摘要
采用特定消谐波控制技术(SHET)的变频电源具有很好的滤波效果,但其非线性超越方程组求解困难,限制了该技术的应用。利用cos(nα)快速展开的规律,对SHET方程组进行了简化,利用梯度法对方程组进行了牛顿迭代求解。通过求解找到了符合精度要求的开关角值,硬件电路输出结果验证了求解过程的正确性。
The inverter based on SHET has very good filtering effect,but the application of SHET is limited by the difficulty in the solution of SHET nonlinear equation.The SHET nonlinear equation was simplified based on the law of rapid expansion of cos（nα） and it was solved by the gradient method of Newton iterative algorithm.The accurate value of switching angle was found in this paper and the output of hardware circuit verified that the solution of SHET nonlinear equation is right.
出处
《电源技术》
CAS
CSCD
北大核心
2012年第11期1700-1702,共3页
Chinese Journal of Power Sources
基金
国家自然科学基金(50766002)
内蒙古自然科学基金(ZD201009)资助
关键词
变频电源
特定消协波
非线性方程组
开关角
inverter
selective harmonic elimination technique
non-liner equation set-up
switching angle
