Motor apparatus with voltage step-up function
US8362671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2009 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The motor of the motor apparatus includes a rotor including a plurality of magnetic poles and a stator formed with tooth portions radially extending with a pitch equal to 5/6 times or 7/6 times a pole pitch of the rotor. Each tooth portion is formed with a brim portion circumferentially extending from both circumferential sides of the tooth portion. The phase ends of the stator winding are connected respectively to the AC ends. The DC power supply is connected between one of the DC ends and the neutral point of the stator winding. The control section controls the multi-phase inverter such that a multi-phase AC current containing a DC component flows through the stator winding. The circumferential width of the brim portion is smaller than or equal to 0.75 times a cross-sectional size of the electric wires constituting the stator winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.