The series intermediate frequency power supply is a form of resonance of the intermediate frequency power supply . Regardless of the resonant form of the IF power supply, the three-phase power supply must be rectified into a DC power supply, and then the DC power supply is inverted into a single-phase IF power supply to supply power to the load.

IF power rectifier series of classification

The rectifier is divided into three types. The rectifier type of the series resonant intermediate frequency power supply is different depending on the type of inverter.

1.   Three-phase uncontrollable rectifier

2.   Three-phase fully controlled rectifier,

3. Three-phase half-controlled rectifier,

Classification of inverters for IF power supplies

1.   Parallel resonant inverter,

2.   Series resonant inverter.

Serial IF power circuit basic form

The parallel inverter must use a three-phase full-controlled rectifier as the DC power supply. 

Three-phase fully controlled rectifier parallel resonant intermediate frequency power supply

Three-phase uncontrollable rectifier series resonant intermediate frequency power supply

Three-phase half-controlled rectifier series resonant intermediate frequency power supply