Method for protecting an electrical modular unit from overcurrent damage
US10530240B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2014 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Oct 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/217
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method protects an electrical modular unit from overcurrent damage by virtue of an inductive component converting electrical energy into magnetic and thermal energy, in which a bypass bypasses the inductive component during regular operation of the modular unit and current flows via the bypass. In order to reduce current spikes in the event of a surge current without significantly enlarging the semiconductor switching the circuit inductance for the commutation circuit, it is proposed that the bypass is opened by an overcurrent flowing through the bypass which is above a current value that can be achieved during fault-free operation of the modular unit, with the result that more current is forced through the inductive component than residual current flows through the bypass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.