Power factor and harmonic current are important indexes to measure the performance of the traction system of the phase-controlled electric locomotive,in order to improve the power factor and reduce the harmonic current,the do-mestic phase-controlled electric locomotive traction system mostly adopts the multi-segment semi-controlled bridge rectifier circuit.In this paper,MATLAB/Simulink is used to establish the simulation model of two-section semi-controlled bridge rectifier circuit and three-section unequal semi-controlled bridge rectifier circuit to analyze the harmonic currents on the AC side,and analyze the power factor of the two-section semi-controlled bridge rectifier circuit and the three-section unequal semi-controlled bridge rectifier circuit according to the comparison of the THD and phase coefficient of the simula-ted current waveforms.
维普
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