Multilevel PWM voltage source inverter control at low output frequencies
US6337804B1 · kind B1 · utility
22Cited by
12References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Sep 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/487
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multilevel voltage source inverter and related control scheme in which a VSI controller operates in a low frequency mode of operation below a threshold operating frequency to more evenly distribute the duty cycle and thermal loss of the VSI switches. The technique makes use of multiple alternative switching states which achieve the same output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.