摘要
分析了以瞬时无功功率理论为基础的传统的ip-iq谐波电流检测方法,提出了一种改进型ip-iq谐波电流检测方法。该方法预设变换矩阵的频率代替锁相环(PLL),采用Chebyshev型陷波滤波器和Bessel型滤波器串联来构成低通滤波器部分。与传统的ip-iq谐波电流检测方法相比,该方法不仅能够保证较高的检测精度,而且电路结构更为简单,响应速度更快。理论分析及MATLAB仿真结果均验证了该改进设计的正确性和有效性。
This paper analyzes the traditional ip-iq harmonic current detection method based on instantaneous reactive power theory and proposes an improved method, that is, presetting the frequency ω in the transformation matrix is to replace phase lock loop （PLL） , and using serial Chebyshev band-block filter and Bessel filter to construct a new low pass filter. Compared with conventional ip-iq method, the proposed method has faster dynamic response and simpler circuit structure without reducing the detection accuracy. The theoretical analysis and simulation results based on MATLAB confirm the correctness and validity of the improved method.
出处
《电子技术（上海）》
2012年第3期63-65,共3页
Electronic Technology
关键词
瞬时无功功率理论
谐波电流检测
IP-IQ法
陷波滤波器
instantaneous reactive power theory
harmonic current detection
ip-iq method
band-block filter
