About 56 results
https://drivepatents.com/patents/962487 · 4 Mar 2015
An induction motor type electric train and a control method for the same are proposed in which overcurrent to induction motors is restrained and therefore overheat of the induction motors due to overcurrent can be prevented effectively. An induction motor ...
https://drivepatents.com/patents/969248 · 8 Oct 2014
An inverter device for an electric vehicle includes an inverter circuit 2 that controls an electric motor 3 connected to a wheel 8 via a connecting member and a control unit 20 that controls torque of the electric motor 3. The control unit 20 includes a cu...
https://drivepatents.com/patents/971348 · 13 Aug 2014
A charging apparatus and an electric vehicle including the same are disclosed. The charging apparatus includes a converter for converting an input alternating current (AC) voltage into a direct current (DC) voltage in a charging mode, and a controller for ...
https://drivepatents.com/patents/974789 · 21 May 2014
A control device stores, as a dead time Td, a period from a point of time of a switching-off operation of an inverter to a point of time when an inverter output voltage becomes lower than a control target value "0". In overmodulation PWM control over the i...
https://drivepatents.com/patents/975061 · 14 May 2014
An inverter control device including: an inverter 6 configured to convert direct-current power inputted from a direct-current power supply into alternating-current power, and to supply the alternating-current power to a motor; a command value calculation u...
https://drivepatents.com/patents/978187 · 26 Feb 2014
An object is to provide a control apparatus for an AC motor capable of suppressing electrical oscillation of an LC filter circuit even when the magnitude of a torque command is small or close to zero and stably driving and controlling the AC motor. A contr...
https://drivepatents.com/patents/979761 · 15 Jan 2014
An efficiency map generating apparatus (100) generates an efficiency map of motors (M) connected to drive wheels of a mobile body and includes an instructed torque detecting unit (111) that detects an instructed torque input for the multiple motors (M), a ...
https://drivepatents.com/patents/979739 · 15 Jan 2014
An efficiency map generating apparatus (100) generates an efficiency map of motors (M) connected to drive wheels of a mobile body and includes an instructed torque detecting unit (111) that detects an instructed torque input for the multiple motors (M), a ...
https://drivepatents.com/patents/981214 · 11 Dec 2013
A target power value determining unit (200) determines target power values Pc1 * and Pc2* such that a sum £Pc* of target load powers as a sum of target load power Pc1* and target load power Pc2* does not exceed a sum £Win of allowable charging powers and...
https://drivepatents.com/patents/983867 · 2 Oct 2013
A method for controlling operation of a torque-assist motor includes determining a rotational position of the torque-assist motor and producing a motor speed signal that is indicative of a rotational speed of the motor. One or more gain factors are produce...