AC variable speed driving apparatus and electric vehicle using the same
US5365153A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Jun 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An AC variable speed driving apparatus including an AC motor and an inverter for driving the motor. The AC motor includes a synchronous motor and an induction motor. The synchronous motor includes first stator windings and a first rotor having a permanent magnet. The induction motor includes second stator windings and a second rotor. The first and second stator windings are disposed so that they do not magnetically interfere with each other. The first and second rotors are mounted on a common axis of rotation. The inverter supplies AC power to the stator windings so that the synchronous motor and the induction motor are driven independently. A highly efficient, large output and low cost system can be realized in a wide speed range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.