Control of the mains bridge of a frequency converter
US7248489B2 · kind B2 · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Jul 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/797
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a system for controlling the mains bridge of a four-quadrant PWM frequency converter provided with a direct-voltage intermediate circuit when power is flowing into the supply network. The mains bridge includes a controlled mains bridge (INU) for rectification of the mains voltage to produce a DC intermediate-circuit direct voltage (UDC) consisting of arms conducting during the positive and negative half cycles of the phase voltage of each phase of the supply network, each arm having a switch unit formed by a diode (D1–D6) and a power semiconductor switch (V1–V6), e.g. an IGBT, connected in inverse-parallel with it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.