Power supply system for an element, among a rotor and a stator of an electric machine, and method for controlling such system
US8519663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2011 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Dec 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/487
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply system is provided. The power supply system includes a converter converting a direct input current into a polyphase alternating output current including a plurality M of phases. The converter includes two input terminals, is arranged at the input of the element and delivers the polyphase alternating current to element. The power supply system also includes a controller controlling the converter, a storage bank including at least one storage capacitor between the input terminals, a device protecting the element from over-voltages or over-currents of the polyphase alternating current, between the converter and element, including a plurality of switching arms between the respective phases of the polyphase alternating current. Each switching arm includes two thyristors connected head-to-tail and in parallel. The controller applies a negative voltage to the terminals of at least one thyristor during a period greater than a predetermined turn-off time of the thyristor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.