基于自然采样确定PWM逆变器脉冲沿的近似算法  

Approximate algorithm for determining pulse edge of PWM inverter based on natural sampling

作　　者：屈宝丽 QU Baoli(Xi’an Traffic Enginering Institute,Xi’an 710300,China)

机构地区：[1]西安交通工程学院,陕西西安710300

出　　处：《电子设计工程》2022年第14期10-14,共5页Electronic Design Engineering

摘　　要：为了确定功率变换器控制技术中脉宽调制的PWM逆变器脉冲沿,提出了一种近似算法,该算法无需迭代即可实现任意精度的自然采样。其基本思想是将调制信号脉冲沿的角度表示为调幅指数的多项式,多项式算法采样的几何解释与自然算法的几何解释是一致的,但超越方程的解定义了调制信号的脉冲沿,即求一个多项式的值,该多项式的系数是通过一个精确的过程预先确定的。这种方法提供了利用低成本微处理器平台实现多项式采样方法的可能性,具有广泛的应用价值。In order to determine the pulse edge of PWM inverter in power converter control technology,an approximate algorithm is proposed,which can realize natural sampling with arbitrary precision without iteration.The basic idea is to pulse modulation signal expressed as a polynomial of amplitude modulation index along the point of view,a polynomial algorithm of sampling algorithm is the geometric interpretation of geometric interpretation and nature is consistent,but the solution of transcendental equation defines the pulse modulation signal along,namely for the value of a polynomial,the polynomial coefficient is predetermined by a precise process.This method provides the possibility of using low⁃cost microprocessor platform to realize polynomial sampling method and has a wide range of application value.

关 键 词：自然采样 逆变器 调制脉冲 近似算法 调幅指数 

分 类 号：TN0[电子电信—物理电子学]