Single-Phase Grid-Connected Motor Drive System With DC-Link Shunt Compensator and Small DC-Link Capacitor

被引：33

作者：

Shin, Hojoon ^{[1
]}

Chae, Young-Ho ^{[1
]}

Son, Yeongrack ^{[1
]}

Ha, Jung-Ik ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Elect & Comp Engn, Seoul 08826, South Korea

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2017年 / 32卷 / 02期

关键词：

Electrolytic capacitor-less system; grid current shaping; motor drive system; small dc-link capacitor; POWER-DECOUPLING METHOD; 3-PHASE INVERTER; RECTIFIER; CONVERTER;

D O I：

10.1109/TPEL.2016.2540633

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：

The single-phase diode rectifier system with small dc-link capacitor shows wide diode conduction time and it improves the grid current harmonics. By shaping the output power, the system meets the grid current harmonics regulation without any power factor corrector or grid filter inductor. However, the system has torque ripple and suffers efficiency degradation due to the insufficient dc-link voltage. To solve this problem, this paper proposes the dc-link shunt compensator (DSC) for small dc-link capacitor systems. DSC is located on dc-node in parallel and operates as voltage source, improving the system performances. This circuit helps the grid current-shaping control during grid-connection time, and reduces the flux-weakening current by supplying the energy to the motor during grid-disconnection time. This paper presents a power control method and the design guideline of DSC. The feasibility of DSC is verified by simulation and experimental results.

引用

页码：1268 / 1278

页数：11

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