中国电机工程学报2012，Vol.32Issue(15)：31-39,9.
采用参数辨识及新型主动阻尼控制的LCL滤波脉宽调制整流器
PWM Rectifier With LCL Filter Based on Parameter Identification and a New Active Damping Control
摘要
Abstract
To control pulse width modulation （PWM） rectifier with LCL filter, not only grid voltages, currents and DC bus voltage, but also voltages or currents on capacitor branch should be detected in order to eliminate resonance. So many sensors cause high cost of the rectifier. And because the detected power grid voltage contains influence of the actual impedance of the grid, the stability of the rectifier is affected. In this paper, a control strategy based on parameter identification of power and virtual flux oriented was studied. To achieve accurate virtual flux observation, considering the particular complexity of the LCL filter, before starting the rectifier, Genetic Algorithms was used to identify grid inductance, frequency, amplitude and initial phase ang!e. And for resonance problem of the LCL filter, a new active damping control method was proposed, which gave directly feedbacks of high. frequency component of the current on rectifier side through a first-order high-pass filter. The frequency domain model was set to analyze the high-pass filter parameters on the resonant inhibiting effect. This strategy only detected the DC bus voltage and the rectifier side of the two-phase current, eliminating power grid voltage sensors and voltage or current sensors on capacitive branch. Finally, simulation and experimental results prove the effectiveness of the proposed control strategy.关键词
LCL滤波器/虚拟磁链/遗传算法/主动阻尼控制/一阶高通滤波器Key words
LCL filter/virtual flux/genetic algorithm/active damping control/first-order high-pass filter分类
信息技术与安全科学引用本文复制引用
王颖杰,伍小杰,戴鹏,朱荣伍..采用参数辨识及新型主动阻尼控制的LCL滤波脉宽调制整流器[J].中国电机工程学报,2012,32(15):31-39,9.基金项目
国家自然科学基金项目（51077124）：江苏省普通高校研究生科研创新计划 （）
福建省自然基金项目（2010J01352）：江苏省青蓝工程. （）
