Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2011.10a
- /
- Pages.685-692
- /
- 2011
Effects of the Irradiated Current Mode PWM Controller of DC/DC Power Converter
DC/DC 전력 컨버터의 전류모드 PWM 제어기의 방사선 영향
-
Lho, Young-Hwan
;
- Hwang, Eui-Sung ;
- Lho, Kyeoung-Su ;
- Phouphanonh, Phouphanonh ;
- Khamphoungeun, Khamphoungeun ;
- Han, Chang-Won
-
노영환
(우송대학교, 철도전기시스템학과)
;
- 황의성 (우송대학교, 철도전기시스템학과) ;
- 노경수 (우송대학교, 철도전기시스템학과) ;
- 푸파논 (우송대학교, 철도전기시스템학과) ;
- 캄푸는 (우송대학교, 철도전기시스템학과) ;
- 한창운 (전자부품연구원, 고장물리센터)
- Published : 2011.10.20
Abstract
DC/DC switching power converters produce DC output voltages from different DC input sources. The converters can be used in regenerative braking of DC motors to return energy back in the supply, resulting in energy savings for the systems containing frequent stops. The current mode DC/DC converter is composed of a PWM (pulse width modulation) controller, a MOSFET, and inductor, etc. Pulse width modulation is applied to control and regulate the total output voltage. It is shown that the variation of threshold voltage at MOSFET and the offset voltage increase caused by radiation effects make the PWM pulse unstable. In the PWM operation, the missing pulses, the changes in pulse width, and a change in the period of the output waveform are studied by simulation program with integrated circuit emphasis (SPICE) and experiments.
Keywords