Regulator device for an asynchronous machine used in particular as a drive for electric vehicles
US5998959A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1999 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jan 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control apparatus for an asynchronous machine, in particular as a drive for electric vehicles, is equipped with an incremental transducer for the rotation speed of the asynchronous machine and a torque setpoint transducer, the signals of which can be delivered to a setpoint-value entry device in order to generate setpoint values (three-phase reference sine-wave system) for a closed-loop-controlled inverter or inverter power section to operate the asynchronous machine. The setpoint-value entry device contains means for defining at least the rotor frequency (slip frequency) and the amplitude as a function of the desired torque setpoint value. The setpoint-value entry device contains a summing device for adding or subtracting the rotor frequency to or from the mechanical rotation frequency, corresponding to the rotation speed, of the asynchronous machine as a function of the instantaneous rotation direction, the desired rotation direction, and the direction of the desired torque. On the basis of the output signal of the summing device, current setpoint profiles for the inverter or inverter power section, the amplitudes of which can be set as a function of the predefined amplitude, c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.