Wide-band power electronics current source for reference purposes

In the paper one of control methods of electrical systems is presented. In this particular case the electrical system has been precision wide-band power electronics current source. This source has been fundamental part of flexible Reference Current Generator for testing of energy meters and other laboratory purposes. The control module of Generator utilizes floating point DSP microcomputer for power electronics applications. This module controls directly H-bridge, IPM based, power electronics inverter with passive low-pass filter at the output. This type of controlled current source is able to generate current, that shape strictly responds the reference signal waveform. Following parts of the paper describes: structure, control algorithms and investigations results of laboratory model of Generator.