Patent ID: 11876438
Assignee: INNOMOTICS GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A system for reducing input harmonic distortion of a power supply, the system comprising:
a power source coupled to the power supply;
the power supply comprising a controller;
an input stage configured to receive an input signal from the power source, wherein the input signal comprises an input frequency, wherein the input signal is a three-phase input signal and wherein the power source is a three-phase power source;
wherein the power supply is configured to convert the input signal to an output signal, wherein the output signal has an output frequency; and
an output stage configured to generate output power based on the output signal;
wherein the controller is configured to provide control signals to modify the output signal,
wherein the controller further comprises controls to modify the output signal and a pulse-width modulation (PWM) module,
wherein the controls modify the output signal by injecting a frequency component into the output signal,
wherein the injected frequency component is a frequency component that is three times the output frequency of the output signal and has a phase-shift dependent on a load power factor which reduces distortion at the input stage of the power supply, and
wherein the system further comprises a single-phase load that is insensitive to a distortion in the modified output signal.