一种实现SVPWM调制效果的直接方法
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摘要
传统的SVPWM调制策略中,调制过程中需要进行矢量的计算且实现代码长,在实时性要求高的场合应用受到限制。研究了一种在三相PWM整流器下可直接实现SVPWM调制效果的数学优化方法,对PWM的约束条件和优化原理做了详细说明,优化时定义了判断区间新的组合函数和区间划分准则,在此基础上给出了调制公式。最后通过PSIM仿真软件进行仿真分析,仿真结果证明所述的优化调制算法是可行的,整个算法计算量减少、实现简单,代码长度约为常规SVPWM代码长度的1/6。
In the traditional SVPWM modulation strategy,complicated vector computation limits its application in some real-time system. A mathematical optimization method for implementing SVPWM was put forward in three phase PWM rectifier,the constraint conditions and optimization principle of PWM were explained in detail,new functions for section partitioning and partition rule were defined. Based on new section,modulation formula was provided. Compared with traditional SVPWM algorithm,the mathematical calculation was simplified,length of source codes was shortened greatly. The simulation based on the PSIM was carried out,through simulation and analysis,it is proved that the optimization modulation algorithm described is feasible.
In the traditional SVPWM modulation strategy,complicated vector computation limits its application in some real-time system. A mathematical optimization method for implementing SVPWM was put forward in three phase PWM rectifier,the constraint conditions and optimization principle of PWM were explained in detail,new functions for section partitioning and partition rule were defined. Based on new section,modulation formula was provided. Compared with traditional SVPWM algorithm,the mathematical calculation was simplified,length of source codes was shortened greatly. The simulation based on the PSIM was carried out,through simulation and analysis,it is proved that the optimization modulation algorithm described is feasible.
引文
[1]张崇巍. PWM整流器及其控制[M].北京:机械工业出版社,2003.
[2]曾允文.变频调速与SVPWM技术的原理、算法与应用[M].北京:机械工业出版社,2010.
[3]陆原,胡丙辉,张军伟,等.基于SVPWM调制的三段式算法研究[J].电力系统保护与控制,2016,44(6):68-75.
[4]吴丽华,高慧芝,刘政,等.一种改进型的SVPWM算法研究[J].电机与控制学报,2013,17(4):57-63.
[5]赵辉,胡仁杰. SVPWM的基本原理与应用仿真[J].电工技术学报,2015,30(14):350-353.
[6]吴德会,夏晓昊,张忠远,等.基于三相桥臂坐标的SVPWM过调制方法[J].电工技术学报,2015,30(1):150-158.
[7]丛耸,许春雨,陈晓鸥.一种有源滤波器SVPWM控制策略的优化算法[J].煤炭技术,2016,35(6):298-301.
[8]刘丙友,凌有铸,孟一博. SVPWM算法的关键技术研究及实现[J].计算机工程与应用,2014,50(2):222-225.
[9]齐昕,王冲,周晓敏,等.一种低硬件资源消耗快速SVPWM算法[J].电机与控制学报,2014,18(4):31-38.
[10]刘贺,姜建国,乔树通.一种应用于多电平SVPWM的过调制算法[J].电机与控制学报,2016,20(1):7-13.
[11]蔡志远,刘贵全,白保东,等.基于改进的SVPWM电机共模电压抑制[J].电力电子技术,2017,51(5):12-13,30.
[2]曾允文.变频调速与SVPWM技术的原理、算法与应用[M].北京:机械工业出版社,2010.
[3]陆原,胡丙辉,张军伟,等.基于SVPWM调制的三段式算法研究[J].电力系统保护与控制,2016,44(6):68-75.
[4]吴丽华,高慧芝,刘政,等.一种改进型的SVPWM算法研究[J].电机与控制学报,2013,17(4):57-63.
[5]赵辉,胡仁杰. SVPWM的基本原理与应用仿真[J].电工技术学报,2015,30(14):350-353.
[6]吴德会,夏晓昊,张忠远,等.基于三相桥臂坐标的SVPWM过调制方法[J].电工技术学报,2015,30(1):150-158.
[7]丛耸,许春雨,陈晓鸥.一种有源滤波器SVPWM控制策略的优化算法[J].煤炭技术,2016,35(6):298-301.
[8]刘丙友,凌有铸,孟一博. SVPWM算法的关键技术研究及实现[J].计算机工程与应用,2014,50(2):222-225.
[9]齐昕,王冲,周晓敏,等.一种低硬件资源消耗快速SVPWM算法[J].电机与控制学报,2014,18(4):31-38.
[10]刘贺,姜建国,乔树通.一种应用于多电平SVPWM的过调制算法[J].电机与控制学报,2016,20(1):7-13.
[11]蔡志远,刘贵全,白保东,等.基于改进的SVPWM电机共模电压抑制[J].电力电子技术,2017,51(5):12-13,30.