Analysis on Harmonic Current of Three-phase Bridge Uncontrolled Rectifier

With the development of Power Electronic Load (PEL), which enables to simulate various loads, especially harmonic current load generated by uncontrolled rectifier, it is necessary to gain the precise harmonic current command according to different parameters of uncontrolled rectifier. Owing to the wide application of three-phase bridge uncontrolled rectifier, in this paper, the specific analysis on harmonic current of three phase bridge uncontrolled rectifier is presented. At first, theory analysis on harmonic current in continuous domain and discrete domain is deduced, and then simulation results testify the accuracy of the former analysis, finally, the program flow of obtaining the harmonic current command by using DSP is described.