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Inverter Has The Ability Of Self Turn-off

The concept understanding of inverter

Inverter is the process of converting AC energy into DC power, called rectification, the completion of the rectification function of the circuit called rectification Circuit, the realization of the rectification process of the device known as rectification equipment or rectifier. Correspondingly, the process of converting DC energy into alternating current is called inverter, and the circuit which completes the inverter function is called the inverter circuit, and the device which realizes the inverter process is called the inverter device or inverter.

A detailed explanation of inverter classification

1. According to the inverter output the frequency of AC power, can be divided into frequency inverter, intermediate frequency inverter and high-frequency inverter. The frequency of power frequency inverter is $number inverter, and frequency inverter is usually 400Hz to more than 10 khz, and high-frequency inverter frequency is usually more than 10 khz to MHz.

2. According to the inverter output phase number, can be divided into single-phase inverter, three-phase inverter and polyphase inverter.

3. In accordance with the inverter output power of the whereabouts, can be divided into active inverter and passive inverter. The inverter which converts the power output from the inverter to the industrial power grid is called the active inverter, and the inverter which converts the output of the inverter to some kind of electric load is called the passive inverter.

4. According to the form of the main circuit of inverter, can be divided into one-terminal inverter, push-pull inverter, Half-bridge inverter and full bridge type inverter.

5. According to the type of inverter main switch device, it can be divided into thyristor inverter, transistor inverter, field effect inverter and insulated gate bipolar transistor (IGBT) inverter. It can be summed up as "half control type" inverter and "Full Control" inverter two major categories. The former, does not have the ability to shut off, components in the conduction after the loss of control, so called "half control type" ordinary thyristor that belongs to this category; the latter has the ability of self turn-off, that is, the conduction and turn-off of the device can be controlled by control, so it is called "Full Control type", power field effect transistor and insulated gate double power Transistor (IGBT) belong to this kind.

6. According to DC power supply, can be divided into voltage-source inverter (VSI) and current-source inverter (CSI). The former, the DC voltage is nearly constant, the output voltage is alternating square wave; the latter, the DC current is near constant, and the current is alternating wave.

7. According to the inverter output voltage or current waveform points, can be divided into sine wave output inverter and non-sinusoidal output inverter.

8. According to the control mode of inverter, it can be divided into FM type (PFM) inverter and PWM inverter.

9. According to the working mode of the inverter switch circuit, it can be divided into resonant inverter, fixed frequency hard switching inverter and fixed frequency soft-switching type inverter.

10. According to the inverter converter mode, can be divided into the load-converter inverter and the self-commutation converter.

Inverter is the process of converting AC energy into DC power, called rectification, the completion of the rectification function of the circuit called rectification Circuit, the realization of the rectification process of the device known as rectification equipment or rectifier. Correspondingly, the process of converting DC energy into alternating current is called inverter, and the circuit which completes the inverter function is called the inverter circuit, and the device which realizes the inverter process is called the inverter device or inverter.


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