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What is the difference between power frequency inverter and high frequency inverter?

Load comparison of power frequency and high frequency inverter

Consistent power inverter frequency will be heavier than high frequency inverter, high frequency inverter size, light, high efficiency, low no-load, but can not be connected to the inductive load of full load, overload capacity is relatively poor.

Comparison of basic principles of power frequency and high frequency inverter

High frequency circuit is more complex, high frequency inverter is composed of igbt module high frequency rectifier, battery converter, inverter and bypass want to combine. igbt module with the control plus in the gate drive to control its open and close, power off, igbt module rectifier control switch frequency is mostly in a few kilohertz to dozens of kilohertz, or even more than hundreds of kilohertz, far higher than the power frequency inverter, so it is called high frequency inverter.

Power frequency inverter is designed on the basic principle of traditional analog circuit, which is composed of SCR rectifier, igbt module inverter, bypass and power frequency boost isolation transformer. Therefore, the rectifier and transformer work frequency of power frequency 50Hz, also known as power frequency inverter.

Comparison of conversion efficiency between power frequency and high frequency inverter

Power frequency inverter is not high frequency inverter conversion efficiency, because of the complex hardware analog circuit burned in the microprocessor, in the way of program to control the operation of the inverter. In addition to the size reduction of high frequency inverter, its conversion efficiency is also improved.