[특허]Full shunt boost switching voltage limiter for solar panel array

Full shunt boost switching voltage limiter for solar panel array 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05F-001/44
출원번호	US-0157552 (1993-11-26)
발명자 / 주소	Ashley Christopher R. (Redondo Beach CA)
출원인 / 주소	Hughes Aircraft Company (Los Angeles CA 02)
인용정보	피인용 횟수 : 72 인용 특허 : 0

초록 ▼

According to the present invention a bus voltage limiter is connected between a photovoltaic solar panel array and a load to limit the output voltage to a fixed dc reference voltage. The limiter includes a pulse width modulator which controls the duty cycle of a power switch from 0% to 100% to maintain a substantially constant output voltage Vref. A coupled inductor type boost DC to DC converter includes a pair of main windings which cooperate with the duty cycle modulated power switch to provide the output voltage. An auxiliary winding provides input ripple current cancellation in conjunction with a second inductor and a dc blocking capacitor.

대표청구항 ▼

A bus voltage limiter adapted to be connected between a load and a spacecraft power source, which power source is comprised of an array of solar panels providing a substantially constant current and a variable voltage, said limiter comprising: power switch means connected with said power source, a coupled inductor having first and second windings, each winding having first and second ends, an output capacitor connected across said load and to said first end of said first and second windings, an energy transfer capacitor connected to said second end of said first and second windings, said power switch means adapted to connect said second end of said first winding to said source, a diode connecting said second end of said second winding to said source, modulator means for decreasing the duty cycle of said switch means in response to increases in load current and for increasing the duty cycle of said switch means in response to decreases in load current, to maintain a substantially constant output voltage at said load.

이 특허를 인용한 특허 (72)

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Full shunt boost switching voltage limiter for solar panel array 원문보기

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