公开(公告)号：US20050110474A1

公开(公告)日：2005-05-26

申请号：US10720297

申请日：2003-11-24

Applicant: Joe Ortiz ,  Joseph Miyamoto ,  Frank Wang

Inventor： Joe Ortiz ,  Joseph Miyamoto ,  Frank Wang

IPC: H02M1/14 ,  G05F1/40

CPC classification number: H02M3/156 ,  H02M1/14 ,  H02M2001/0019 ,  H02M2001/0022

Abstract: An active-power filter includes control circuitry to combine an integrated output-voltage feedback signal, an input-voltage sense signal and an output-load feedforward signal to generate a control signal. An output-load subsystem draws the output current from the active-power filter and the output-load feedforward signal indicates when current drawn by an output-load subsystem changes. In some embodiments, the output-load subsystem may draw output current from the power converter having an output current ripple at a nominal frequency, which may range, for example, between about 35 and 100 Hz. The control circuitry may include an integrator to integrate the output-voltage feedback signal. The integrator may have a control loop bandwidth significantly less than the nominal ripple frequency to loosely regulate the output voltage while the input current drawn by the active-power filter is tightly regulated.

Abstract translation: 有源电力滤波器包括组合集成的输出电压反馈信号，输入电压感测信号和输出负载前馈信号以产生控制信号的控制电路。 输出负载子系统从有功功率滤波器中抽取输出电流，输出负载前馈信号指示输出负载子系统当前绘制的电流何时发生变化。 在一些实施例中，输出负载子系统可以从具有在例如约35和100Hz之间的标称频率的输出电流纹波的功率转换器中绘出输出电流。 控制电路可以包括用于积分输出电压反馈信号的积分器。 积分器可能具有明显小于标称纹波频率的控制环路带宽，以便在由有源电力滤波器吸取的输入电流被严格调节时松动地调节输出电压。