摘要
有源滤波器能够实现良好滤波效果的关键在于可以准确实时地补偿谐波电流,这一点在很大程度上主要依赖于电流检测算法。文中在滑窗迭代离散时间傅立叶变换(DFT)算法的基础上,提出了基于自适应有限脉冲响应(FIR)预测算法和滑窗迭代离散时间傅立叶变换(DFT)算法相结合的电流检测算法,进行了Matlab的仿真实验,从采样时间离散程度、电网滤波效果以及系统稳定性等方面与基于滑窗迭代的离散时间傅立叶变换(DFT)算法相比较,验证了新算法的可行性与有效性。
Accurate real time compensation of harmonic current is the key point that active power filter can achieve a good filtering effect, it mainly depends on current detecting algorithm. Based on the algorithm of sliding window iterative discrete fourier transform（DFT）, a algorithm including adaptive finite impulse response（FIR） prediction and sliding：window iterative DFT is presented. With this algorithm, Matlab simulation experiment is carried out , and compared with the algorithm of sliding window iterative DFT in dispersion degree of sampling time, harmonic elimination and system stability, the experiment result verifies the feasibility and effectiveness of the new algorithm.
出处
《通信电源技术》
2010年第2期35-38,共4页
Telecom Power Technology
关键词
有源滤波器
电流检测
自适应预测
滑窗迭代
active power filter
current detecting
adaptive prediction
sliding-window iteration
