Frequency and load balance compensated, gate firing phase shift delay line
US10819260B2 · kind B2 · utility
0Cited by
30References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2018 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Feb 14, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/17
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for an alpha trim adjustment includes a phase delay circuit that creates a phase delay for a gate signal for a switching cycle. The gate signal is for a phase of a three-phase, phase shifted alternating current (“AC”) input of a multi-pulse motor drive powering a direct current (“DC”) motor. The apparatus includes an alpha trim circuit that modifies the phase delay with an alpha trim adjustment to create an adjusted phase delay for the switching cycle, a delay application circuit that applies the adjusted phase delay to the gate signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.