Variable link sensorless brushless direct current motor controller for space and hardened applications
US9444376B2 · kind B2 · utility
2Cited by
18References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2013 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jul 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sensorless motor controller includes a variable link control, including a radiation-hardened field programmable gate array (FPGA) and a back electromotive force (EMF) decoder circuit. The back EMF decoder infers the position of a rotor of the motor. A filter on the decoder conditions the back EMF signal and has multiple cutoff frequencies which can be dynamically controlled by the FPGA in order to compensate for phase shift in the back EMF signal. The FPGA also controls a variable DC link and its digital speed control loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.