改进的SVPWM算法在煤矿APF中的应用研究  

Application on Improved SVPWM Algorithm for Mine APF

作　　者：赵广哲 孙晓鹏[2] 陈鹏飞 李慧敏 

机构地区：[1]河南大有能源股份有限公司供电分公司,河南义马472300 [2]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105

出　　处：《煤矿机电》2015年第4期49-53,共5页Colliery Mechanical & Electrical Technology

摘　　要：空间矢量脉宽调制(SVPWM)技术已应用到煤矿有源滤波器(APF)的控制策略中。煤矿供电网需要实时动态地补偿瞬态变化的谐波电流,而传统的基于煤矿APF的SVPWM控制算法由于复杂的三角函数计算和矢量扇区判断,对产生的补偿信号需要很大的计算量,导致动态补偿响应减慢。对此提出一种改进的基于dq坐标系的SVPWM电流控制算法,可优化空间矢量作用时间,无需复杂的三角函数计算和矢量扇区判断过程,减少了SVPWM算法的计算量,使APF更有效地抑制煤矿谐波电流。仿真和实验结果表明,该算法能更好地改善煤矿供电网的补偿效果。The SVPWM （ space vector pulse width modulation） technology has been applied to the control strategy of coal mine active power filter （APF）. For the needs of compensating harmonic current in the mine power grid real-time and dynamically, however, the conventional SVPWM control algorithm based APF has high computational burden due to complex trigonometric calculations and vector sector identification involved to generate the compensating signal, hence the response time for compensation is slow. So an improved SVPWM technique is presented based on dq coordinate system, optimizing space vector effective time, avoiding the complex trigonometric calculations and sector identification, reducing the computational effort, which makes APF suppress coal mine harmonic current more effectively. Simulation and experiment results demonstrated that the SVPWM algorithm can improve the compensation effect of the power grid of coal mine better.

关 键 词：有源滤波器(APF) 谐波电流 空间矢量脉宽调制(SVPWM) 扇区判断 空间矢量作用时间 

分 类 号：TN713.8[电子电信—电路与系统] TM761[电气工程—电力系统及自动化]