Speed-variable maximum delay clamping when using variable-delay random PWM switching
US7421301B2 · kind B2 · utility
5Cited by
12References
22Claims
0Family size
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Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Apr 6, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/921
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system and a method of using the same for an electric machine having a random number generating module generating a random number ranging from a first value to a second value, a multiplying module multiplying the random number and a sample rate to generate an random delay value; and a delay limiter module limiting the random delay value as a function of speed of the electric machine and generating a limited delay value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.