PDF《龚氏半桥和全桥双向调节原理》

第1期收稿日期:2016鄄01鄄22;

修回日期:2017鄄12鄄25 补偿式交流稳压电源的斩波补偿电压调节需 要双向调节,双向调压方式有两种:一种是由 AC/ DC 到DC/AC 斩波变换调压,通过斩波信号实现双 向调压, 另一种是只需要一次 AC/AC 斩波变换调 压.

由于现有交流斩波电路不能通过斩波信号实现 双向调压,并且斩波电路成本高,如何降低成本以 及交流斩波双向调压新电路的发明及其调节原理, 成为 AC/AC 交流斩波调压交流稳压电源研究的难 点和热点问题. 教科书上交流斩波调压电路是只能调节输出 交流电压的单向调压电路,其主控电子开关和续流 电子开关都是用二极管和三极管组成的全控双向 电子开关,由于大功率全控器件(IGBT 等)构成的 DOI:10.13234/j.issn.2095-2805.2018.1.75 中图分类号:TM 文献标志码:A 龚氏半桥和全桥双向调节原理 龚秋声 (江西洪都航空工业集团老科协 ,南昌 330024) 摘要:直流斩波变换领城中的半桥和全桥逆变电路和调节原理是 DC/AC 变换中最为广泛的基础电路和调 节原理,交流斩波变换领域中也有与它们相对应的龚氏半桥和全桥变换电路和调节原理,龚氏半桥双向调是原 理是

1 个交流斩波调压电路的输出交流电压与倒相自耦变压器绕组中间抽头上的交流电压进行比较, 实现交 流电压正反双向调节电压的调节原理. 龚氏全桥双向调节原理是

2 个交流斩波调压电路的输出交流电压进行 比较,实现正反双向调节输出电压的原理. 它们是从众多交流斩波双向调压电路发明中提炼出来的新原理,是 交流电压实现双向调节电压的基础,它们包含有多种 AC/AC 斩波变换双向调节的新电路,在交流斩波双向调 压中可节省 4~12 个倒相双向电子开关,使双向调压电路简化成本降低. 关键词:AC/AC 变换;

半桥斩波;

全桥斩波;

双向调节;

交流稳压 Bidirectional Regulation Principle of Gong's Half鄄bridge and Full鄄bridge Circuits GONG Qiusheng (Scientific & Technological Association for Senior Citizens, Jiangxi Hongdu Aviation Industry Group, Nanchang 330024, China) Abstract: The half鄄bridge and full鄄bridge inversion circuit and regulation principles applied to DC chopping con鄄version field are the most comprehensive basic circuits and regulation principles that can be applied to DC/AC conver鄄sion. Similarly, the corresponding Gong's half鄄bridge and full鄄bridge conversion circuits and regulation principles also exist in the AC chopping conversion field. In the principle of Gong's half鄄bridge bidirectional regulation, the AC output voltage of an AC chopping voltage鄄regulation circuit is compared with the AC voltage across the center tap of a phase鄄inversion autotransformer's winding to realize a forward鄄reverse bidirectional regulation of the AC voltage. In the princi鄄ple of Gong's full鄄bridge bidirectional regulation, the two AC output voltages from two AC chopping voltage鄄regulation circuits are compared to realize a forward鄄reverse bidirectional regulation of the output voltage. These new principles are extracted from numerous AC chopping bidirectional voltage鄄regulation circuits, which are foundations for realizing a bidirectional voltage鄄regulation and contain various new bidirectional regulation circuits of AC/AC chopping conversion. Therefore, 4~12 bidirectional phase鄄inversion electronic switches can be saved in the AC chopping bidirectional voltage鄄regulation, which simplifies the bidirectional voltage鄄regulation circuits and reduces their cost. Keywords: AC/AC conversion;