Method for adjusting an inverter connected to an electric motor via a du/dt filter
US10910983B2 · kind B2 · utility
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4References
20Claims
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Assignee
Inventors
Key dates
| Filing date | Aug 16, 2019 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Aug 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The method for adjusting an inverter (1) connected to an electric motor (2) via a du/dt-filter (3) and a motor cable (4) is described. The method comprises the steps of generating a pulse on the motor cable by means of the inverter (1) measuring a cycle time of a pulse answer from consecutive current peaks, determining a time delay td from the cycle time, determining a dwell time Tdwell to be avoided from the time delay td by Tdwell=k*td, k ∈ {2, 6, 10, . . . } adjusting the time between consecutive switchings of the inverter (1) to be out of a range from Tdwell−tA to Tdwell+tA wherein tA is an allowable deviation from Tdwell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.