Inverter with overload current protection
US5235487A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1991 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Jul 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/567
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an inverter with overload current projection, a half-bridge is divided in module form into two quarter-bridge branches. Disposed in the latter are a gate turn-off semiconductor component (7, 8), a freewheeling diode (9, 10) situated opposite with respect to a center point and a blocking capacitor (11, 12) in parallel with freewheeling diode (9, 10) and turn-off semiconductor component (7, 8). A measuring resistor (R1, R2) and a current-limiting component (L1, L2) are provided between a load terminal (3) of the bridge circuit and the center points of the quarter-bridge branches. The load current can be determined in a transient-free manner with the measuring resistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.