초록 ▼

A power supply circuit for an ion engine suitable for a spacecraft has a voltage bus having input line and a return line. The power supply circuit includes a pulse width modulation circuit. A plurality of bridge inverter circuits is coupled to the bus and the pulse width modulation circuit. The puls

A power supply circuit for an ion engine suitable for a spacecraft has a voltage bus having input line and a return line. The power supply circuit includes a pulse width modulation circuit. A plurality of bridge inverter circuits is coupled to the bus and the pulse width modulation circuit. The pulse width modulation circuit generates operating signals having a variable duty cycle. Each bridge inverter has a primary winding and a secondary winding. Each secondary winding is coupled to a rectifier bridge. Each secondary winding is coupled in series with another of the plurality of rectifier bridges.

대표청구항 ▼

[ What is claimed is:] [1.] A power supply circuit comprising:a voltage bus having a input line and a return line;a pulse width modulation circuit having a plurality of independently controllable outputs for generating respective dependent entry controllable duty cycles;a plurality of power supply m

[ What is claimed is:] [1.] A power supply circuit comprising:a voltage bus having a input line and a return line;a pulse width modulation circuit having a plurality of independently controllable outputs for generating respective dependent entry controllable duty cycles;a plurality of power supply modules coupled to said bus and said pulse width modulation circuit, each module coupled to a respective one of said plurality of independently controllable outputs, each module having a primary winding and a secondary winding, each secondary winding coupled to a rectifier circuit, each rectifier circuit coupled in series, each primary winding having a voltage controlled by said pulse width modulation circuit,whereby said pulse width modulation circuit sequentially increasing a first duty cycle of a first one of said plurality of independently controllable outputs until a predetermined duty cycle is reached, thereafter increasing a second duty cycle of a second one of said plurality of independently controllable outputs until a predetermined voltage is obtained.