Ideal sinusoidal voltage waveform synthesis control system
US5047910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Jul 9, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/529
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for poly-phase power inverters that uses feedback sensed voltages and currents to control the switching of solid state power switches in the inverter bridges, producing a nearly ideal sinewave voltage output regardless of load induced or switching harmonic voltages. The system operates in combination with the inverter power switches and switch drivers, particularly incorporating a digital programed optimal controller with virtually no delay in implementing the feedback control, and automatically correcting for any sensed line voltage distortions. The system inherently provides a high recovery speed for voltage transients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.