Inverter current measurement using a shunt resistor
US8878516B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2009 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Jul 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for determining each current output of a three-phase inverter (102) comprises the following steps: inspecting an initial set of control signals for the inverter (102); identifying a measurement conflict when at least two of said control signals are asserted within a predetermined amount of time of each; if there is a measurement conflict, providing a first modified set of control signals to the inverter by shifting a position of at least one control signal related to the measurement conflict; and measuring a current through a shunt resistor based on the first modified set of control signals. Also, an electronic device and a digital processor (DSP) for determining each current output of three-phase inverter (102) are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.