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使用模擬級联控制器的單相有源電力濾波器

Summary

The invention provides a cascade controller with analog single-phase active power filter, which includes a control circuit and connected to the main circuit, the control circuit includes a first proportional integral controller, a multiplier, a subtractor, feedforward control , a second PI controller, an adder. The principle is: the composition of these analog voltage loop current loop including two outer control loop, loop through the voltage regulator DC bus voltage, as well as parallel-type filter to generate a reference supply current, and through the current loop to reduce interference effects, track reference filter current, and generates a command signal to the master circuit to generate the compensation current. With the present invention may be used without the need for low-cost analog device microprocessor may be able to achieve a good harmonic suppression and power factor correction active power filter, thereby greatly reducing the cost of production of active power filter , and no calculation of the load current of the fundamental and harmonic mathematics needed large burden.

Supplementary Information

Inventor: Ceng, Qi-ming | Chen, Wei-yue
Priority Number: CN100364199C
IPC Current: H02J000301
Assignee Applicant: The Hong Kong Polytechnic University
Title: Single-phase active electric-power filter using analog cascade connection controller | Using single connected to analog cascade controller active electric power filter
Usefulness: Single-phase active electric-power filter using analog cascade connection controller | Using single connected to analog cascade controller active electric power filter
Novelty: Single-phase active electric-power filter using analog cascade connection controller

Industry

Electronics

Sub Category

Circuit Design

Others

TSANG K.M.
CHAN W.L.

Country/Region

Mainland China