...
首页> 外文期刊>Electric power systems research >An improved virtual current method for single-phase converters under frequency variations
【24h】

An improved virtual current method for single-phase converters under frequency variations

机译:频率变化下单相转换器的改进虚拟电流方法

获取原文
获取原文并翻译 | 示例
           

摘要

Few papers concern about the instantaneous current control (ICC) scheme for single-phase converters under frequency variations. The inherent relations between inaccurate virtual current and the relevant dynamic and static performances of converters are rarely reported. To address the issue, the inherent relations among the DC error, double-line frequency error and inaccurate virtual current are discussed in the paper. An improved virtual current method is proposed to eliminate the DC error and double-line frequency error, which are caused by frequency variations. Based on this method, a new ICC scheme, which is immune to frequency variations, is presented in steady-state scenarios. The improved virtual current method and the proposed ICC scheme are validated in a single-phase converter. Simulation and experimental results show that a unity power factor under frequency variations and a fast dynamic response under load change and voltage sag can be achieved with the proposed ICC scheme. (C) 2018 Elsevier B.V. All rights reserved.
机译:很少有论文关注频率变化下单相转换器的瞬时电流控制(ICC)方案。很少有虚假电流与转换器的相关动态和静态性能之间的内在联系。为了解决这个问题,本文讨论了直流误差,双线频率误差和不正确的虚电流之间的内在联系。提出了一种改进的虚拟电流方法,以消除由频率变化引起的直流误差和双线频率误差。基于这种方法,提出了一种在稳态情况下不受频率变化影响的新ICC方案。在单相转换器中验证了改进的虚拟电流方法和提出的ICC方案。仿真和实验结果表明,提出的ICC方案可以在频率变化下获得统一的功率因数,在负载变化和电压骤降下实现快速动态响应。 (C)2018 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号