System and method for single-phase and three-phase current determination in power converters and inverters
US9595889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2013 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Oct 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method for capturing current information for a power converter is disclosed. The current monitoring system includes a control system operably connected to a circuit having a plurality of semiconductor switches that are controllable to convert an input power to an output power having a desired voltage and current. The control system includes a PWM signal generator to generate switching signals that control switching of the switches, gate drivers to facilitate switching of the switches, and desaturation circuits to provide overcurrent protection to the switches. The control system further includes a processor that receives voltage data from the desaturation circuits regarding a measured voltage across each of the switches, determines a current through each of the switches based on the voltage across each respective switch, and calculates an input current to the circuit or an output current of the circuit based on the determined currents through the switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.