Brake power device and brake wave chopper

The invention provides a brake power device and a brake wave chopper. The device comprises a first brake circuit, a second brake circuit and a heat dissipation structure connected with the first and second brake circuits, wherein a first direct current positive potential input terminal is respectively and electrically connected with a collector electrode of a first insulated gate bipolar transistor, a first surge absorbing capacitor and a second surge absorbing capacitor; a first direct current positive potential output terminal is electrically connected with an emitting electrode of the first insulated gate bipolar transistor; a second direct current positive potential input terminal is respectively and electrically connected with a collector electrode of a second insulated gate bipolar transistor, a third surge absorbing capacitor and a fourth surge absorbing capacitor; a second direct current positive potential output terminal is electrically connected with an emitting electrode ofthe second insulated gate