Systems and methods for short-time fourier transform spectrogram based and sinusoidality based control
US9948173B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2015 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Nov 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling the stability of a power converter in a closed-loop control system. The method includes inputting a variable to be controlled such as an output voltage of the power converter to a compensator or mathematical function for processing; determining, using the compensator, an error signal representative of a difference between the output voltage and a reference voltage; evaluating an energy content in a short-time Fourier transform spectrogram of the error signal from the compensator and/or evaluating the sinusoidality shape of the error signal; updating a transfer function of the compensator and other system parameters in accordance with the energy content or sinusoidality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.