RESEARCH AND DESIGN OF GRID-CONNECTED INVERTER IN PHOTOVOLTAIC SYSTEM WITH SVPWM TECHNIQUE

Nguyen Duc Minh Nguyen Duc Minh,Bui Van Huy,Ngo Thi Quan Ngo Thi Quan,Trinh Trong Chuong,Nguyen Quang Ninh

doi:10.29121/ijetmr.v6.i11.2019.460

Abstract

This paper presents the design and simulation of three phase grid-connected inverter for photovoltaic systems with power ratings up to 5 kW. In this research, the application of Space Vector Pulse Width Modulation (SVPWM) technique for inverter is explored. With the use of SVPWM inverter, synchronization between the inverter and electrical grid follows the Phaselocked Loop (PLL) algorithm. The proposed design is simulated and validated by experimental results.

Highlights

The proportion of renewable energy resources, especially solar power energy, in total electricity generation is growing rapidly across many countries
This paper considered the application of Space Vector Pulse Width Modulation (SVPWM) controlling method to construct the voltage and amplifier specifications of SVPWM inverter
This paper proposed a framework design for three-phase grid-connected inverter using SVPWM technique

Summary

Introduction

The proportion of renewable energy resources, especially solar power energy, in total electricity generation is growing rapidly across many countries. Photovoltaic (PV), the mainstream solar power technology globally, generates direct current (DC) electricity To convert this DC power to alternative current (AC) electricity, PV systems utilize a component called the inverter [1]. Pulse Width Modulation (PWM) is one of the key controlling techniques in power electronics field This technology is widely used in industrial applications that require high efficiency. SPWM is the very simple and commonly used controlling strategy in analogue circuit It has some disadvantages such as high total harmonic distortion (THD), low switching frequency, and attenuation of the wanted fundamental component of the waveform. SPWM technique is compatible with both digital and analogue systems with applicable DC voltage of 0,5VDC As a result, another controlling method should be utilized to accommodate the DC busbar. After discussing theories and research methods, the paper will simulate the algorithm to evaluate the practical applications

Space Vector Pulse Width Modulation Algorithm

Results and Discussions

Key Modules in Matlab Simulation

Conclusions