What are the high current inverters
What are the high current inverters? There are many kinds of high current inverters, which can be classified according to different methods.
1. According to the frequency of inverter output AC energy, it can be divided into power frequency inverter, intermediate frequency inverter and high frequency inverter. The frequency of power frequency inverter is 50 ~ 60Hz; The frequency of intermediate frequency inverter is generally 400Hz to more than ten kHz; The frequency of high-frequency inverter is generally more than ten kHz to MHz.
2. According to the number of phases output by the inverter, it can be divided into single-phase inverter, three-phase inverter and multi-phase inverter.
3. According to the direction of the output electric energy of the inverter, it can be divided into active inverter and passive inverter. The inverter that transmits the electric energy output by the inverter to the industrial power grid is called active inverter; The inverter that transmits the electric energy output by the inverter to a certain electric load is called passive inverter.
4. According to the form of the main circuit of the inverter, it can be divided into single ended inverter, push-pull inverter, half bridge inverter and full bridge inverter.
5. According to the type of main switching devices of the inverter, it can be divided into thyristor inverter, transistor inverter, field effect inverter and insulated gate bipolar transistor (IGBT) inverter. It can also be divided into two categories: "semi controlled" inverter and "fully controlled" inverter. The former does not have self closing ability, and the components lose control function after being turned on. Therefore, it is called "semi controlled" ordinary thyristor, which belongs to this category; The latter has self turning off ability, that is, the on and off of devices without devices can be controlled by the control pole, so it is called "fully controlled". Power field effect transistors and insulated gate double weight transistors (IGBT) belong to this category.
6. According to DC power supply, it can be divided into voltage source inverter (VSI) and current source inverter (CSI). In the former, the DC voltage is nearly constant and the output voltage is alternating square wave; In the latter, the DC current is nearly constant and the transmission current is alternating square wave.
7. According to the waveform of inverter output voltage or current, it can be divided into sine wave output inverter and non sine wave output inverter.
8. According to the inverter control mode, it can be divided into frequency modulation (PFM) inverter and pulse width modulation (PWM) inverter.
9. According to the working mode of inverter switching circuit, it can be divided into resonant inverter, fixed frequency hard switching inverter and fixed frequency soft switching inverter.
According to the inverter commutation mode, it can be divided into load commutation inverter and self commutation inverter.
Do you know what high current inverters are?
Main uses of high current inverter
There are many kinds of high current inverters. High current inverters are mainly used for AC to AC conversion. They are generally used abroad to convert AC110V and 50 / 60Hz electricity into AC220 50Hz. It is an AC to DC and then AC, that is, rectifier inverter, which can be regarded as rectifier + inverter. There is also an on-board power converter, which converts DC into AC 220V 50Hz. This is an inverter process, which can be regarded as a high current inverter.
