电力系统保护与控制2011，Vol.39Issue(17)：74-79,86,7.
电压频率偏移条件下新型锁相环在三相电压型PWM整流器中的应用
The application of the novel phase-locked loop in three-phase voltage source PWM rectifier under frequency offset of voltage
摘要
Abstract
Aiming at the problems that classic phase-locked loop (PLL) has low response speed and detection accuracy under frequency offset of network voltage conditions, a novel analog signal PLL based on coordinate transformation is proposed, and based on the PLL, the model of three-phase voltage source pulse width modulation (PWM) rectifier is built. The rectifier adopts the modulation method of space vector pulse width modulation(SVPWM). According to the circuit topology of the PWM rectifier, the framework of control strategy is given. Also the circuit topology and working principle of PLL are analyzed. Finally, a simulation is done through the Matlab. Simulation results show that the PLL can track the network frequency so well that it can realize phase locking. And the novel PLL can also achieve phase locking under the condition of frequency drift of three-phase network voltage.关键词
PWM整流器/频率偏移/坐标变换/锁相环/静止坐标系Key words
PWM rectifier/ frequency offset/ coordinate transformation/ phase locked loop (PLL)/ stationary frame分类
信息技术与安全科学引用本文复制引用
侯世英,张诣..电压频率偏移条件下新型锁相环在三相电压型PWM整流器中的应用[J].电力系统保护与控制,2011,39(17):74-79,86,7.基金项目
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709304) （2007DA10512709304）
