing demand in the household. By their design, they are quite simple and are unpretentious in operation. However, in terms of connecting the motor to a single-phase network, it is not so simple.
The pulsating field of a single-phase current is not able to bring the rotor of the electric motor into rotation - such a current must be converted to multiphase and only then fed to the unit.
You should not pay attention to rationalization proposals using LATs and other home-made constructions. We do not engage in the field of the beyond NANO technology and science fiction; you can’t count on the fee for supporting the “Nobel laureates”. Today, two sensible methods for converting single-phase current to multiphase are known - this is connecting the unit through:
- phase shifting capacitor;
- frequency converter.
Consider them in order.
- Capacitor phase shift
It is not a problem to create a rotating magnetic field in three-phase circuits; during energy generation, EMF is induced in the stator windings due to the rotation of the magnetized rotor. Some manage to resort to simple "tricks". Various schemes are used, for the compilers of which, the main question is to ensure the operation of electrical equipment without loss of power. For example, there is a method of phase shift in the windings in relation to each other.
It is enough to connect a capacitor in parallel to one of the windings, first selecting the device rating in such a way as to provide the necessary phase shift. This option is not bad, if you follow the old rule: the fewer details and they are simpler, the more reliable the system as a whole. A capacitor, of course, is a pretty cheap thing, put in a minute, but requires special skills. But the second method with a converter, although expensive, but pays off with convenience. Agree, a very important factor.
- Single Phase Frequency
The frequency in our network is constant and equal to 50 Hz. The frequency counter serves to convert a single-phase alternating current of 50 Hz to three-phase, with a frequency of 1 to 800 Hz. The whole process technology comes down to controlling the speed of rotation of an induction motor. Connecting the inverter means that you select the correct cable cross-section, types of wires, and additional equipment. Do not think that opening the page in the instructions, you will immediately become clear. You may not even achieve the result by connecting the wires according to the scheme, if you do not pay attention to some nuances. For what exactly?
Do-it-yourself converter from one to three phases.
Since the three-pole motor needs to be powered via an emergency from a single-phase network, then there are two cables: one is two-core to the frequency (up to 50 m you can use only unshielded cable, shielded - up to 15 m), from only three-core. One of the core wires is grounding, the rest is phase. The section is selected according to the technical passport for the chastotnik. The required voltage in the wires is obtained by the current and resistance (according to the cross section) of the cable according to the familiar formula: U \u003d R * I. Estimated data should be taken by the PUE.
Frequency guards are advised to buy with a double margin of at least 2 kV. Its nominal value is designed only for the power of the machine, which means that in the best case it will turn off due to heat, in the worst case it will smoke. All of them are assembled in the same way, on two thyristors controlled by a multivibrator. The scheme is simple. It is better to choose simple and powerful. Buy where there is a choice and always with a guarantee.
220-380 frequency converter, whose company is better?
We will answer the question on the merits. There are countless Asian manufacturers in the sales market for such equipment. We will stop listing. Domestic PE collector is a kind of lottery (sometimes it depends on what day of the week the device is assembled).
Siemens frequency response chambers are usually fully compliant with the requirements. Fairly simple to set up PE products manufactured by ABB or Danfoss. It is priced and quality better than others. Buy without hesitation. Judging by the reviews, they have a very decent device. Dynamic performance is enhanced by vector control, which also provides high torque at low frequencies during start-up and operation.
Universal compact PE models do an excellent job of converting network parameters, their obvious advantages are expressed in the following:
- the ability to generate a "full" three-phase current;
- lack of losses in engine power;
- suitability for any design of the electric motor;
- constructivity is very simple.
- own energy consumption is minimal.
Where frequency converters are used single-phase input-output 1 f. 220 V
Asynchronous motors (AM) are more often used in everyday life than in industry, in particular in a system of single-pole duct fans and water pumps. It's no secret that there are difficulties associated with adjusting the speed of rotation of blood pressure. What is the task of unipolar frequency converters input-output 220-220.
The unevenness of the torque can lead to abnormal noise and vibration in the unit. To adjust the speed of three-phase electric motors, single-pole chastotniks 220/380 V (input / output) are used, sometimes with a special controller that serves to control the device.
These types of converters are designed to work in technological (pumps and fans, conveying mechanisms, extruders, mixers, etc.) and energy-saving equipment (pump control stations, climate and air conditioning systems, etc.). Models are available with the possibility of mounting on a DIN rail. Have a wide outlet. The smart control panel provides comfortable working conditions.
In order to avoid the complications that are often encountered during operation of 3-pole electric motors in single-phase networks, the following rules should be followed:
- the power of the engine used as an emergency is selected greater than the power of the electric drive connected to it;
- in practice, 4 kW converters are able to solve all existing economic problems in a private house. You can focus on the load of 2-3 kW, which is acceptable for the grid;
- the operating current of the converter in normal mode should be greater than its value indicated in the passport of this type of electric motor (otherwise the emergency will simply burn out);
- It is carried out in strict sequence: the emergency starts first, then 3-pole consumers. The equipment turns off in the reverse order.
Output
Today is not "yesterday", but if it happens that you need to connect a three-pole 230 V motor, we think you can handle it. Indeed, everything should be clear. You will need a regular 1-pole 220-380 V frequency converter.
To protect the environment, rules are generally established according to which the use of the most economical equipment is mandatory. A 3-phase frequency converter and other similar devices do an excellent job of this. This modern equipment allows you to achieve better results with small investments.
Technology benefits
A modern 3-phase frequency converter allows you to start a three-phase asynchronous motor using a standard single-phase grid with a voltage of 220 volts. The same device is known as an inverter, frequency converter or emergency. Today, many companies are engaged in their creation, experienced craftsmen can even create a similar device according to the scheme at home.
However, we offer the most optimal option - to purchase high-quality equipment from Korean and Japanese manufacturers offering you such advantages:
- Top quality. Companies from Southeast Asia managed to achieve excellent results in a short period of time, their frequency converters from one phase to three do their job perfectly;
- Multifunctionality. The device allows you to adjust the rotation speed of the electric motor in a convenient mode, smoothly change it and even provide movement in the opposite direction;
- Safety. A modern 3-phase frequency converter provides protection of the power plant from voltage surges and other unpleasant conversions in the power grid. Producing a smooth deceleration of rotation, it increases the engine resource, prolonging its service life.
By effectively adjusting the speed of the electric motor, the device optimizes energy costs, increasing efficiency without harming the equipment.
Application
On our website you can buy a 3-frequency converter, which can be successfully used together both at the production site and at home. Previously, phase-shifting capacitors were used to ensure the operation of complex propulsion systems in the absence of the required power grid, but this technology has demonstrated its inefficiency. As soon as new state of emergency appeared, they quickly gained high popularity. They can be used for pumping stations, processing machines, concrete mixers and other similar equipment.
Before making a choice in favor of one of the units presented in our assortment, conduct a thorough analysis of the requirements of the electric motor with which it will be used. The voltage at the inverter output in all respects must meet the needs of the motor, the current from the power grid must also suit your CNC.
The price of a 3-phase frequency converter set by our company is consistent with the quality of the products we purchase - we supply only the best equipment manufactured by world-famous companies.
About 220 volts are constantly passing through a regular household electrical network. And for the full-fledged, efficient operation of some equipment, it is necessary that the electric network is three-phase under a voltage of 380 volts. This can be achieved using the universal 220 V to 3 phase output, which, together with asynchronous motors, is able to completely replace electric motors operating at constant frequency current. This is possible due to the fact that the equipment has higher reliability and lower cost.
The disadvantage of electric DC units, which require 3 phases, is their low efficiency, relatively high maintenance costs and low efficiency. They have a simple device for controlling the speed of rotation of internal elements, but their weak point is directly the electric motor itself. His work is often accompanied by sparking brushes. Also, his collector quickly fails, from the continuous impact of erosion, the occurrence of which is due to electromagnetic field. They have some restrictions on use, for example, they can not be installed indoors, which are very dusty or may contain explosive fumes.
But at the same time, induction motors also have their drawbacks. During operation, vibrations of various intensities may occur inside electrical units or extraneous noise may appear. This is due to the uneven distribution of torque, in order to stabilize it, use universal frequency converters. They allow you to easily adjust the speed of rotation using special control panels, while making the operation of electric motors more efficient.
Three Phase Frequency Converters can be absolutely any design and size, regardless of which, they all perfectly fulfill their intended purpose, the conversion of the input parameters of the power grid. Main advantages of this electrical equipment are as follows:
- minimal power losses, or their complete absence;
- elementary structural device;
- the possibility of using at the same time electric motors of absolutely any design;
- full conversion of a single-phase network into 3 phases;
- own low energy consumption;
- optimal electronic control system that allows you to control all work processes that occur during operation.
But, to avoid complications during operationarising when working in single-phase equipment networks in three phases, some requirements must be met:
- In domestic conditions, when operating frequency converters, do not create a load inside the electrical network of more than 3 kWthat is enough to solve all economic needs.
- Equipment connection must be carried out in a strictly established sequence. The first to start the frequency converter in three phases, only after the start of its operation, the remaining elements are started. The process of shutting down equipment should be the other way around.
- After connecting all the electric motors, their total rated power consumption should be less than the current (voltage) value at the output of the frequency converter.
- To exclude the possibility of burn-out of the transforming equipment into 3 phases, at their output, under standard, normal operation, the operating current should have a value greater than that consumed by the electric motor.
Frequency Converter Features
All of them have approximately the same output characteristics, so you can consider them with the example of a frequency converter from INNOVERT. It is very simple during operation, it is a multifunctional device, and its installation and subsequent commissioning will not cause any difficulties.
Frequency converter 220 V output 3 phases Designed to work in conjunction with electric motors, it can be used both for domestic needs and in industry. It has a control panel that can be removed if necessary. This allows, using special laid cables, to extend the frequency inverter operation controls to any desired location, and place the main unit itself inside an insulated, sealed cabinet in order to exclude harmful effects on it.
Based on the characteristics of the output and input voltage, this converter, is divided into three types:
- three-phase input of 380 Volts - three-phase output of 380 Volts;
- single-phase input 220 Volts - three-phase output 380 Volts;
- single-phase input of 220 Volts - single-phase output of 220 Volts.
This means using inside the electrical circuit frequency converter, you can connect:
- 3-phase asynchronous electric motor delivering power up to 500 kW to a three-phase power supply network with a rated alternating voltage of 380 volts;
- an asynchronous electric drive with one phase, issuing power up to 2.5 kW, to a single-phase power supply network with a rated alternating voltage of 220 volts for domestic use;
- 3-phase asynchronous electric motor, operating at a power of up to 3.5 kW, to a single-phase household network.
Frequency converter has the following functional features:
- the possibility of using the reverse movement of the electric drive;
- compensation of moments of sliding;
- braking or acceleration time, adjustable using four modes;
- the ability to choose from predefined 15 speed modes;
- it is possible to suspend the electric motor by means of a direct current;
- temperature control, both the main unit and the electronic module with transistors;
- the rotation speed is regulated in three ways, using the transmission of analog or digital signals within the network, or by the potentiometer knob located on the control panel;
- speed regulation using PLC mode;
- a device for protecting the electric motor from sudden fluctuations or surges in the values \u200b\u200bof voltage and current inside the mains, and from overload;
- control or monitoring of technological parameters, such as power consumption, element temperature and pressure, using the PID mode
- the ability to use either of the two modes of operation, range adjustment when changing the value of the rated torque in the ratio of 1 to 20, or slip compensation under control in the U / f mode (quadratic or linear);
- the possibility of additional equipment with DC chokes (reactors) to provide protection, or dynamic braking elements.
The three phase converter possesses the following technical characteristics:
- 8 inputs for digital signals, 6 of which use IMD mode;
- 2 outputs for analog signals with a load current of up to 20 mA, voltage up to 10 V;
- modulation with a discrete frequency of 0.1 kHz during switching, not exceeding 15 kHz;
- frequency fixing with preset 15 different tuning modes;
- engine rotation speed is cyclically controlled using the built-in controller;
- 2 scalable inputs for analog signals with voltage values \u200b\u200bup to 10 Volts, load current up to 20 mA;
- inside the frequency converters with a capacity of up to 15 kW, brake keys are additionally installed;
- pID controller
- 1 output with a contact for switching - 3 Amperes and 250 Volts;
- the current frequency at the output of the device reaches 400 Hz;
- two transistor outputs providing a constant signal, one of which is for IMD.
Frequency converter 220 to 3 phase output has high reliability and overall performance. It can be used in conjunction with a variety of purpose motors, with a large value of rated power, which operate under the influence of a small load. It is able to withstand overload for one minute, even if there is a sharp two-time excess of the load current.
The converter can be used both in various areas of industrial production, and in the domestic sphere. Most often it is used to ensure the smooth operation of technological equipment such as submersible pumps, flow pumps, winding machines, conveyors, compressors, extruders, conveyors, supply fans, etc.
The rotor of any electric motor is driven by the forces caused by a rotating electromagnetic field inside the stator winding. The speed of its revolutions is usually determined by the industrial frequency of the electrical network.
Its standard value of 50 hertz implies the completion of fifty periods of oscillation in one second. In one minute their number increases by 60 times and amounts to 50x60 \u003d 3000 rpm. The rotor rotates the same number of times under the influence of an applied electromagnetic field.
If you change the value of the frequency of the network attached to the stator, then you can adjust the speed of rotation of the rotor and the drive connected to it. This principle is the basis for electric motor control.
Types of frequency converters
By design, frequency converters are:
1. induction type;
2. electronic.
Asynchronous motors, made and launched in generator mode, are representatives of the first kind. They work with low efficiency and are noted for low efficiency. Therefore, they are not widely used in production and are used extremely rarely.
The electronic frequency conversion method allows you to smoothly adjust the speed of both asynchronous and synchronous machines. In this case, one of two management principles can be implemented:
1. according to a predetermined characteristic of the dependence of rotation speed on frequency (V / f);
2. vector control method.
The first method is the simplest and less perfect, and the second is used to precisely control the rotation speeds of critical industrial equipment.
Features of vector control of frequency conversion
The difference between this method is the interaction, the influence of the converter control device on the "spatial vector" of the magnetic flux, rotating with the frequency of the rotor field.
Algorithms for the operation of converters on this principle are created in two ways:
1. sensorless control;
2. flow control.
The first method is based on the assignment of a certain dependence of the alternation of sequences of the inverter for pre-prepared algorithms. In this case, the amplitude and frequency of the voltage at the converter output are regulated by sliding and load current, but without using feedbacks on the rotor speed.
This method is used when controlling several electric motors connected in parallel to a frequency converter. Flow control involves monitoring the operating currents inside the motor with their decomposition into active and reactive components and making adjustments to the converter to set the amplitude, frequency and angle for the output voltage vectors.
This allows you to increase the accuracy of the engine and increase the boundaries of its regulation. The use of flow control extends the capabilities of drives operating at low speeds with high dynamic loads, such as crane lifting devices or winding industrial machines.
Using vector technology allows you to apply dynamic adjustment of torques to.
Equivalent circuit
The basic simplified electric circuit of an induction motor can be represented as follows.
A voltage u1 is applied to the stator windings having active R1 and inductive X1 resistances. It, overcoming the resistance of the air gap Xb, is transformed into the rotor winding, causing a current in it, which overcomes its resistance.
Equivalent vector diagram
Its construction helps to understand the processes taking place inside the induction motor.
The stator current energy is divided into two parts:
iµ - stream-forming fraction;
iw is the moment-forming component.
In this case, the rotor has an active resistance of R2 / s, depending on the slip.
For sensorless control are measured:
voltage u1;
current i1.
According to their values \u200b\u200bare calculated:
iµ is the current-forming component of the current;
iw is the moment-forming quantity.
The calculation algorithm has already incorporated an electronic equivalent circuit of an induction motor with current regulators, which takes into account the conditions of saturation of the electromagnetic field and loss of magnetic energy in steel.
Both of these components of the current vectors, differing in angle and amplitude, rotate together with the coordinate system of the rotor and are converted into a stationary orientation system along the stator.
According to this principle, the parameters of the frequency converter are adjusted to the load of the induction motor.
The principle of operation of the frequency converter
The basis of this device, which is also called an inverter, is a double change in the waveform of the power supply network.
Initially, the industrial voltage is supplied to the power rectifier unit with powerful diodes that remove the sinusoidal harmonics, but leave the signal ripple. To eliminate them, a capacitor bank with an inductance (LC filter) is provided, providing a stable, smooth shape to the rectified voltage.
Then the signal is fed to the input of the frequency converter, which is a three-phase bridge circuit of the six IGBT or MOSFET series with diode overvoltage protection diodes. Thyristors used earlier for these purposes do not have sufficient speed and work with large noise.
To enable the engine “braking” mode, a controlled transistor with a powerful resistor dissipating energy can be installed in the circuit. This technique allows you to remove the voltage generated by the motor to protect the filter capacitors from overcharging and failure.
The vector control method of the frequency of the Converter allows you to create circuits that automatically control the signal systems ATS. To do this, use the control system:
1. amplitude;
2. PWM (Latitudinal Pulse Simulation).
The amplitude control method is based on a change in the input voltage, and the PWM method is based on the switching algorithm of power transistors with a constant input voltage.
With PWM control, a signal modulation period is created when the stator winding is connected in strict order to the positive and negative terminals of the rectifier.
Since the frequency of the generator cycle is quite high, in the winding of an electric motor with inductive resistance, they are smoothed to a normal sinusoid.
PWM control methods allow to eliminate energy losses as much as possible and provide high conversion efficiency due to the simultaneous control of frequency and amplitude. They became available thanks to the development of control technologies for power lockable thyristors of the GTO series or bipolar brands of IGBT transistors with an insulated gate.
The principles of their inclusion for controlling a three-phase motor are shown in the picture.
Each of the six IGBTs is connected in an anti-parallel circuit to its reverse current diode. In this case, the active current of the induction motor passes through the power circuit of each transistor, and its reactive component is sent through diodes.
To eliminate the influence of external electrical interference on the operation of the inverter and the motor, the design of the frequency converter circuit may include, eliminating:
radio interference;
electrical discharges induced by operating equipment.
The controller signals their occurrence, and shielded wiring between the motor and the inverter output terminals is used to reduce the impact.
In order to improve the accuracy of asynchronous motors, the control circuit of frequency converters includes:
input communications with advanced features of the interface;
integrated controller;
a memory card;
software;
information LED display showing the main output parameters;
brake chopper and built-in EMC filter;
a cooling system for a circuit based on blowing fans with an increased resource;
function of warming up the engine by means of direct current and some other features.
Operational wiring diagrams
Frequency converters are designed to work with single-phase or three-phase networks. However, if there are industrial DC sources with a voltage of 220 volts, then inverters can also be powered from them.
Three-phase models are calculated on a network voltage of 380 volts and give it to the electric motor. Single-phase inverters are powered by 220 volts and at the output they produce three phases spaced apart in time.
The connection diagram of the frequency converter to the motor can be performed according to the schemes:
stars;
the triangle.
The motor windings are assembled into a "star" for a converter powered from a 380-volt three-phase network.
According to the "triangle" scheme, the motor windings are assembled when its converter is connected to a 220-volt single-phase network.
When choosing a method of connecting an electric motor to a frequency converter, one must pay attention to the ratio of powers that a working motor can create in all modes, including slow, loaded start-up, with inverter capabilities.
You can not constantly overload the frequency converter, and a small margin of its output power will provide it with a long and trouble-free operation.
3 phase inverter
Each specialist calls this device differently: “Frequency converter, inverter, three-phase frequency converter, frequency converter, frequency converter for asynchronous motor ... etc.”, the essence does not change. Frequency converter-allows for smooth adjustment of the rotational speed of the rotor of an induction motor in a wide range of its frequency.Starting, braking, reverse, and, as already mentioned, a change in the speed of rotation of the electric motor, all of these factors will be safe and always under strict control, if there is a frequency converter.
We can offer you a three-phase frequency converter for 380v, the following capacities: 1.1 kW, 1.5 kW, 2.2 kW, 3 kW, 4 kW, 5.5 kW, 7.5 kW, 9 kW, 11 kW, 15 kW , 18.5 kW, 22 kW, 30 kW, 37 kW, 45 kW, 55 kW, 75 kW, 90 kW, 110 kW, 132 kW, 160 kW, 185 kW, 200 kW, 285 kW, 315 kW, 350 kW , 400 kW, 500 kW.
Pay attention to the mechanical power that your engine can develop, and not its energy consumption. The rated current of the inverter must exceed the rated current of the motor.
Principle of operation
The frequency converter operates on the principle of double energy conversion. In the rectifier, the input voltage is converted, in the filter it is smoothed, through the inverter it comes out with a different amplitude and frequency. Output transistors provide the necessary voltage for power supply.
To reduce electromagnetic interference, the frequency converter must be equipped with an EMC filter, at the input and output.
The advantages of using frequency converters
In the case of pumping equipment, the advantages of using a frequency converter are obvious. Full control of the entire process, smooth start and stop of the engine, which helps to avoid harmful transients, namely, water hammer in pipelines - when starting and stopping the pump, smooth adjustment of the pump process parameters in accordance with the set operating point of the hydraulic system, maintaining the specified pressure value in system.
The motor is started at low current, limited at the nominal value, which positively affects its performance and increases durability, as well as reduces the requirements for the power of the mains, as a result of which significant energy savings.
General advantages
- Power saving
- Extending the life of process equipment.
- Control over technical parameters.
- Reduced repair costs.
- Improving production efficiency.
Main applications of frequency converters
Our frequency converters can be integrated into the control systems of electric motors and electric drives of the following objects:
Hot and cold water pumps in water and heat supply systems, auxiliary equipment of boiler houses, thermal power plants, thermal power plants and boiler units;
drilling rig drives, electric drills, drilling equipment;
Sand and pulp pumps in technological lines of concentration plants;
Water treatment and water supply systems
Ventilation equipment
Handling equipment
Conveyor Protection
Various production lines
Pumps of various types (water, oil, oil, food, etc.)
Roller racks, conveyors, conveyors, other vehicles with electric control;
power manipulator mechanisms
Dispensers and feeders;
Elevator equipment;
Cutters, crushers, mills, mixers, extruders;
Centrifuges of various types;
Homogenizers from laboratory to industrial with productivity up to 50 000 l / h
Equipment for packing
Lines for the production of film, cardboard and other tape materials;
Equipment for rolling mills and other metallurgical units;
Electric drives of machine equipment;
Everything that is somehow connected with electric motors and electric drives can and should be equipped with a frequency converter.
In the domestic market, a frequency converter of Russian and foreign production is widely represented:
Europe and America: Siemens, ABB, SEW Eurodrive, Control Techniques (Emerson), Schneider Electric, Grundfoss, Danfoss, K.E.B., Lenze, Allen-Breadly (Rockwell Automation), Bosch Rexroth. Emotron, Vacon, SSD Drives (Parker), Baumuller, Elettronica Santerno, General Electric, AC Technology International (Lenze) and WEG (Brazil).
Asia: Mitsubishi Electric, Omron-Yaskawa, Panasonic, Hitachi, Toshiba, SunFar, Fuji Electric, LG Industrial Systems, HYUNDAI Electronics, Delta Electronics, Tecorp, Long Shenq Electronic, Mecapion.
Russia: Vesper, Aries, Leader.
Recently, Chinese frequency inverters have come close in quality to leading European brands. It is no secret to anyone that eminent world manufacturers have long and successfully produced their products at factories in the Middle Kingdom, while the quality of their products remains at the highest level.
