电气传动2024，Vol.54Issue(12)：33-39,46,8.DOI:10.19457/j.1001-2095.dqcd26138
基于无功电流补偿的Vienna整流器双极性直流母线电压平衡策略
Bipolar DC-link Voltage Balancing Strategy Based on Reactive Current Compensation for Vienna Rectifier
摘要
Abstract
When the Vienna rectifier is connected to unbalanced loads operating under light load conditions,the slight power difference causes unbalanced voltage of bipolar DC bus,which increases the voltage stress on the switching device and DC-link capacitance.To solve the above problems,a DC offset reduction of neutral point voltage strategy based on reactive current compensation for Vienna rectifier with bipolar DC-link was proposed.By combining the amplitude of zero-sequence component,which is superimposed onto the three-phase reference voltage,the neutral point current for various power conditions can be obtained.The effect of the phase angle difference between the reference voltage and the input current on the neutral point current was analyzed,and the maximum reactive currents of the odd and even sectors was obtained according to the operating region of the Vienna rectifier.In order to increase the neutral point current under light load condition,the reactive current was injected to change the phase angle difference according to the contour of neutral point current,thereby achieving the balance of bipolar DC bus under light load conditions.Finally,the effectiveness of the proposed strategy was verified on the Vienna rectifier experimental platform.关键词
Vienna整流器/母线电压平衡/轻载运行/双极性直流母线电压/无功电流补偿Key words
Vienna rectifier/balance of DC-link voltage/light load/bipolar DC-link voltage/compensation of reactive current分类
信息技术与安全科学引用本文复制引用
黄招彬,张志坚,龙潭,胡斌,刘文龙,王高林..基于无功电流补偿的Vienna整流器双极性直流母线电压平衡策略[J].电气传动,2024,54(12):33-39,46,8.基金项目
广东美的制冷设备有限公司与哈尔滨工业大学战略合作框架协议(MH20210648) （MH20210648）
