About 323 results
Showing the first 200 results.
https://drivepatents.com/patents/960565 · 20 May 2015
A power conversion unit (115) performs an AC mode or DC mode conversion operation in which AC or DC power is converted to power driving a motor (105) in order to supply a load. In response to the output of a sequence test signal instructing execution of a ...
https://drivepatents.com/patents/960735 · 13 May 2015
A wireless power supply system is a system wirelessly supplying electric power through electromagnetic waves. The wireless power supply system includes a power transmitter (1) transmitting an electromagnetic wave (2), and a plurality of power receivers (3)...
https://drivepatents.com/patents/961124 · 6 May 2015
To improve power failure detection accuracy, while increasing power failure detection sensitivity as compared to that in conventional techniques, in a controller of an AC electric vehicle having a power failure detection function in an overhead contact lin...
https://drivepatents.com/patents/960985 · 6 May 2015
The present invention is to realize a railway-car total heat exchange ventilation system for railway-car air-conditioning ventilation equipment, which is capable of maintaining comfort inside the car that would be impaired by rapid variations in the extern...
https://drivepatents.com/patents/960930 · 6 May 2015
A control device for an AC electric vehicle that is applied to a configuration in which an SIV 7 is connected to an intermediate DC circuit unit 40 between a CONV 3 that converts an AC voltage input through a main transformer 2 to a DC voltage and an INV 4...
https://drivepatents.com/patents/951201 · 22 Apr 2015
In brake control based on commands of a plurality of systems, higher-level priority is ensured and a configuration for performing skid control is simplified. An adjustment valve (3) adjusts fluid supplied from a fluid source (2) to a predetermined pressure...
https://drivepatents.com/patents/961794 · 15 Apr 2015
An electric vehicle control apparatus includes a plurality of current collectors that take in electric power from an outside, a convertor unit that converts a voltage input through the current collectors into a direct current having a predetermined value a...
https://drivepatents.com/patents/951687 · 25 Mar 2015
A cover (10) for an air conditioning device for a railway vehicle is a cover for an air conditioning device for a vehicle, which covers an air-conditioner main body. The cover (10) includes a core (11) made of a foamed material having heat insulating prope...
https://drivepatents.com/patents/951644 · 25 Mar 2015
A field winding rotating electrical machine includes a field current detection section (110) configured to detect a field current flowing in a field winding, a field current control section (100) configured to calculate a duty ratio of a current supplied t...
https://drivepatents.com/patents/962667 · 4 Mar 2015
A rotor core 6 includes magnet insertion holes 9 embedding permanent magnets 9a and arranged in a substantially U-shape, facing an outer circumferential surface of a rotor 5, and includes hollow portions 9b formed at both side surface portions in a directi...