具有滤波与能量回馈双功能的电力变换器研究

研究一种具有滤波与能量回馈双功能的电梯能量回馈器,当电梯处于能量再生状态运行时,回馈器将能量回馈到电网;当电梯处于非能量再生状态运行时,即回馈器处于闲置状态时,为了提高设备利用率,使回馈器运行在有源电力滤波状态。以并联型有源电力滤波器为研究对象,对其拓扑结构、补偿分量的检测算法、控制策略等问题作了较系统研究。实验结果表明,该回馈器工作稳定可靠,具有良好的动、静态性能。并在MATLAB环境下进行了相应仿真,仿真结果表明,该滤波器（回馈器）能够准确地补偿谐波电流和无功功率,动态响应速度也很快。

Study on Power Converter with Two Functions of Active Power Filter and Energy-feedback

The paper studies on an elevator energy-feedback device with double functions： active power filters and energy-feedback. The energy is return to the grid when the device works at the state of regenerating energy, conversely, the device works at the state of active power filter to improve utilization ratio when it is free. Taking paralleled active power filter as an investigated subject, systematic study is made for topology, detection algorithm of compensation reference and control strategies. The experimental result indicates that the device works steadily and reliably with excellent dynamic and static performance. Simulation results under MATLAB condition show that the device has accurate harmonic cturrnt compensation effectiveness and rapid dynamic response.