Bus voltage limiter for converter apparatus with multiple DC buses
US10958188B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Sep 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a first DC bus, a second DC bus, a first converter circuit coupled to the first DC bus, and a second converter circuit coupled to the second DC bus. The apparatus further includes a limiter circuit coupled to the second DC bus, a first control circuit configured to sense a voltage on the first DC bus and to responsively control the first converter circuit to limit the voltage on the first DC bus, and a second control circuit configured to sense a voltage on the second DC bus and to responsively control the limiter circuit to limit the voltage on the second DC bus. The apparatus may include a modulation conversion circuit configured to provide a set of switch control signals to the converter circuits and implemented in a module that is also used to implement the second control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.