ABSTRACT

Voltage source inverters are the most preferred in a variety of medium and high power applications. The control of inverter output voltage gives desirable outputs in drives and many applications. Pulse width modulation (PWM) techniques strongly influence the inverter output. Space vector pulse width modulation (SVPWM) technique is one among the prominent techniques used for inverter switching control. This paper is devoted to the review of variety of control strategies on SVPWM evolved over the past 20 years and its thrust on the output voltage of inverter and current with the description of the various sequences and its behaviour for both two-level and three-level inverter for an induction motor drive. The various PWM control strategies based on Space vector PWM are categorized as follows: Bus Clamping PWM, Advanced Bus Clamping PWM, and Hybrid PWM. The merits and demerits of each SVPWM techniques are presented by analysing the experimental results from the literature. SVPWM can also be achieved by triangular comparison approach other than space vector approach which is meritorious in some aspects like lower computation and memory requirements. This paper also deals with the review of space space vector PWM on triangular comparison approach which is termed as carrier-based SVPWM.

摘要

电压源逆变器是各种中高功率应用的首选。逆变器输出电压的控制在驱动器和许多应用中提供了理想的输出。脉宽调制 (PWM) 技术对逆变器输出有很大影响。空间矢量脉冲宽度调制 (SVPWM) 技术是用于逆变器开关控制的主要技术之一。本文致力于回顾过去 20 年来 SVPWM 发展起来的各种控制策略及其对逆变器输出电压和电流的影响，并描述了各种序列及其在两电平和三电平下的行为用于感应电机驱动的逆变器。基于空间矢量 PWM 的各种 PWM 控制策略分类如下：总线钳位 PWM、高级总线钳位 PWM、和混合 PWM。通过分析文献中的实验结果，介绍了每种 SVPWM 技术的优缺点。SVPWM 也可以通过三角比较方法而不是空间矢量方法来实现，这在某些方面是可取的，例如较低的计算和内存要求。本文还回顾了基于三角比较方法的空间空间矢量 PWM，该方法称为基于载波的 SVPWM。