继电保护测试仪用30V/100A宽变频电流功放的研制  

Development of 30V/100A wide-variable-frequency current power amplifier in relay protection testing apparatus

作　　者：吴昊[1] 管松敏[1] 陈乾宏[1] 钱海[1] 

机构地区：[1]南京航空航天大学航空电源重点实验室,江苏南京210016

出　　处：《电工电能新技术》2011年第4期35-39,73,共6页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金(51077069);江苏省自然科学基金(BK2009372)

摘　　要：功率放大电路是继电保护测试仪系统中的核心部分,与普通逆变器相比,需要在较大的输出频率范围内,保证较高输出精度,同时要求更高的功率密度。本文针对30V/100A电流功放,围绕设计难点给出一种系统设计思路,设计了系统框架;同时着重利用建立并求解增益函数方程组的方法,设计了DC/AC部分交流输出滤波器的相关参数。最后给出DC/DC和DC/AC两部分实验结果,证明了系统框架的有效性,以及交流输出滤波器参数求解方法的可行性。Power amplifier is an important part of the relay protection testing apparatus. Compared with convention- al inverters, it requires high output precision and high power density while its frequency can vary widely. Consider- ing the system performance and application, a system design method of 30V/100A current power amplifier is given in this paper. Then, by setting and solving the gain function equations, the parameters of inverter output filter is designed. Finally, experimental results of each part show that the system design and the parameters design method of inverter output filter are feasible.

关 键 词：宽变频 电流功放 交流输出滤波器 

分 类 号：TM464[电气工程—电器]