摘要
特定谐波消除脉宽调制(SHEPWM)技术,通过计算最优的开关角度,在保证期望基波电压输出的同时有效消除选定的低次谐波,具有开关频率低、波形质量高等一系列优点。为了提高SHEPWM非线性方程组的求解可靠性和快速性,提出了将粒子群优化算法(PSO)与牛顿迭代法相结合的随机牛顿法(SNM),通过Matlab编程求解SHEPWM非线性方程组验证了SNM求解的可靠性和快速性。最后通过搭建单相7电平级联H桥逆变器和三相D型接线11电平级联H桥逆变器仿真实验系统,验证了SNM求解的开关角度能够实现基波控制目标并有效消除选定的低次谐波。
The technology of selected harmonic elimination pulse width modulation（SHEPWM） can be used to eliminate the selected low-order harmonics and satisfy the demand of desired fundamental voltage by calculating the optimal switching angles, this method has a series advantages such as low switching frequency and high-quality waveforms, etc.In order to improve the reliability and rapidity of calculating for the SHEPWM non-linear equations, this paper presents the stochastic Newton method（SNM） which is composed of the particle swarm optimization（PSO） and the Newton method, the reliability and rapidity of the SNM is verified by a program for SHEPWM non-linear equations.In the end, the simulation experimental systems of seven-level single-phase cascade inverter and eleven-level three-phase D connected cascaded inverter are designed and tested that the selected low-order harmonics are eliminated by the switching angles calculated by the SNM and the fundamental voltage is produced.
作者
刘闯
田孝铜
曹亚华
刘海军
王志凯
LIU Chuang TIAN Xiaotong CAO Yahua LIU Haijun WANG Zhikai(School of Electrical Engineering, Northeast Dianli University, Jilin 132012, China State Grid Shandong Electric Power Company Electricity Maintenance Company, Jinan 250000, China Global Energy Interconnection Research Institute, Beijing 102209, China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2017年第5期96-102,共7页
Power System Protection and Control
基金
国家自然科学青年基金资助项目(51307021)
吉林省自然科学基金面上项目(20140101076JC)~~
