电工技术学报2018，Vol.33Issue(8)：1783-1792,10.DOI:10.19595/j.cnki.1000-6753.tces.161912
带低频纹波抑制的单级充放电高频环节DC-AC变换器
Single-Stage Charging/Discharging High-Frequency Link DC-AC Converter with Low-Frequency Harmonic Suppression
摘要
Abstract
In this paper, a single-stage charging/discharging high-frequency (HF) link DC-AC converter with low-frequency (LF) harmonic suppression was proposed. In addition, the crucial techniques were investigated and analyzed in detail, such as the circuit topology, analogous-rectifying unipolar phase-shifted control strategy with constant charging/discharging current, steady-state principles and input second harmonic current suppression. The important conclusions were obtained. The circuit topology is composed of an input second harmonic current suppression circuit and a cascaded single-stage charging/discharging HF link DC-AC converter. The control strategy rectifies the sinusoidal pulse width and position modulation (SPWPM) waves of HF transformer to output positive/negative half cycle sinusoidal pulse width modulation (SPWM) waves through the bi-directional rectification circuit, while realizing constant charging/discharging current of the battery. The input second harmonic current suppression circuit is an LrCrparallel-resonant circuit, which is connected in series between the battery and input filter capacitor. Experimental results of the designed prototype show that the proposed converter has the advantages of HF isolation, single-stage bi-directional charge/discharge, high conversion efficiency and small ripple of input current.关键词
蓄电池充放电/单级/DC-AC/变换/高频环节/低频纹波抑制/类整流单极性移相控制Key words
Battery charge/discharge/single-stage DC-AC converter/high-frequency link/low-frequency harmonic suppression/analogous-rectifying unipolar phase-shifted control分类
信息技术与安全科学引用本文复制引用
曾汉超,许俊阳,陈道炼..带低频纹波抑制的单级充放电高频环节DC-AC变换器[J].电工技术学报,2018,33(8):1783-1792,10.基金项目
国家自然科学基金重点项目资助(51537001). （51537001）
