Harmonic neutralized frequency changer (HFNC) control system and a HFNC including the same

摘要

A control system for a harmonic neutralized frequency changer. The control system includes a processor, a narrow band harmonic controller and a fundamental current controller. The narrow band harmonic controller is communicably connected to the processor and is configured to reduce a positive sequence component, a negative sequence component and a zero sequence component of a harmonic generated by a cycloconverter of the harmonic neutralized frequency changer. The fundamental current controller is communicably connected to the processor and is configured to reduce a fundamental frequency component of current flowing in a neutralization inverter of the harmonic neutralized frequency changer.

主权项

1. A control system for a harmonic neutralized frequency changer, the control system comprising:
a processor; a narrow band harmonic controller communicably connected to the processor, wherein the narrow band harmonic controller is configured to reduce the following components for a harmonic generated by a cycloconverter of the harmonic neutralized frequency changer:
a positive sequence component;a negative sequence component; anda zero sequence component; and a fundamental current controller communicably connected to the processor, wherein the fundamental current controller is configured to reduce a fundamental frequency component of current flowing in a neutralization inverter of the harmonic neutralized frequency changer.