DC motor drive
US8198850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC motor drive (100) including power electronics (120) and control electronics (130). The power electronics (120) are arranged to receive a high voltage power supply and to controllably output that supply to a DC motor to controllably operate the motor. The control electronics (130) are arranged to receive a low voltage power supply and to control operation of the power electronics (120) and hence of the motor at least partly in response to signals received by the control electronics (130) indicative of at least one potential difference across the power electronics (120). The drive further includes a microprocessor (150) and an opto-coupler (170) arranged to sense the output of the power electronics (120) and to generate based thereon the signals in a form for optical transmission via opto-coupler (170) between the output of the power electronics (120) and the control electronics (130), thereby allowing galvanic isolation of the control electronics (30) from the power electronics (120). Forms of wireless transmission other than optical transmission are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.