Controlled AC/DC converters are usually called controlled rectifiers that convert an AC power supply source voltage to a controlled DC load voltage [1–3]. Controlled AC/DC conversion technology is a vast area in research and industrial applications. Usually, the rectifier devices are thyristor (or SCR—silicon controlled rectifier), gate-turn-off thyristor (GTO), power transistor (BT), insulated gate bipolar transistor (IGBT), and so on. The most generally used device is thyristor (or SCR). The controlled AC/DC converters consist of thyristor/diode circuits. They can be sorted into the following groups:

Single-phase half-wave rectifiers

Single-phase full-wave rectifiers with half/full control

Three-phase rectifiers with half/full control

Multipulse rectifiers