Converter circuit for a polyphase switched inductive load
US5864477A · kind A · utility
28Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A converter circuit for an inductive load, such as the phase windings of a switched reluctance motor, uses only n-switches for n-phases. In a four phase machine, each of three of the phases is serially connected with a switch across one voltage source. The remaining phase is serially connected with a switch across another voltage source which receives the inductive energy returned by the other three phases. This returned energy is used to energize the fourth phase. A generator converter is also disclosed in which the energy in the fourth phase is used to provide the excitation for the other three phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.