A CONVERTER FOR MOTOR - GENERATOR

摘要

The invention illustrates a compact power converter used for both motoring and power conditioning during generation of electric motor, formed by using a combination of metal-oxide semiconductor field-effect transistors (MOSFET), silicon controlled rectifiers (SCR) and a mechanical relay 20. MOSFETs are used for motoring and a combination of SCRs and MOSFET body-diodes work during generation. During generation the average charging current is controlled by varying the firing-angle of the SCRs based on a look-up table. Figure 1