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330MW火电机组高加顺控系统的改进
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作者 黄金喜 《内蒙古电力技术》 2006年第6期28-29,共2页
分析了达拉特发电厂330MW机组高加顺控系统存在的问题,介绍了改造的措施。改造后,提高了机组的安全经济性能。
关键词 高加SCS 高温辐射 开关移位 组态修改
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SOFT SWITCHED SYNCHRONOUS RECTIFIER WITH PHASE-SHIFTED FULL BRIDGE CONVERTER AND ITS SMALL-SIGNAL ANALYSIS
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作者 潘三博 潘俊民 万健如 《Transactions of Tianjin University》 EI CAS 2006年第1期6-12,共7页
By using the output inductors and body capacitances without adding any component compared with hard switching synchronous rectifier,the topology of a soft switched synchronous rectifier with phase-shifted full bridge ... By using the output inductors and body capacitances without adding any component compared with hard switching synchronous rectifier,the topology of a soft switched synchronous rectifier with phase-shifted full bridge zero voltage switching DC/DC converter is proposed. The converter efficiency is maximized due to soft switching of the full bridge MOSFETs and the synchronous MOSFETs, and also the low conduction loss of synchronous MOSFET. The operation principles of the circuit are analyzed in detail and the small-signal model is derived, also the converter dynamic characteristics are analyzed. Frequency responses of transfer functions under different values of transformer primary leakage inductance are discussed. The experimental results were obtained from a 400 V input and 100 A/12 V output DC/DC converter operating at 100 kHz. The results show that the converter efficiency is 2% higher in rated power than traditional diode rectifier. 展开更多
关键词 phase-shifted full bridge zero voltage switch synchronous rectifier DC/DC small signal
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