D.C. Drive System With the Insulated Gate Bipolar Transistors

A reversible D.C. drive system, which employs a four-quadrant chopper with the insulated gate bipolar transistors (IGBT), is presented. The chopper circuit employs a "half-bridge" configuration. The operation of the converter was tested at a command frequency of [1-10] kHz. Except at very high power levels, the four-quadrant chopper has certain advantages such as high operational frequency, smooth and linear control, high efficiency and fast response