전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2003년도 춘계전력전자학술대회 논문집(2)
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- Pages.565-568
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- 2003
대용량 전력변환용 사이리스터 디지털 점호제어
Digital firing control for high power thyristor converter
초록
The conventional analog-based firing circuit can be implemented by comparing a linearly decreasing periodic sawtooth waveform synchronized to the ac line, with a voltage corresponding to the desired converter delay angle. This circuit requires a large number of components (resistance and capacitor) and careful adjustment of the synchronization circuity In this paper a novel firing circuit is proposed for thyristor switch is elements. The proposed circuit is implemented on the basis of the analog cosine method using FPGA and microprocessor.
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