切比雪夫滤波器在动力蓄电池组检测中的应用.pdfVIP

2008 年 3 月 电 工 技 术 学 报 Vol.23 No.3 第 23 卷第 3 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Mar. 2008 切比雪夫滤波器在动力蓄电池组 检测中的应用 张丽霞 李和明 颜湘武 康 伟 张 波 （华北电力大学电气与电子工程学院 保定 071003 ） 摘要 为了实现准确的动力蓄电池组综合性能测试，充放电电流纹波小（0.5 ％以下）是该测 试系统一项基本要求。由于动力蓄电池组具有电压高、电流大、内阻极小, 本身具有反电动势等 特殊性，给滤波器的设计带来困难。动力蓄电池组属于低内阻的特殊性负载，其滤波器设计属于 非匹配型滤波器设计，为了最大限度地减少非匹配型低通滤波器对直流电压固有的衰减，本文论 述了动力蓄电池组综合性能测试系统的变流环节滤波器类型选取原则；并采用单端接载的综合设 计方法计算滤波器的主要参数，以简化滤波器的设计；仿真及试验验证了该方法的可行性。 关键词：电池检测 切比雪夫滤波器 单端接载网络 双向滤波器 中图分类号：TN713 Application of Chebyshev Filter for the Power Accumulator Battery Testing System Zhang Lixia Li Heming Yan Xiangwu Kang Wei Zhang Bo （North China Electric Power University Baoding 071003 China ） Abstract In order to get accurate parameter of the power accumulator battery, low charge/discharge current ripple ( ≤0.5%) is a basic requirement of the test system. The power accumulator battery has tinny inner resistance and opposing electromotive force, little charge/discharge voltage fluctuation will cause large current ripple. It makes the filter design very difficult. Because the cell test system is a non-matched network, there is a flat decay to the DC voltage which can’t be avoided. To reduce the decay furthest, this paper discussed how to choose the type of the filters and calculated the main parameter by using single-end network. It predigests the design of the filter and reduced the test current ripple. Simulations and tests proved that the filter design method based on the Chebyshev algorithm is feasible. Ke