Investigation of TTMC-SVPWM Strategies for Diode Clamped and Cascaded H-bridge Multi-level Inverter Fed Induction Motor Drive

Ravikumar Bhukya,P Satish Kumar

doi:10.11591/ijeei.v5i3.305

Abstract

This paper presents a concept of two types multilevel inverters such as diode clamped and cascaded H-bridge for harmonic reduction on high power applications. Normally, multilevel inverters can be used to reduce the harmonic problems in electrical distribution systems. This paer focused on the performance and analysis of a three phase seven level inverter including diode clamped and cascaded H-bridge based on new tripizodal triangular space vector PWM technique approaches. TTMC based modified Space vector Pulse width modulation technique so called tripizodal triangular Space vector Pulse width modulation (TTMC-SVPWM) technique. In this paper the reference sine wave generated as in case of conventional off set injected SVPWM technique. It is observed that the TTMC-Space vector pulse width modulation ensures excellent, close to optimized pulse distribution results and THD is compared to seven level, diode clamped and cascaded multi level inverters. Theoretical investigations were confirmed by the digital simulations using MATLAB/SIMULINK software.

Highlights

In the region of high voltage and power, a high quality inverter fed ac drive is more obtained by the use of multi-level and in the first turn of three-level - inverters
Within the group of time domain, the phase-shift modulation (PSPWM) is the most known, having a triangular carrier and a sinusoidal modulator for each phase, which both are compared and determine how each leg to operate and is widely used in inverters for its simplicity [7,8]. This paer focused on the performance and analysis of a three phase seven level inverter including diode clamped and cascaded H-bridge based on new tripizodal triangular space vector pulse width modulation (PWM) technique approaches
A novel trapezoidal triangular carrier has developed by adding triangular off set to sinusoidal fundamental waveform so as to shift the lower order harmonics to higher order side. This novel carrier is compared with the offset injected space vector reference waveform to generate the required PWM pulses to the inverter

Summary

Introduction

In the region of high voltage and power, a high quality inverter fed ac drive is more obtained by the use of multi-level and in the first turn of three-level - inverters. This paer focused on the performance and analysis of a three phase seven level inverter including diode clamped and cascaded H-bridge based on new tripizodal triangular space vector PWM technique approaches. 2. Three-Phase Seven-level Diode Clamped and Cascaded Multi-level Inverter The structure of a multilevel converter based on series of inverters three phase H-

Results

Conclusion