초록 ▼

Prior VSCF inverters have utilized relatively expensive bipolar transistors and associated base drive circuits together with an input autotransformer which unduly add to the cost and weight of the system. In order ot overcome these problems, a VSCF power converter includes an inverter which utilizes

Prior VSCF inverters have utilized relatively expensive bipolar transistors and associated base drive circuits together with an input autotransformer which unduly add to the cost and weight of the system. In order ot overcome these problems, a VSCF power converter includes an inverter which utilizes less expensive power switches such as insulated gate bipolar transistors, MOS controlled thyristors or power FET\s, together with an output autotransformer coupled between the inverter output and a filter input which eliminates the need for the input autotransformer. The present system is less expensive and lighter than prior VSCF power converters.

대표청구항 ▼

A power converter for converting DC power supplied on a DC rail into AC power for an AC load, comprising: an inverter including first and second switches coupled to the DC rail; an autotransformer including first and second winding portions having first ends coupled to the first and second switches,

A power converter for converting DC power supplied on a DC rail into AC power for an AC load, comprising: an inverter including first and second switches coupled to the DC rail; an autotransformer including first and second winding portions having first ends coupled to the first and second switches, respectively, and second ends connected together at a common junction, the autotransformer further including a third winding portion having first and second ends coupled to the common junction and a particular DC potential, respectively; means for operating the inverter switches to convert the DC potential on the DC rail into AC power at the common junction; and means coupled between the common junction and the AC load for supplying the AC power to the AC load.