Integrated current sensor configurations for AC motor drives
US4777579A · kind A · utility
37Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1988 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Jan 4, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An AC polyphase motor drive includes a current-controlled inverter comprising a plurality of semiconductor devices made up of power switches, such as IGBTs, and diodes. Current sensors integral with respective ones of a first group of the semiconductor devices sense the current delivered to each of the motor phase windings and a controller compares the sensed currents to a set of command signals to control operation of a second group of the semiconductor devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.