Commutation method and apparatus for a DC to AC inverter driving a three-phase asynchronous AC motor
US7804264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2008 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Jan 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53876
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Present invention belongs to the field of inventers, motor controllers and pulse modulated waveform generation methods and circuits. More specifically it belongs to such methods and circuits utilizing fundamental vectors. This invention features better and more efficient fundamental vectors. The proposed method offers reduced losses, increased efficiency and longer life time of inverters and motor controllers. Better approximation of a three-phase voltage waveform approaching the ideal one is a significant advantage of the proposed method. Another advantage is an easy decomposition of any point of an ideal sinusoidal voltage waveform into the fundamental vectors. This invention is particularly useful for a vector control of asynchronous AC motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.