电器与能效管理技术Issue(5)：50-54,66,6.DOI:10.16628/j.cnki.2095-8188.2017.05.010
基于双Buck逆变电路的微型逆变器研究与设计
Research and Design of a Dual Paralleled Buck Inverting Circuit Based Micro-Inverter
摘要
Abstract
This paper researched a dual paralleled buck inverting circuit based micro-inverter and its control strategy,where a DC/DC converter,serving as the front-end part,is employed to boost the voltage of the PV panel input and to implement MPPT control;where a dual paralleled buck inverting circuit,serving as the back-end part,is employed to realize the sinusoidal grid current control with unity power factor and to stabilize the DC bus voltage.Because of the nonexistence of the bridge shoot through risk,dead times in the drive signals are unnecessary in dual paralleled buck inverting circuit.The MOSFET built-in body diode is inactive,which optimizes the selection of switches and diodes.Since no common mode current will be introduced,tranformerless design is acceptable.Small value capacitance is achieved for DC bus capacitor,so that bulky electrolytic capacitors can be replaced by film capacitors.The circuit topology and control strategy researched were validated by the simulation results.关键词
微型逆变器/并网逆变器/双Buck逆变器/桥臂直通/无变压器设计Key words
micro-inverter/grid-tied inverter/dual buck inverter/bridge shoot through/transformerless design分类
信息技术与安全科学引用本文复制引用
徐新蔚,汪飞,吴春华,冯夏云..基于双Buck逆变电路的微型逆变器研究与设计[J].电器与能效管理技术,2017,(5):50-54,66,6.基金项目
国家自然科学基金项目(51577113) （51577113）
