About 80 results
https://drivepatents.com/patents/1012832 · 18 May 2011
Disclosed is a motor drive unit. The motor drive unit includes a case, a capacitor provided in the case and generating heat, an inverter provided in the case and configured to convert Direct Current (DC) power into Alternating Current (AC) power, and a wat...
https://drivepatents.com/patents/1013118 · 11 May 2011
A vehicle (1, 17) includes an electric drive motor (5, 19), an inverter (4) that provides a drive current to the electric motor (5, 19) and a controller (13) that controls the inverter (4). The controller (13) functions as a beat noise generation system th...
https://drivepatents.com/patents/1013869 · 13 Apr 2011
The control method involves determining signal of an allocation sensor of a driver place, particularly a driver seat that the driver place is not occupied, at the expiration of an allocation allowable time and determining a switching off signal of an entra...
https://drivepatents.com/patents/1073022 · 26 Oct 2005
The vehicle has an electric motor contributing to a displacement of an electric vehicle, and a chip card (11) with a removable electronic control circuit (10) to control the motor. The insertion of the chip card in a reader operates a control case and cont...
https://drivepatents.com/patents/1079062 · 23 Mar 2005
Industrial truck, e.g. a forklift truck, has an electric drive (13) and means (17) for determining the drive speed. Additionally a device (19) is provided for measuring the rate of change of the drive speed, especially at high rates of change. Measurement ...
https://drivepatents.com/patents/1100485 · 13 Nov 2002
A relay adhesion detecting device (10) of the invention is installed in an electric motor vehicle wherein a relay (14) is provided between a power source unit (12) comprising a plurality of secondary batteries and a load circuit including an electric motor...
https://drivepatents.com/patents/1103186 · 17 Jul 2002
An electric vehicle (1) including a rechargeable secondary battery (30), an electric motor (9) for driving a running section such as wheels and the like and a controller (5) for conducting control to drive the electric motor by electric power from the seco...
https://drivepatents.com/patents/1110514 · 5 Sep 2001
The device includes a deceleration sensor. A monitoring circuit outputs an error signal if the difference between the deceleration (b ist) and a reference deceleration (b soll) lies below a selected threshold (b s), in the event of dangerous or automatic b...
https://drivepatents.com/patents/1112442 · 13 Jun 2001
The electrical power supply units (1-5) supply power to traction motors (6,7), through the mixed thyristor bridge. An alternative current detector including a transformer, detects AC discharge on the power supply line. The primary of the transformer in det...
https://drivepatents.com/patents/1113431 · 25 Apr 2001
The method involves using a voltage measuring device connected between the earthed pole of the tram overhead line and the chassis. The measured voltage and its time are compared with known voltage-time curves, for a high voltage dropping quickly and a low ...