Drive controller for a self-commutated converter
US7529111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Dec 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drive controller for a self-commutated converter providing a “safe stop” is described. The converter has two half-bridges, and the drive controller includes two control circuits having outputs operatively connected to respective converter valves of the half-bridges. Pulse inhibiting controllers are associated with the control circuits in one-to-one correspondence. The drive controller further includes a plurality of switches, each switch defining a disconnectable pulse inhibiting path and receiving control signals from one of the pulse inhibiting controllers. Each of the pulse inhibiting paths has an input which is connected to an external voltage, and an output which is connected, on one hand, via a diagnostic line to a corresponding pulse inhibiting controller and, on the other hand, to a control input of the corresponding control circuit. The switches can therefore be cyclically tested without service interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.