Adaptive pulse width modulation overmodulation in three-phase voltage source inverters
US12355368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2023 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Jan 5, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method includes voltage vector command values for an electric motor implemented on a vehicle and operating in a linear region. The method also includes receiving system state information of the vehicle and determining that an overmodulation threshold is satisfied based on the system state information of the vehicle. Based on determining that the overmodulation threshold is satisfied, the method includes determining a modulation factor from a modulation index, generating a three-phase output based on the voltage vector command values and the modulation factor, and determining a plurality of control signals based on the three-phase output. Each respective control signal of the plurality of control signals corresponds to a respective switch among a plurality of switches of an inverter. The method also includes instructing the plurality of switches of the inverter to control operation of the electric motor in the overmodulation region based on the plurality of control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.