About 56 results
https://drivepatents.com/patents/986762 · 18 Sep 2013
A control device for controlling a rotary electrical machine functioning as a motor and as a power generator, the device being provided with a power conversion circuit serving to function as an inverter for supplying a drive current from a battery to the r...
https://drivepatents.com/patents/989767 · 12 Jun 2013
A rotor for a permanent magnet electrical machine comprises a ferromagnetic core structure (102,130) having cavities which divide the ferromagnetic core structure (102,130) into pole regions (103), a yoke region (104), and bridges (105,106) between them. T...
https://drivepatents.com/patents/989764 · 12 Jun 2013
A system for commissioning an electrical drive of e.g. a mobile working machine comprises a memory device (101) attached to or otherwise associated with an electrical machine (120) of the electrical drive and data transfer equipment (102, 103, 105) for rea...
https://drivepatents.com/patents/990707 · 15 May 2013
A method and system are provided for controlling a motor 10. The method includes obtaining via a signal unit 60 electrical signals of the motor. The electrical signals include a motor torque and an angular velocity. The method further includes calculating ...
https://drivepatents.com/patents/996283 · 7 Nov 2012
An AC motor drive control device including: an inverter INV, having a plurality of switching elements subjected to on-off control, for converting a DC voltage to an AC voltage with a desired frequency to drive an AC motor 6; a motor opening contactor MMK c...
https://drivepatents.com/patents/999540 · 8 Aug 2012
Disclosed is a system and a method for controlling torque of induction motor in electric vehicle. The system and method for controlling torque of induction motor in electric vehicle according to the present disclosure has an advantageous effect in that tor...
https://drivepatents.com/patents/1000706 · 4 Jul 2012
Problem to be solved: To provide an electric power conversion device that normally operates, even when the voltage of a DC power supply or the like changes, by suppressing electric oscillations in an LC filter circuit so as to suppress transient oscillatio...
https://drivepatents.com/patents/1003868 · 28 Mar 2012
The present invention provides a generation system for rail cars which controls the operation or generation output of an engine generator without the need for electric transmission of control information between an engine control system and a generation co...
https://drivepatents.com/patents/1005355 · 8 Feb 2012
The chain (10) has a modulation factor variation unit reducing modulation factor with respect to modulation factor in absence of the modulation factor variation unit when rotor rotation speed (Vrotor) belongs to a first interval of values lower than a pred...
https://drivepatents.com/patents/1005694 · 1 Feb 2012
A motor speed determining circuit determining a rotation speed of a motor is provided and a processing of generating motor driving waveform is switched in accordance with the rotation speed of the motor. A resolver signal outputted from a resolver 2 is con...