Phase Synchronous Inverter for Microgrid System

2016 International Conference on Computer and Communication Engineering (ICCCE) Pub Date : 2016-07-01 DOI:10.1109/ICCCE.2016.45

T. Rahman, S. Motakabber, M. Ibrahimy

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引用次数: 7

Abstract

The synchronous inverter is an electrical inverter device which is synchronizing inverter phase into the micro-grid phase at the same amplitude and frequency. A three phase phase synchronous inverter (PSI) is basically used in the high efficiency power supply systems. The inverter phase is depend on the controllers which are two level pulse width modulation (PWM) generator, phase lock loop (PLL) regulator, DC voltage regulator current regulator and Uref generator to get the reference input and output voltage and current for synchronizing the phase angle. An inverter using a three leg IGBT has been designed for microgrid systems and simulated by using MATLAB2014a. The input and output lowpass LC filters are used to synchronize the micro-grid phase. The controllers have generated PWM signal and a zero crossing sampling is used to precisely synchronize with microgrid line frequency. A balanced microgrid load of star configuration (00, 1200 and -1200 degree), and also the input DC voltage ± 250V are considered in this design. The overall conversion efficiency of the PSI is 97.62% and phase synchronization error for each phase is about 0.50, 1540 and 2650 degrees. The results show that the design has better performance and can be used efficiently in the micro-grid system.

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微电网系统相同步逆变器

同步逆变器是一种将逆变器相位同步到微电网中以相同幅度和频率的逆变器装置。三相同步逆变器(PSI)是高效供电系统中基本采用的一种逆变器。逆变器相位依靠两电平脉宽调制(PWM)发生器、锁相环(PLL)稳压器、直流稳压器、电流稳压器和Uref发生器等控制器得到参考输入输出电压和电流，实现相角同步。设计了一种基于三支路IGBT的微电网逆变器，并利用MATLAB2014a软件进行了仿真。输入和输出低通LC滤波器用于同步微电网相位。控制器产生PWM信号，并采用过零采样与微电网线频精确同步。本设计考虑了星型配置(00度、1200度和-1200度)微网负载的平衡，以及输入直流电压±250V。PSI的整体转换效率为97.62%，各相的相位同步误差分别为0.50、1540和2650度。结果表明，该设计具有较好的性能，可以有效地应用于微电网系统中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 International Conference on Computer and Communication Engineering (ICCCE)

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