Analysis and Optimization of Variable-Frequency Soft-Switching Peak Current Mode Control Techniques for Microinverters

被引:37
作者
Tayebi, S. Milad [1 ]
Batarseh, Issa [1 ]
机构
[1] Univ Cent Florida, Dept Elect Engn & Comp Sci, Orlando, FL 32826 USA
基金
美国国家科学基金会;
关键词
Boundary conduction mode (BCM); microinverters; power loss analysis; soft switching; three-phase inverters; zero voltage switching (ZVS); zero current switching (ZCS); INVERTER; EFFICIENCY; COMPONENTS;
D O I
10.1109/TPEL.2017.2676097
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a detailed power loss model for a microinverter with three different zero voltage switching boundary conduction mode (BCM) current modulation methods. The model is used to calculate the optimum peak current boundaries for each modulation method. Based on the power loss model, a dual-zone modulation method is proposed to further improve the microinverter efficiency. The proposed modulation method provides two main benefits: the addition of one more soft switching transition and low inductor peak current. The additional soft switching transition reduces switching losses by means of zero current switching. The lower peak current boundary reduces inductor rms current and conduction losses as well as allowing the output filter inductor to be smaller and more efficient. An improved BCM peak current control method was proposed and implemented on a microinverter prototype. The control circuit provides a highly accurate representation of the filter inductor current waveform and also provides galvanic isolation that simplifies control circuit design. The experimental results on a 400-W three-phase half-bridge microinverter validate the theoretical analysis of the power loss distribution and demonstrate that further improvement in efficiency can be achieved by using the proposed dual-zone modulation method.
引用
收藏
页码:1644 / 1653
页数:10
相关论文
共 18 条
[1]   Three-Phase Soft-Switching Inverter With Minimum Components [J].
Amini, Mohammad Reza ;
Farzanehfard, Hosein .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2011, 58 (06) :2258-2264
[2]   Soft Switched AC-Link Direct-Connect Photovoltaic Inverter [J].
Amirabadi, Mahshid ;
Balakrishnan, Anand ;
Toliyat, Hamid A. ;
Alexander, William .
2008 IEEE INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY TECHNOLOGIES (ICSET), VOLS 1 AND 2, 2008, :116-+
[3]  
[Anonymous], 2003, P IEEE POW TECH C BO
[4]   Simplified Zero-Voltage-Transition Circuits Applied to Bidirectional Poles: Concept and Synthesis Methodology [J].
Beltrame, Rafael Concatto ;
Rakoski Zientarski, Jonatan Rafael ;
da Silva Martins, Mario Lucio ;
Pinheiro, Jose Renes ;
Hey, Helio Leaes .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2011, 26 (06) :1765-1776
[5]   High Reliability and Efficiency Single-Phase Transformerless Inverter for Grid-Connected Photovoltaic Systems [J].
Gu, Bin ;
Dominic, Jason ;
Lai, Jih-Sheng ;
Chen, Chien-Liang ;
LaBella, Thomas ;
Chen, Baifeng .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2013, 28 (05) :2235-2245
[6]  
Harb S, 2013, IEEE PHOT SPEC CONF, P2885, DOI 10.1109/PVSC.2013.6745072
[7]   A review of single-phase grid-connected inverters for photovoltaic modules [J].
Kjaer, SB ;
Pedersen, JK ;
Blaabjerg, F .
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2005, 41 (05) :1292-1306
[8]  
Levron Y., 2014, AUTOMATIC DESIGN IND
[9]   High Weighted Efficiency in Single-Phase Solar Inverters by a Variable-Frequency Peak Current Controller [J].
Levron, Yoash ;
Erickson, Robert W. .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2016, 31 (01) :248-257
[10]   A ZVS Grid-Connected Three-Phase Inverter [J].
Li, Rui ;
Ma, Zhiyuan ;
Xu, Dehong .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2012, 27 (08) :3595-3604