Contactless chopper type voltage stabilizer

The invention relates to a contactless hopper type voltage stabilizer. The contactless hopper type voltage stabilizer comprises a compensation transformer T1, four IGBTs (Insulated Gate Bipolar Translators), four silicon controlled rectifiers, a capacitor and an inductor, wherein an input voltage live wire is connected with one end of a secondary side of the compensation transformer T1; the other end of the secondary side of the compensation transformer T1 is connected with an collector electrode of the IGBT1 and is connected with a steady voltage output terminal; the IGBT1 is connected with the IGBT2 in series; a collector electrode of the IGBT2 is connected with the inductor L1 and a collector electrode of the IGBT4; the other end of the inductor L1 is connected with one end of the capacitor C1, one end of the silicon controlled rectifier VS2 and one end of the silicon controlled rectifier VS4; the silicon controlled rectifier VS2 is connected with the silicon controlled rectifier VS1 in series; the silicon controlled rectifier VS4 is connected with the silicon controlled rectifier VS3 in series; an intermediate point of two series circuits is connected with both ends of a primary side of the compensation transformer T1; the other end of the silicon controlled rectifier VS1 and the other end of the silicon controlled rectifier VS3 are connected with a null wire; the other end of the capacitor C1 is connected with the null wire; an emitter electrode of the IGBT4 is connected with an emitter electrode of the IGBT3; a collector electrode of the IGBT3 is connected withthe null wire.