Parallel Operation of Two Single-Phase Rectifiers with Three-Phase Inverter by Implementing Generalized SVPWM

Volume 6 Issue 2 May - July 2018

Research Paper

Parallel Operation of Two Single-Phase Rectifiers with Three-Phase Inverter by Implementing Generalized SVPWM

Srinivas Singirikonda*, Geetha Chapal**

* Assistant Professor, Department of Electrical and Electronics Engineering, TKRCET, JNTUH, Hyderabad, India.

** M.Tech Scholar, Department of Electrical and Electronics Engineering, TKRCET, JNTUH, Hyderabad, India.

Singirikonda, S., and Chapal, G. (2018). Parallel Operation of Two Single-Phase Rectifiers with Three-Phase Inverter by Implementing Generalized SVPWM. i-manager’s Journal on Power Systems Engineering, 6(2), 28-36.https://doi.org/10.26634/jps.6.2.15060

Abstract

In this paper, a parallel five-leg (P5L) operation of two single-phase rectifiers with three-phase inverter by implementing generalized Space Vector Pulse Width Modulation (SVPWM) is proposed, consisting of two parallel 1-phase half-bridge rectifiers with shared leg. This configuration facilitates the continuity of power flow among the switches though if one switch fails to operate, and reduces the power losses at both rectifier and inverter circuits. The proposed topology is evaluated by connecting 3-phase Induction Motor (IM), which is controlled by SVPWM. The SVPWM is a generalized modulation of PWM derived from Sinusoidal Pulse Width Modulation (SPWM) combination of common-mode voltage. It facilitates the outcomes of the conventional SVPWM with the generalized SVPWM. This power conversion is attained by maintaining the DC-link voltage by using capacitors. This strategy facilitates the balancing of current and voltage at the DC-link. A comparative analysis of machine characteristics with SPWM and SVPWM topology is done. The MATLAB simulation results are analyzed and represented.