三相电压型 PWM 整流器的虚拟电网通量导向矢量控制

Q4 Engineering
Xiaowei Hu
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引用次数: 0

摘要

电力系统交直流转换技术中的不可逆二极管桥式整流器会产生较大的功率失真。此外,桥式整流器还会恶化电能质量,降低功率因数。由于近期功率器件技术的突破,三相脉冲宽度调制(3phase-PWM)整流器的使用迅速增长。其优点包括统一功率因数、无谐波失真和脉动直流。本研究提出了一种基于新型虚拟电网控制器的实际功率调节技术,可廉价调节性能良好的 3 相-PWM 转换器。该研究引入了一种新的无传感器控制方案,以改善 3 相-PWM 整流器的性能。所提出的控制技术采用了面向虚拟电网通量的矢量控制和带瞬时锁相环的二阶通用积分(SOGI-IPLL),以克服仅依赖低通滤波器估计值所固有的问题。虚拟电网通量值随后可确定相位差。IPLL 将相位角作为输入,用于构建面向功率的矢量控制。建议的面向电网磁通量的控制策略将 VFidea 与 SOGI-IPLL 相结合,以规避仅依赖低通滤波器 (LPF) 积分器提供估计值所带来的限制。改进的虚拟磁通(VF)估算器与直接功率控制相结合,能以更低的成本和更高的效率改善管理。建模结果表明,三相-PWM 整流器的直流电压输入和电网吞吐量可在整流和反转状态下成功调节,从而使三相-PWM 整流器有效发挥作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Virtual Power Grid Flux-Oriented Vector Control for Three-Phase Voltage-Type PWM Rectifier
More considerable power distortions are produced by the non-reversible diode-bridge rectifiers in the power system’s AC-DC conversion technology. In addition, bridge-rectifiers worsen energy quality and decrease power factor. Three-Phase Pulse Width Modulation (3phase-PWM) rectifiers have seen rapid growth in use due to recent breakthroughs in power device technology. Its benefits include a unity power factor, no harmonic distortion, and pulsating direct currents. An actual power regulation technique based on a novel virtual power grid controller is suggested to cheaply regulate a 3phase-PWM converter with good performance. The study introduces a new sensorless control scheme to improve the 3phase-PWM-performance rectifier. The proposed control technique employs the virtual power grid flux-oriented vector control with a Second-Order Generic Integral with Instantaneous Phase Lock Loop (SOGI-IPLL) to overcome the problems inherent in relying only on low-pass filter estimates. The virtual power grid flux value may then determine the phase difference. The IPLL takes the phase angle as an input and is utilized to construct the power-oriented vector control. The proposed power grid flux-oriented control strategy combines the VFidea with SOGI-IPLL to circumvent the restrictions imposed by relying only on an integrator of low-pass filters (LPF) to provide an estimate. A refined Virtual flux (VF) estimator with direct power control can improve management at a cheaper cost and more efficiently. The modeling findings demonstrate that the DC voltage input and power grid throughput of the 3phase-PWM rectifier can be successfully regulated in both the rectification and inversion states, allowing for the effective functioning of the 3phase-PWM rectifier.
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来源期刊
International Journal of High Speed Electronics and Systems
International Journal of High Speed Electronics and Systems Engineering-Electrical and Electronic Engineering
CiteScore
0.60
自引率
0.00%
发文量
22
期刊介绍: Launched in 1990, the International Journal of High Speed Electronics and Systems (IJHSES) has served graduate students and those in R&D, managerial and marketing positions by giving state-of-the-art data, and the latest research trends. Its main charter is to promote engineering education by advancing interdisciplinary science between electronics and systems and to explore high speed technology in photonics and electronics. IJHSES, a quarterly journal, continues to feature a broad coverage of topics relating to high speed or high performance devices, circuits and systems.
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