Patent ID: 9385585
Filing Date: 2016-07-05
CPC Classification: G05B,H02M,H02P

Claim Text:
1. A method for controlling the harmonics and resonances in an inverter for an electrical system, the method comprising: (a) determining possible voltage vector sequences that may be generated by the inverter by switching switches of the inverter and that may be supplied to the electrical system; (b) determining candidate sequences from the possible voltage vector sequences by estimating system response data for each voltage vector sequence and by keeping voltage vector sequences with admissible system response data; (c) determining a cost value for each candidate sequence, wherein each cost value is based on predicted switching losses of the inverter when switched with the candidate sequence; (d) applying a first voltage vector of a candidate sequence with a lowest cost value to the inverter; (e) extracting frequency information from predicted data, the predicted data including data of at least one of the possible voltage vector sequence and system response data; and (f) damping harmonic distortion of the electrical system by reintroducing the extracted frequency information into a control loop of the inverter.