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Patent Searching and Data


Matches 1,351 - 1,400 out of 10,551

Document Document Title
JP2012175871A
To provide a motor controller capable of performing consumption processing on regenerative electric power using a small-scale, low-capacity regenerative resistor.The motor controller includes: a converter circuit which generates a bus vo...  
JP5016674B2
In a motor control circuit which controls energization of a coil on the basis of a detection result of a rotor position, the control is performed so that the continuous rotation of the rotor due to its own inertia is suppressed and stopp...  
JP5019175B2  
JP2012520056A
The invention concerns a method for the operation of an underwater powerplant comprising a water turbine for purposes of absorbing kinetic energy from a flow of water; an electrical generator with converter feed, whose generator rotor is...  
JP2012165612A
To provide a DC motor ceiling fan which does not require positioning of a rotor at the time of start-up and surely rotates a motor in a desired direction so as to prevent reverse rotation from giving an uneasy feeling to a user.A DC moto...  
JP5008051B2  
JP5003723B2
To provide an electric actuator system that reduces the frequency of initialization settings. A rotary angle detective means 220 is used to detect a pulse signal generated according to a rotary angle of an electric motor 110 and to set a...  
JP4995944B2  
JP4997825B2  
JP4993389B2
Provided is a regenerative switched reluctance motor driving system which allows a motor to have a reduced size and weight and an increased efficiency as well as improved energy recovery efficiency at the time of regenerative braking wit...  
JP4989591B2  
JP4985805B2
The robot apparatus of the present invention autonomously makes natural motions. The robot apparatus is provided with a control means 32, which has a feeling/instinct model that causes a motion and changes the feeling/instinct model base...  
JP4986139B2  
JP4953006B2  
JP4945313B2  
JP4935337B2  
JP4937356B2
An electric vacuum cleaner which can detect the occurrence of a spark by an inexpensive structure and prevents smoking and ignition due to abnormal overheat in an end stage of life. The electric vacuum cleaner comprises a current detecti...  
JP4927614B2  
JP4924711B2
There are provided a smoothing capacitor (71) for storing an induced electromotive force generated by a three-phase induction motor (5), a regenerative transistor (81 to 86) for switching a terminal voltage of the smoothing capacitor to ...  
JP4922749B2
A fan system includes a stator magnetic pole, a driving unit and a real-time stopping unit. The driving unit is coupled with the stator magnetic pole and controls a polarity change of the stator magnetic pole in accordance with a driving...  
JP2012078718A
To save data in a memory and to set a state so that an accident does not occur by using regenerative power in accordance with slowing-down revolution of a motor when power supply from the outside is interrupted.When supply of AC power fr...  
JP4917680B1
During motor acceleration control period that starts at time T1, if power supply output or supply current exceeds a predetermined level at time T2, PWM control in a PWM converter is turned off until a deceleration control period of T3 to...  
JP4912688B2
The method involves comparing a voltage value measured on a DC bus with a determined limiting value by a comparator (10). Slope of an internal ramp (R) is forced to zero value when the voltage value is higher than the limiting value, in ...  
JP4912516B2
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 ...  
JP2012055981A
To stop a servo motor immediately with a dynamic brake and a mechanical brake, while controlling a load on a connection part between the servo motor and a reducer, when an angle sensor falls in an abnormality.When the abnormality of the ...  
JP4902514B2
To detect resistor disconnection without enlarging a circuit scale. Output of a main power generator 2 is converted into a DC current by a commutator 3 and a smoothing capacitor 4 so as to drive an AC electric motor 6 by converting the D...  
JP2012052320A
To provide an electric construction machine capable of starting an electric motor even when a temporary step-down occurs in an external power source when starting the electric motor.The electric construction machine includes an electric ...  
JP4898275B2  
JP2012050165A
To prevent damage of a stator winding of a motor even when seizure occurs in a contact of a motor drive switch.In the motor drive switch, in starting operation of the motor, timing when a first contact 21 is switched to a terminal (3) on...  
JP2012050249A
To provide a motor driving device capable of surely reducing a deceleration time within a variable speed operation range in a simple configuration.The motor driving device comprises: an AC motor 2 that drives a machine with square torque...  
JP4893075B2  
JP2012041905A
To provide a fan motor used for an all air system (duct system) air conditioner and useful for energy saving.The fan motor 1 is provided with a shaft 21 connected to the fan 11a of a blower 11 and a motor body 22 for rotatively driving t...  
JP4884534B2
An electric power processing device is provided with an induction heating device (9) that is comprised of an induction heater driving inverter (16) with which an electric power source rectifying capacitor (2) connected in parallel with i...  
JP3173826U
To provide an electric braking device for a machine for processing a printed material, which realizes a braking process as uniform as possible when an electric braking operation via a rectifier of a drive motor is impossible. An electric...  
JP4879237B2  
JP4876162B2  
JP4865054B2  
JP4868822B2  
JP2012016274A
To provide a motor drive controller capable of protecting itself from an electromotive force of a motor generated by the rotation of a fan rotated by external wind, increasing the number of turns of a motor coil, and suppressing a motor ...  
JP4856508B2  
JP4850951B2  
JP4845881B2
An electromagnetic brake device (3) is assembled to a rear end section of a small-sized motor (1). The electromagnetic brake device (3) has a rotating disc (11) fixed to a motor rotation shaft (4), a sliding disc (12) slidable in an axia...  
JP4847108B2  
JP2011259577A
To lower a rotational speed of a turbine rotating by inertia as rapidly as possible.This power generation system includes: a main generator 10 that generates electric power to be transmitted to a power system; an auxiliary generator 40 t...  
JP2011259569A
To provide a motor control system equipped with an invertor and a smoothing capacitor connected to a DC power, and an AC motor driven by the invertor preventing an unintended rotation of the AC motor when the AC motor consumes electric e...  
JP2011244557A
To provide a power conversion device consisting of multiple inverters without power regeneration capability which can generate a prescribed braking torque for decelerating an AC motor in both cases where the AC motor rotates at a high sp...  
JP4826946B2  
JP4822756B2  
JP4817084B2
A motor controller (13) and a safety module (14) comprise a motor control circuit part (31) configured to perform the power supply control to a motor (2) in accordance with a predetermined driving control command, a function of selecting...  
JP4818847B2
A controller is operable in one of a plurality of operational modes, which include an estimated temperature computation performing mode for performing computing of an estimated temperature of the motor and an estimated temperature comput...  

Matches 1,351 - 1,400 out of 10,551