Method for implementing bootstrap-supply charging in a motor controller at energized motor and motor controller using such a method
US8860344B2 · kind B2 · utility
2Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Oct 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a motor controller employing bootstrap-capacitor supplies and in particular to the situation where the bootstrap supplies have to be charged, while the motor controller is connected to a spinning and energized motor. The present invention introduces a method of recharging based on choosing a recharging sequence from a set of recharging sequences, where the choice depends on the state of the connected motor and in particular on the back-EMF voltages of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.