Power factor controller for active converter
US5808880A · kind A · utility
22Cited by
21References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/304
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for controlling a regenerative drive having line and load converters connected by a DC link, the load converter for connection to an AC machine, and the line converter for connection to an AC source/sink by means of line reactors, the drive for causing real power to flow in the line reactors to control the DC link voltage at a selected DC voltage and for determining when a commanded line converter voltage exceeds a selected maximum line converter voltage for also causing reactive power to flow in the line reactors to reduce the line converter voltage required to control the real power flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.