摘要
依据不同的试验需求分析了调频式谐振特高压试验电源的谐振方式,并结合现代电力电子技术提出三种新型拓扑结构:①基于模拟器件。②基于PWM整流-H桥逆变。③基于不可控整流-H桥逆变。阐述了其工作原理,并重点研究了拓扑结构一的功率放大及过电流、击穿保护电路;同时针对拓扑结构二,提出了电源电压辨识的PWM整流器控制策略,以及在建立逆变器及特高压谐振电路数学模型的基础上提出以特高压谐振电容电压有效值为外环,以输出滤波器电容瞬时电流为内环的调幅、调频控制策略,其中针对内环被控量为正弦量,采用一种多模递推PID控制算法。仿真及实验结果验证了本文所提三种拓扑结构的正确性以及控制策略的有效性。
Firstly, this paper analyzes the different resonant forms of the UHV frequency tuned resonant test power supply （UHV-FTRTPS） by the requirement of different testing. Then this paper presents three novel topological structures of UHV-FTRTPS, which combine the present power electronic technology： ①Based on the analog devices. ②Based on the PWM rectifier and H bridge inverter. ③Based on the uncontrol rectifier and H bridge inverter. This paper also discusses all structures working principle, and then deeply study on the power amplification circuit, over-current circuit and breakdown circuit of topological structure one. In addition, for the topological structure two, the source voltage estimation is presented in the PWM rectifier controller. Meanwhile based on the mathematical model of the inverter and resonant circuit, this paper presents the double closed loop control strategy, which takes resonant capacitor voltage as outer loop and output filter capacitor current as inner loop. The controlled variable of inner loop is a sine quantity, so the multi-mode recursive PID is used for it. Simulation and test results show that the proposed topological structures are feasible and the control strategies are valid.
出处
《电工技术学报》
EI
CSCD
北大核心
2009年第7期125-133,156,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(60774043)
国家863计划(2004AA001032)
湖南省科技计划(2007TP4035)
湖南省研究生科研创新项目(湘财教指[2008]68号)资助项目
关键词
特高压交流试验电源
电压辨识
多模递推PID
拓扑结构
UHVAC-testing supply, voltage identification, multi-mode recursive PID, topological structure
