System and method for low speed control of polyphase AC machine
US9186378B2 · kind B2 · utility
4Cited by
5References
9Claims
0Family size
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Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jan 24, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/76
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of starting a wind turbine generator of any type of polyphase AC machine, including, but not limited to, brushless DC or permanent magnet machines is disclosed. The machine starts from a dead stop or from low speed operation and is accelerated to the cut in speed for power production. The start-up is realized utilizing the common set of electrical conductors and the power converter also used for capturing the generated power. Under initial operation, the power converter executes a PWM modulation technique to drive the machine. Periodically, the PWM modulation is stopped to read the electrical position of the generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.