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To study the problem of the injected harmonic currents into the overhead line by the modern AC rolling stock, a mini model is presented. A Hybrid Active Power Filter composed of a controlled PWM converter in series with a passive filter is proposed for the compensation of the injected harmonic current. Finally, the results of a two control strategies for the generation of the compensating reference are presented.

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The Auxiliary Resonant Commutated Pole (ARCP) Inverter is well-known by its small EM1 and switching loss. However, in the high v o l t a g e -high power application, there exist some problems such as the difficulty of the complete ZVS realization, influence of the conducting inductance and so forth. In this paper, the characteristics of the ARCP inverter is analysed, with consideration of the conducting inductance influence. The useful analytical results a r e obtained and confirmed by the e x p e r i m e n t .