Rectifier: The rectifier is composed of vacuum tubes, thyristors, filters, etc., which convert alternating current into direct current.
Flat wave reactor: A flat wave reactor consists of an iron core and a coil to suppress DC components and improve power factor.
Filter capacitors: Filter capacitors consist of multiple capacitors that filter out the AC component of the output DC voltage.
Inverter: The inverter is composed of thyristors, switching devices, etc., which convert direct current into alternating current.
Brake resistance: The brake resistor consists of a resistor and a fan to consume the energy of the internal capacitance of the frequency converter.
Control circuit: The control circuit is composed of a single-chip microcomputer, a detection circuit, a protection circuit, etc., to control the output voltage and frequency of the inverter and realize various control functions.
