The inverter is a electrical control device that uses the disrupting effect of the power semiconductor device to change the power supply power supply to another frequency.
Installation of motor inverter
Pay attention to the installation of motor inverters: Check whether there is a reverse in the line.Check whether the brake resistance line is connected to the right to check whether the voltage level of the lines of the line inspect the line.The inverter needs to be charged with capacitor.
Electric inverter wiring
How to connect motor frequency converters to the reincarnation line of motor inverter is mainly as follows. The three ports of R, S, and T are the input port for power supply, and the output port of the inverter is U, V, and W.Go to the motor.When we are used to the motors inverter gold habit, we first connect the intermediate relay and the motor to control the input of the public end. At this time, it is started.At this time, the motor is rotating. If the current is lost, the motor will stop.During the wiring of the entire motor inverter, of course, the setting of the frequency converter parameters is indispensable. We must set the frequency and operation method of the inverter. In addition to these basic settingsThe basic frequency is set. The rated voltage and the highest output voltage and the related time can be changed together. Finally, there are some data protection, function code LCE surveillance, start -up frequency maintenance time, etc.Subsequent settings.
Principle of motor inverter
Inverter -related waveforms three -phase AC asynchronous motor work principle: Three -phase AC asynchronous motor working principle: three -relatively symmetrical winding, which is connected to the three -relatively symmetrical AC power, and will generate a rotary magnetic field in the space.Index electromotive momentum and induction current, and the speed is lower than the synchronous speed and rotates the same as the synchronous speed direction.Chinas industrial power (civilian is also 50Hz) frequency is 50Hz, and the rotating magnetic field produced is also 50Hz, which is equivalent to 50/second = 3000/minute, which determines that the motor speed is 1500 (4 pole 2 pairs).Attachment: The calculation formula of the motor speed is n = 60F/T Note: n means the motor speed, F represents the frequency of power, my country is 50 Hz, and T represents the motor magnetic poles.The working principle of the frequency conversion motor is the same as the working principle of the three -phase AC asynchronous motor. The frequency conversion motor changes the speed of the motor by changing the frequency of input three -phase AC power. In one sentence, the frequency frequency is used to regulate the speed.Ordinary three -phase AC asynchronous motors can also be used for inverter motors. There is no essential difference. However, the inverter motor is optimized in the influence of frequency. The operating frequency of the inverter motor is generally 5Hz ~ 100Hz.
Electric inverter price
The price of 11KW inverter is about 700.

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