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JP2003189649A |
To suppress a starting current at the start of a cage type induction motor with a simple circuit configuration.In order to reduce the starting current that flows through a current path between a primary coil of a cage type induction moto...
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JP3422101B2 |
PURPOSE: To provide a method for positively controlling the activation by controlling the speed sensorless vector of an induction motor or the re-activation when instantaneous power failure recovers. CONSTITUTION: A selection switch 25 i...
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JP3419589B2 |
PURPOSE: To prevent unnecessary function of a motor protection relay by suppressing saturation of a current transformer due to the DC component of surge current at the time of starting a motor. CONSTITUTION: A current transformer 3 conne...
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JP3416238B2 |
PURPOSE: To provide a positive temperature coefficient thermistor device provided with a spring terminal which is not deformed even when the specific force or higher is added. CONSTITUTION: Curved spring parts 13, 14, 23 and 24, with whi...
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JP3416239B2 |
PURPOSE: To provide a PTC starting device with which the power consumption of the PTC in operation can be reduced in a PTC starting compressor. CONSTITUTION: The case of a PTC starting device is formed in a double wall structure consisti...
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JP3415417B2 |
To accelerate smoothly a brushless DC motor which rotationally drives a varying load with a small starting current. Before the start of a brushless DC motor 1, a voltage is applied to the motor 1 under the control of a voltage control ci...
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JP3414974B2 |
To realize a starting device for a motor, in which the fluctuation of a soft start time due to the dispersion of parts is suppressed and the rise time of the motor can be set freely. A pulse signal output from a comparison circuit A1 is ...
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JP2003164196A |
To provide a test method for a thyristor starting device, which confirms a start in the normal revolution direction easily, only with an electrical method preliminarily on site, when starting a generator-motor.This is the test method for...
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JP3412310B2 |
PURPOSE: To provide a control center for electric motor in which the setting of a starting method or the determination of correction as to whether there is an error or not in a main circuit constitution is performed in the stopping state...
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JP2003153589A |
To solve the problem of a textile machine having a plurality of spindles being started/stopped individually that noise due to belt driving is significant when the drivers of respective spindles are operated synchronously using a timing b...
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JP3406834B2 |
To provide a motor drive circuit in which the number of required realys is reduced, which is made lightweight and whose low costs are realized. The common contact 5a of a power supply circuit relay 2a is connected to the common contact 1...
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JP2003143881A |
To provide a start controller for synchronous motor which is capable of synchronizing a synchronous motor with reliability.The start controller for synchronous motor is for controlling the excitation of a synchronous motor at start. The ...
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JP2003134864A |
To enable application of a large capacity motor-driven blower to a site, such as a tunnel in a mountain, etc., where power supply availability is not satisfactory by a method where the starting current of the motor-driven blower is subst...
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JP2003134865A |
To surely start a fluid transfer apparatus employing a self-starting synchronous motor, and to easily pull the synchronous motor into a synchronous operation again, even if the synchronous motor goes out of synchronous operation.In this ...
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JP3402949B2 |
To quickly and smoothly start and stop a motor by controlling the switching of on/off of a high-voltage tap, a low-voltage tap, an output-input switch, and a by-pass switch at the time of starting and stopping the motor. When a motor 6 i...
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JP3400436B2 |
To provide a method for aligning rotors of a switched-reluctance motor(SRM) capable of reducing noise that occurs at an initial time of aligning the rotors and also reducing the startup time of the motor, and to provide a SRM driving cir...
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JP2003120186A |
To provide a low-cost cutter motor driving device for a tunnel excavator and a method for it causing no disturbance in the case of a failure of an inverter.This tunnel excavator is provided with a cutter head turning by using a cutter tu...
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JP3398814B2 |
To provide a startup circuit which reduces a surge current, when a motor is started and which can respond to market demands with respect to electromagnetic interference, abnormal sounds or the like. In this startup circuit (an inductive ...
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JP3396916B2 |
PURPOSE: To provide a controller for regenerative DC series motor in which surge current can be reduced upon throw-in of a power supply contactor while avoiding complication of circuitry and increase of size. CONSTITUTION: Upon turn ON o...
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JP3396459B2 |
To provide a motor starter which saves an installation space and has a simple structure for assembling. The motor control circuit is mounted on a printed circuit board except the main circuit apparatus, terminals of each circuit element ...
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JP2003111460A |
To obtain a fan motor provided with a switching noise blocking capacitor being driven through a rectified power supply circuit in which the surge current can be reduced at the start of the fan motor.An MOS-FET is connected between a powe...
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JP2003100191A |
To provide a device for embedding a circuit breaker in a board panel capable of reducing cost for an elastic member for attaching and detaching a decorative cover.The device for mounting a board of the circuit breaker with the circuit br...
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JP3392623B2 |
To efficiently execute printing by reasonably using a DC motor even when the DC motor is a small and low cost one having a low torque by a method wherein a pulse signal of a driving signal of the DC motor is changed to a continuous DC si...
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JP3391493B2 |
PURPOSE: To enable start up of a motor normally by generating a drive signal, regardless of the detection of position of a rotor when the rotor is not rotated in an initial stage of start-up. CONSTITUTION: In the case that a rotor stops ...
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JP3389516B2 |
To improve operability by exciting a solenoid switching valve to unlock with the logical product of a contact signal for unlocking a hydraulic operating system and a self-holding contact signal, in order to operate the hydraulic operatin...
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JP2003088149A |
To reduce troubles when a motor is started regardless of a change in a lubricant temperature or the ambient temperature of the motor.A geared motor with an inverter is coupled with a gear unit 1, has an inverter 30 as a speed control mea...
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JP2003088178A |
To provide a gear motor with inverter wherein dedicated communication equipment for transmitting information from various sensors is unnecessary.An inverter 30 incorporates a communication circuit 36 for communication with a controller 8...
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JP2003079168A |
To provide a starter for single-phase induction motor which is not burnt even at starting failure, is free of troubles due to dust, and is small-sized and inexpensive.The starter is provided with an electronic switch which disconnects a ...
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JP2003070289A |
To obtain a high output DC motor drive circuit for motor lift or the like, in which a relay of smaller switching capacity can be used.A forward relay coil RC1 and a reverse relay coil RC2 on the DC power supply side are connected in para...
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JP2003056251A |
To provide a motor controller capable of surely deciding an emergency such as an insertion or the like by using the number of revolutions of a motor converted into a torque value. The motor controller 1 is so constituted that a voltage o...
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JP2003052186A |
To provide a method of operating a reluctance motor which can cope with a wide use capable of self start, and to provide its device. In the method of operating a reluctance motor, which is equipped with a stator, where the three-phase wi...
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JP3375285B2 |
To provide a start/stop circuit that can start and stop every drive of an electric motor and an engine with a common switch. In a machine that can be driven by an electric motor and an engine, relay circuits are provided between an AC po...
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JP3375152B2 |
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JP3373769B2 |
To provide a controller which starts a load smoothly without causing an overshoot and, further, starts the motion of the load in a short time after the starting operation. A driving speed is detected by a detected speed operation unit 11...
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JP3374489B2 |
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JP2003026375A |
To suppress noise emission when an operation stopping command is issued in the condition that a mechanical brake is applied while an elevation machine is at a standstill.A speed regulator 8 emits a torque command value τ** on the basis ...
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JP2003013664A |
To promote accuracy of decision on lock, insertion or the like when a power window is driven.A load controller includes a second comparator IC2 deciding threshold value for controlling an operation of a motor circuit M based on current v...
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JP2003009559A |
To provide a driving apparatus that is prevented from causing output torque shortages even when the apparatus is combined with an inexpensive single phase-three phase conversion module by using a three-phase induction motor capable of se...
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JP2003003743A |
To provide a driving controller surely stopping an open-close body at a target place without influence of fluctuation of the state of the operation of a motor and without bringing the motor to a locked state.A CPU 11 computes an upper-en...
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JP3361952B2 |
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JP2003500999A |
A method for starting an open-loop vector control of a synchronous machine by determining a stator inductance model of the machine; measuring the stator iductance in a plurality of directions; arranging the measured inductances in the mo...
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JP3361231B2 |
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JP3361950B2 |
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JP2002374688A |
To provide a submergible pump the motor of which is simplified in constitution and reduced in size, so as to save time at the maintenance of the motor and can be made to generate a high rotation torque when the pump is started and the ro...
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JP3359658B2 |
PURPOSE:To provide a smooth starting by detecting a traveling period from the time when an elevator starts to the time Men it attains prescribed speed, and adding a frequency signal suited to the load of the elevator to a torque command ...
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JP3358666B2 |
PURPOSE: To obtain a synchronous motor having no brush for DC energization, requiring no complicated constitution and being high in starting torque in the same way as induction motor and capable of self-starting. CONSTITUTION: A stator s...
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JP2002369563A |
To provide a starting apparatus of a poly phase induction motor for also contributing to energy saving by achieving a reduced voltage starting by a relative simple circuit configuration. While a reduced voltage starting period passes aft...
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JP2002362250A |
To provide a molding mounting device and a molding clip that easily mount and remove a molding and require no specific shaped glass spacer. The molding clip 6 is fixed adjacently to a clearance between the peripheral edge of a window gla...
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JP3357851B2 |
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JP3357697B2 |
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