Motor controller power switch arrangement
US6356043B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 22, 2001 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polyphase inverter employs multiple power semiconductor switches both for its operation and to distribute the current and heat loads for improved operation and cooling. The inherently high currents required for motor operation are divided among a plurality of smaller conductors and semiconductor switches, making a printed wiring board feasible both for power distribution and for control. The approach also permits shorter path lengths to the switches, reduced inductance, faster possible operation of the power switches, and reduced transient activity outside of the immediate switch area. Signals derived from various power points can enable the controller to assess actual current and power distribution and to apportion losses appropriately, or to limit total power output should the losses be deemed excessive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.