Control of PWM inverters by pattern development from stored constants relating D.C. link harmonics to output distortion
US5053939A · kind A · utility
17Cited by
15References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 27, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Aug 27, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pulse-width-modulated inverter in which equations relating switching angles, d.c. link distortion and a.c. inverter output distortion are determined empirically or by computer modeling. The amplitude of a d.c. link harmonic is the equation variable and stored constants particularize the equation for the phase of the harmonic and each switching angle which is to be controlled in response to d.c. distortion. As the d.c. link harmonics change, switching angle modifications are calculated using the stored constants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.