基于统一功率质量调节器的滑动模式的直接功率控制
Tapankumar Trivedi1, Rajendrasinh Jadeja1, Praghnesh Bhatt2
1Department of Electrical Engineering, Marwadi University, Rajkot-Morbi Highway, Rajkot, 360003, Gujarat, India.
Heliyon
|December 17, 2024
概括
一个新的基于滑动模式的直接功率控制 (SMC-DPC) 通过减少波和改进功率跟踪来提高统一功率质量调节器 (UPQC) 的性能. 这种先进的控制方法在配电系统中提供了优越的电力质量.
科学领域:
- 电气工程 电气工程
- 电力系统工程 电力系统工程
- 控制系统 控制系统
背景情况:
- 统一的电力质量调节器 (UPQC) 减轻了配电系统的电力质量问题,如波和电压下降/膨胀.
- 在UPQC中,常规的滑动模式控制器 (SMC) 显示出聊天,广泛的开关频率变化和合的主动/反应功率控制.
- 这些局限性阻碍了UPQC在动态和稳定状态条件下的最佳性能.
研究的目的:
- 为UPQCs提出和评估一种基于滑动模式的新型直接功率控制 (SMC-DPC).
- 通过减少聊天和切换频率变化来解决传统SMC的局限性.
- 为了实现UPQC串联和串联补偿器中主动和反应功率的同时和精确调节.
主要方法:
- 开发了一种非线性控制策略,SMC-DPC,用于UPQC的分流和串行补偿器.
- 实现了基于实时功率错误的电压向量选择,以实现优化控制.
- 在使用MATLAB Simulink®的20kVA系统上模拟了拟议的SMC-DPC.
主要成果:
- 实现源电流总波扭曲 (THD) 1.52%,明显低于传统的SMC (2.31%) 和线性控制器 (5.11%).
- 证明了对电网参数变化的稳定性和在强电网和弱电网中有效的性能.
- 与SMC和线性控制器相比,在弱电网中减少了13.71%和14.54%的线路损失.
结论:
- 拟议的SMC-DPC有效地减轻了电力质量问题,并提高了UPQC的性能.
- 通过简化系统设计,SMC-DPC提供了改进的稳定状态和动态功率跟踪.
- 结果符合IEEE-519和IEC 61000-3-12标准,证实其适用于配电系统.
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