About 327 results
Showing the first 200 results.
https://drivepatents.com/patents/996285 · 7 Nov 2012
To include a power converter 2 that drives an induction machine 1 and a control unit 5 that controls the power converter 2. The control unit 5 includes a drive stopping unit 10. The drive stopping unit 10 includes a secondary-resistance-temperature detecti...
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/997015 · 24 Oct 2012
Objective: To reduce fluctuations in deceleration of an electric train and improve riding comfort even when the regenerative load is lacking during a regenerative brake operation. Resolution means: A drive control device (1) for an electric train according...
https://drivepatents.com/patents/997159 · 17 Oct 2012
Problem In a configuration in which an auxiliary power supply is connected to an intermediate link circuit of a main conversion unit, intermediate link voltage as input voltage of the auxiliary power supply is set at higher voltage depending on the main co...
https://drivepatents.com/patents/997163 · 17 Oct 2012
Included are a power converter 2 for driving an induction machine 1, a control unit 40 for controlling the power converter 2, and a brake force command computing unit 6 for computing a brake force command. The control unit 40 includes a regenerative brake ...
https://drivepatents.com/patents/997405 · 10 Oct 2012
A voltage transforming apparatus includes a primary winding (3) receiving an AC voltage, a plurality of secondary windings (4a, 4b) that are different in number of turns, and a voltage conversion circuit (5) for converting an AC voltage induced in each of ...
https://drivepatents.com/patents/997813 · 3 Oct 2012
The output pressure of a variable load valve (121) is controlled by a boost-switching solenoid valve (111). In the regular braking of the brake, the output pressure of the variable load valve (121) is boosted by the boost-switching solenoid valve (111), ad...
https://drivepatents.com/patents/997970 · 26 Sep 2012
An attaching system of an exhaust gas recirculation valve includes: an attachment unit 2 to be communicated with an exhaust gas circulation passage of an internal combustion engine; and an exhaust gas recirculation valve 1 that is fitted to the attachment ...
https://drivepatents.com/patents/998467 · 12 Sep 2012
A vehicle power generation voltage control apparatus is obtained, which has improved reliability, when in a faulty condition, of controlling an exciting current flowing through a field winding even if a monitor and detection circuit becomes faulty. An outp...
https://drivepatents.com/patents/998938 · 29 Aug 2012
To disclose a power converting apparatus for an electric vehicle including a power converter 2 that has switching elements Gu to Gz and drives a synchronous machine 1, an opening/closing unit 4, current detectors 3a to 3c, and a controller 6 that controls ...