Pulse-width modulation scheme for managing thermal loading of an inverter during stall
US11482923B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jul 30, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system includes a controller for a DC to AC inverter including a processor configured to execute instructions to perform operations including: generating a first pulse for a first phase of a center-aligned PWM signal to alternately activate a first phase switch of a first switch group of the inverter for a first duration and a first phase switch of a second switch group of the inverter for a second duration within a period of the PWM signal; and generating a second pulse for a second phase of the PWM signal to alternately activate a second phase switch of the first switch group of the inverter for a third duration and a second phase switch of the second switch group of the inverter for a fourth duration within the period of the PWM signal, wherein the second duration is different from the third duration during a stall condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.