Low voltage, two-level, six-pulse induction motor controller driving a medium-to-high voltage, three-or-more-level AC drive inverter bridge
US7834579B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Feb 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53876
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and circuit enabling off-the-shelf controllers designed for use with a two-level AC drive inverter bridge (1920) to drive inverter bridges with three-or-more levels. Signals from an ordinary induction motor controller or a two-level induction motor controller (2200) are used to drive the twelve-or-more switches of a three-or-more level inverter bridge (1920), as are used in medium-and-high voltage applications. The proper sequence and timing of switching for the three-or-more-level inverter bridge is based in-part upon either the output of the six pulse-width modulators, or the output of the flux and torque control device, or the voltage control device (2210), of the two-level controller (2200).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.