Pulse width modulation interleaving
US11404954B2 · kind B2 · utility
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21References
3Claims
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Key dates
| Filing date | Sep 26, 2018 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Apr 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/123
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pulse width modulation (PWM) interleaving system is provided. The PWM interleaving system includes active harmonic filters (AHFs). The AHFs are disposed in parallel with each other and with a load. The AHFs are electrically coupled to a common coupling point that is electrically interposed between a grid and the load. The AHFs are configured to affect, by PWM, a characteristic of current flowing between the grid and the load. The PWM interleaving system further includes a controller operably coupled to the AHFs and configured to synchronize the PWMs of the AHFs to thereby cancel ripple currents propagating towards the grid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.