About 323 results
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https://drivepatents.com/patents/970859 · 27 Aug 2014
Power flow in an electric power network is optimized by first decomposing an optimization problem into a set of disjoint parameterized optimization problems. The disjoint optimization problems are independent of each other, and the decomposition is based o...
https://drivepatents.com/patents/970840 · 27 Aug 2014
A method determines power consumption of a load in a feeder section of an ungrounded power distribution system. Borders of the feeder section are defined by an importing device connecting the feeder section to an upstream feeder section, and by at least on...
https://drivepatents.com/patents/971199 · 20 Aug 2014
A digital protection control device 9 that acquires a bus voltage by using data from a protection control terminal 8 that converts a voltage detected by a voltage transformer 7 arranged on a plurality of lines 3, a state of a circuit breaker 4 arranged on ...
https://drivepatents.com/patents/971840 · 6 Aug 2014
There is provided a control device for an electric motor that controls the operation of the electric motor by outputting PWM signals to switching elements included in an inverter. The control device for the electric motor includes a voltage-command generat...
https://drivepatents.com/patents/971772 · 6 Aug 2014
In a rectifier device (2) for full-wave rectifying an output of a vehicle alternating-current generator (1), a schottky barrier diode having a characteristic whose forward voltage drop with respect to a forward current is small and whose reverse leakage cu...
https://drivepatents.com/patents/971727 · 6 Aug 2014
An object is to prevent a motor and an inverter from being damaged due to the flow of a large current when a compressor is heated by supplying a high-frequency AC voltage to the compressor. The heat pump device includes an inverter control unit outputting ...
https://drivepatents.com/patents/971661 · 6 Aug 2014
Disclosed is a method of updating a vehicle air-conditioning apparatus such that a first air-conditioning apparatus (100a) which is disposed in a frame (8) mounted on a vehicle (1) and in which an HCFC or CFC refrigerant is used is updated to a second air-...
https://drivepatents.com/patents/972226 · 23 Jul 2014
To provide a refrigerating and air-conditioning apparatus that is capable of, even during a heating operation under air conditions leading to formation of frost, performing a defrosting operation while simultaneously continuing a heating operation and that...
https://drivepatents.com/patents/972219 · 23 Jul 2014
To provide a refrigerating and air-conditioning apparatus that is capable of, even during a heating operation under air conditions leading to formation of frost, performing a defrosting operation while simultaneously continuing the heating operation and th...
https://drivepatents.com/patents/972214 · 23 Jul 2014
A brake control apparatus (1) is provided with: a target value input device (40) that accepts a target value for the output pressure of a charge valve/discharge valve as input; an actual value input device (41) that accepts an actual value of the output pr...