电力系统自动化2011，Vol.35Issue(17)：32-37,6.
一种新型耦合电感式双Boost光伏微逆变器拓扑分析
A Novel Topology Analysis of Photovoltaic Micro-inverters with Coupled Inductors and Double Boost
方宇 1马旭东2
作者信息
- 1. 复杂工程系统测量与控制教育部重点实验室,东南大学,江苏省南京市210096
- 2. 扬州大学信息工程学院,江苏省扬州市225009
- 折叠
摘要
Abstract
A topology of coupled inductor double boost inverter（CIDBI） is proposed based on the photovoltaic micro-inverter module system.The operation principle and control strategy of CIDBI are analyzed in detail and the gain expression from DC side to AC side is deduced.It can generate an AC output voltage much larger than the DC input one,depending on the proper setup of instantaneous duty cycle and turn ratio of the coupled inductors.Firstly,based on a given driving signal series,the operational principle of CIDBI is discussed.Secondly,the voltage stress of switches in CIDBI and the relationship between input and output are analyzed.The gain is approximately proportional to the duty cycle when the duty cycle is around 0.5 and the sinusoidal pulse width modulation（SPWM） is applicable to this novel inverter.Finally,the proposed CIDBI serves as a grid-connected inverter in a photovoltaic generation system.Experimental results show that the CIDBI can competently implement the single-stage grid-connected generation of photovoltaic system with a low level total harmonic distortion of current and high efficiency,without traditional transformer and DC/DC converter.关键词
耦合电感/Boost变换器/逆变器/光伏发电/并网Key words
coupled inductor/boost converter/inverter/photovoltaic generation/grid-connected分类
信息技术与安全科学引用本文复制引用
方宇,马旭东..一种新型耦合电感式双Boost光伏微逆变器拓扑分析[J].电力系统自动化,2011,35(17):32-37,6.
