一个新的双歇斯底里控制器用于管理三相动态电压恢复器
Vimala V1, Ponmani C2, Saravanan I1
1Sankar Polytechnic College (Autonomous), Sankar Nagar, 627 357, India.
Heliyon
|December 6, 2024
概括
动态电压恢复器 (DVR) 的新控制策略确保正弦形源电流和单位功率因子. 该系统有效地减轻电压下降和膨胀,为负载提供稳定的电力,无需复杂的DQ转换.
科学领域:
- 电气工程 电气工程
- 电力系统 电力系统
- 控制系统 控制系统
背景情况:
- 电力系统中的电压下降和膨胀会破坏敏感负载并影响电力质量.
- 现有的动态电压恢复器 (DVR) 控制方案通常依赖于像DQ这样的复杂转换,增加了实现的复杂性.
- 对于保持稳定的电源供应,需要强大高效的DVR控制至关重要.
研究的目的:
- 为三相动态电压恢复器 (DVR) 提出并验证一项新型控制方案.
- 为了实现正弦形源电流波形和近单位功率因子操作.
- 为了克服电压下降和膨胀,确保负载的平稳电源供应.
主要方法:
- 实施功率因子校正 (PFC) 前端整流器来调节直流链路电压.
- 使用个人PI和hysteresis电流控制器,用于PFC整流器和DVR转换器.
- 采用个别电流估计的分相控制方法,消除了对DQ转换的需求.
主要成果:
- 拟议的控制方案成功地以接近单位功率因子的正弦形源电流产生.
- DVR有效地弥补电压下降和膨胀,保持稳定的负载电压.
- 该系统证明适用于平衡和不平衡负载条件.
结论:
- 新的DVR控制方案为改善电源质量提供了一个简单但有效的解决方案.
- 消除DQ转换提高了实用性,并减少了控制系统的复杂性.
- 通过 MATLAB/SIMULINK 模拟和实验原型的验证证实了拟议的系统的有效性.
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