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JP2016116275A |
To obtain a monitoring system for an emergency oil pump, for improving a state monitoring level at the time of activating an emergency oil pump motor, by detecting an abnormality in a circuit for controlling current flowing in the emerge...
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JP5938341B2 |
To suppress an overcurrent generated by a star/delta connection circuit as an electric motor is actuated without using a reactor when electric power is supplied from an electric power supply vehicle.A control device 21 includes a power s...
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JP5924327B2 |
A motor control apparatus controls an induction motor to change from a free running state to a state in which a voltage applied to the induction motor and a frequency of the voltage satisfy a relationship. A voltage regulator executes a ...
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JP5910611B2 |
A motor control apparatus controls an induction motor to change from a free running state to a state in which a voltage applied to the induction motor and a frequency of the voltage satisfy a relationship. The motor control apparatus inc...
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JP2016052219A |
To provide a vehicle drive unit capable of more rapidly attenuating magnetic fluxes after notch-off, and to provide an inverter controller.A vehicle drive unit includes an induction motor, an inverter and an inverter control part. The in...
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JP5857624B2 |
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JP2016014324A |
To provide an electric compressor controller for promptly raising revolving speed to target revolving speed.A motor drive controller 4 driving a motor 2 that drives a compressor 3 by controlling a motor drive unit 5 connected to the moto...
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JP5838038B2 |
Proposed is a motor control device that executes rotational control that follows load fluctuations in a startup mode. The proposed motor control device is provided with: detection means 4 that detects a current peak value Ip and a curren...
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JP2015211518A |
To provide a spindle control device capable of suppressing rotation nonuniformity of a motor even when a spindle is activated before marker signal detection of a rotation position detector and further capable of shortening the time until...
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JP5792394B2 |
A system (11) for controlling a synchronous motor during a starting period is provided, wherein the synchronous motor has a stator with a at least one AC winding (12) and a rotor with at least one DC field winding (13), and the AC windin...
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JP5773845B2 |
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JP5765118B2 |
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JP5731753B2 |
A motor driving circuit receives a control pulse signal pulse-width modulated according to a target rotational speed, and drives a fan motor. A start pulse signal generating unit generates a start pulse signal having a predetermined duty...
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JP5724103B2 |
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JP2015095977A |
To provide an AC motor capable of suppressing generation of a starting current without increasing a starting period.The starting method for AC motor includes providing assistance of a torque of a DC motor to a starting torque of an AC mo...
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JP2015078607A |
To optimize a start time of an electric motor by optimizing a time to supply electric current to the electric motor by star connection at each temperature.A starting device 48 of a compressor 1 including a compressor body 10 having a suc...
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JP2015071420A |
To provide an electric propulsion system for an electric propulsion ship of low cost by sufficiently suppressing start current of a propulsion motor.In an electric propulsion system 1 for an electric propulsion ship which includes a prop...
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JP2015033150A |
To reduce possibilities that discharge resistance may be reconnected even by an external disturbance or the like after a synchronous operation and downsize a circuit.A field winding-type synchronous electric machine comprises: a stator 5...
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JP2015024354A |
To provide a technique for drive control of a motor provided on a centrifugal separator and requiring a high starting torque.A drive control method for a motor in a centrifugal separator comprises: a first feeding step for feeding an AC ...
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JP5661352B2 |
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JP5644184B2 |
There is provided a single-phase AC synchronized motor that does not need smooth of rectifier waves but stably performs shift from a starting operation to a synchronized operation. In the motor, based on detected signals of a position se...
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JP3194479U |
To provide a circuit for the purpose of miniaturization of a switch for controlling a starter for an electric motor. When a switch 8 with a current limiting resistor R is connected in parallel with a switch 5 for controlling an intermedi...
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JP5618690B2 |
To provide an electric rolling stock control device that can start an inverter for controlling a motor stably, even when the motor rotates at a very low speed in speed sensorless control.An electric rolling stock control device 10 employ...
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JP2014185817A |
To prevent an earth leakage breaker from malfunctioning.A motor starter circuit 9 is used for starting a single-phase induction motor 3 that drives a refrigerator compressor 3 and that includes a starting coil 4 and a main coil 5. Furthe...
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JP2014165278A |
To prevent occurrence of trouble in electronic component mounting work by making a drive motor of large torque available while shifting the timing to start drive motors.After starting driving a Y-direction motor 9, a control device 15 ma...
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JP2014155322A |
To provide a motor drive circuit capable of reducing a starting current when starting a motor and applicable to various motors while suppressing substrate manufacture cost and a substrate packaging space.When power supply from a DC power...
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JP5572528B2 |
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JP5558125B2 |
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JP5548777B2 |
A rotor position detection unit (11) provided in a synchronous machine starting device includes a timing detection unit (21) for outputting a first position signal indicating a timing at which a value of an armature voltage of a synchron...
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JP5534935B2 |
In a rotation sensor-less control device that controls an inverter (1) that drives a synchronous machine (2), a rotation sensor-less control device according to one embodiment comprises: a phase angle/angular velocity inference section (...
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JP5537123B2 |
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JP5516087B2 |
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JP5514826B2 |
A synchronous-machine starting device for starting a synchronous machine (4) including an armature (ATU, ATV, ATW) for generating a rotating magnetic field and a rotor (RT) generating a fixed magnetic field by being supplied with a field...
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JP5502895B2 |
A method and a device for monitoring the startup of an electric drive, which has a polyphase machine, a pulse-controlled inverter and a control unit. The control unit is provided to compare rotational speed values that are successive in ...
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JP5497878B2 |
A motor starter module is provided, the module according to the present disclosure including a PCB (Printed Circuit Board) substrate configured to communicate with and control the magnetic contactor, a mechanism part operating in associa...
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JP2014093941A |
To provide a method for starting a synchronous motor which prevents thermal damage to a damper winding.Provided is a method for starting an electric motor, the motor having a main machine 14, an exciter 16, and a permanent magnet generat...
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JP5491503B2 |
A method and device for controlling the starting time of a vehicle mounted thermal engine coupled mechanically to a polyphase rotary electrical machine with an inductor. The electrical machine includes phase windings and sensors for the ...
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JP2014066912A |
To provide an image forming apparatus and the like which can ensure a stability of operation and can reduce a load of software.In an image forming apparatus 10, a processing control part 101 of a control part 100 comprises: a first motor...
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JP5467848B2 |
A low cost motor starter is shown having a PTC resistor 12 serially connected to a triac 14 and a bias resistor in turn adapted to be connected to the start winding of a single phase motor. A reed relay 16 having a sense coil 16a seriall...
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JP2014507107A |
The present invention relates to a starting device for a single-phase induction motor, comprising a stator (M) with an running winding (B1) and a starting winding (B2), a starting device (28) connecting the starting winding (B2) to a sou...
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JP5433153B2 |
To remove an oil separator from an air conditioner and thereby reliably start a compressor even though a request torque is increased when the compressor is started. A motor controller 1 controls a motor 7 for driving a compressor. The co...
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JP5436476B2 |
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JP5427189B2 |
In a synchronous machine starting device, an AC voltage detection unit (8) detects AC voltage supplied to an armature of a synchronous machine (4) through an electric power line (LN) from a power conversion unit (71). The AC voltage dete...
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JP5420218B2 |
A field-oriented control method for an electric drive comprising a plurality of electric motors, for implementing a tension mechanism, especially for load cable and/or gearing means, using measurements of a polyphase motor actual current...
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JP5419388B2 |
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JP5421287B2 |
A synchronous-machine starting device includes an induction voltage operating unit (61) calculating an induction voltage induced to an armature of a synchronous machine based on an estimated phase representing a position of a rotor, an e...
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JP5419389B2 |
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JP5406485B2 |
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JP5409644B2 |
A synchronous machine starting device includes a power conversion unit for converting supplied power into AC power and supplying the AC power to an armature of a synchronous machine (4), an AC voltage detection unit for detecting AC volt...
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JP5405003B2 |
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