Resistive braking module with thermal protection
US7262571B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Feb 23, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H5/047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A braking module includes a braking load, an input terminal, an output terminal, and control logic. The input terminal is adapted to receive a motor drive signal. The control logic is adapted to receive a motor enable signal, couple the output terminal to the input terminal responsive to the motor enable signal being asserted, couple the output terminal to the braking load responsive to the motor enable signal being deasserted, and prevent the coupling of the output terminal to the input terminal responsive to a temperature of the braking module exceeding a predetermined disable set point. A method for controlling a motor includes coupling a drive lead carrying a motor drive signal to a motor lead of the motor responsive to a motor enable signal being asserted. The motor lead is coupled to a braking load responsive to the motor enable signal being deasserted. The coupling of the drive lead to the motor lead is prevented responsive to a temperature of the braking load exceeding a predetermined disable set point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.