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JPH10313586A |
To make it possible to easily pull the rotor of a brushless, sensorless DC motor into the synchronized state when the motor is restarted, thereby reducing starting time and starting the motor always in the normal direction of revolution....
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JPH10313561A |
To provide a synchronous motor, which can switch the motor to the synchronous operation stably without the fluctuation in contact point to the sliding ring of a brush even if the brush is abraded. Each brush is guided with a guide 24 pro...
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JPH10313562A |
To provide a bipolar synchronous motor, which can increase the rotation of a motor to the vicinity of synchronous rotation smoothly without generating one current in one direction stopping one rotation of the motor in a rectifying circui...
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JPH10313580A |
To prevent the generation of starting noise due to the fluctuation of speed from by detecting the output pulse of a pulse generator, and by providing a means for turning off and on the connection between an auxiliary coil winding and a p...
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JPH10309938A |
To automatically open a window by providing a controller for generating an open drive signal for normally rotating a motor according to an opening instruction signal imparted from an open switch and a liquid detection signal imparted fro...
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JP2823554B2 |
To provide an opening/closing device having quick response and capable of preventing a pinching accident of an object. This window glass opening/closing device is provided with an inversion instruction generator 24-1 feeding the inversio...
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JP2823553B2 |
To prevent a pinching accident of an object by providing a reverse motion command generator to open a window glass by reversing a motor when the output of a speed change operator exceeds the set value when the window glass is not in the ...
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JP2823540B2 |
PURPOSE: To avoid the damage of a held body by detecting holding before the revolution of a motor and lowering a window glass when the body is held between a window frame and the window glass. CONSTITUTION: When a window glass 16 is plac...
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JP2823541B2 |
PURPOSE: To avoid the damage of a held body by detecting holding before the revolution of a motor is stopped and lowering a window glass when the body is held between a window frame and the window glass. CONSTITUTION: When a window glass...
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JPH10295091A |
To obtain an apparatus for guaranteeing the level of residual magnetic flux of the magnetic field of a stator by constituting a damping circuit which is arranged between a power source and an operating winding, including a switching circ...
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JPH10511537A |
The method for starting the synchronous machine comprising rotor and stator with windings requires knowledge of the initial position of the rotor w.r.t. the stator. The method involves a first step of determining the vector sum of a seri...
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JP2817488B2 |
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JP2818508B2 |
In a hand-held electronic apparatus, such as radio display pager, a control circuit is powered by a first battery to produce an control signal for operating an inductive device such as vibrator. A second battery is provided having an int...
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JP2816263B2 |
The purpose of this invention is to provide secondary resistance low temperature compensation in vector speed control at values that are close to the actual secondary time constant even at startup of the motor when the secondary time con...
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JPH10271863A |
To surely switch the operating state of a motor at the time of starting the motor, by switching the operating state of the motor to a delta operating state from a star operating state when a motor switch operation discriminating means di...
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JPH10271871A |
To reduce the power from a solar battery and a battery, and, at the same time, to quickly charge the battery by controlling the number of revolutions per unit time of a motor which is driven with the electric power form the solar battery...
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JP2809581B2 |
PURPOSE: To obtain a controller which can stably execute switching from the vector control of pump-up start operation to V/F control and from pump-up start operation (V/F control) to pump-up operation in a pumped storage power station. C...
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JP2804796B2 |
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JPH10262384A |
To set a starting voltage as an optimum value by adding a voltage drop to an initial voltage, outputting a voltage set at starting time, automatically setting a voltage value set for the starting time, and starting it. A V-F converter 6 ...
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JPH10257795A |
To obtain a motor control circuit that can change the speed or the torque of an induction motor against load fluctuation. A plurality of series circuits consisting of photo triacs PTa-PTc and starting capacitors 3a-3c are connected to a ...
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JP2799027B2 |
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JP2799204B2 |
A motor protector (14) and starter (16) particularly suited for refrigeration compressor motors are mounted in the recess (32.6) of a first housing portion (32) with their resilient female sockets disposed in alignment with a pin receivi...
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JP2798033B2 |
To enlarge the application of induction motor while enhancing the operational efficiency and saving power by improving the starting and operating characteristics of induction motor. The induction motor driver comprises two rotors 9 where...
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JPH10248280A |
To provide a motor control-data output circuit capable of simultaneously driving a plurality of motors without causing a delay time. An address selector 4 is accessed by the information of an address but 2 during transmission from a data...
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JPH10248219A |
To make it possible to reduce the density of magnetic flux of the magnetic field of winding by providing a configuration in a which a tap lead wire can be drawn from the middle of the number of turns of a coil of armature winding and by ...
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JPH10243672A |
To rotate a generator for blow as usual even if the room temperature is low, by applying DC voltage to an AC motor for blow, before start of combustion of a burner. When an operation switch is turned on, a carburetor 5 is heated. When th...
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JPH10234197A |
To change rotational speeds into tens of times the starting rotational speed by detecting positive and negative counter electromotive forces generated at a motor terminal, compressing and magnifying the voltage signal of the counter elec...
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JPH10509017A |
An electric power starter/generator system for a turbine engine capable of transforming mechanical power from the turbine engine to electric power during a generate mode of operation and of transforming electric power from a low voltage ...
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JP2789920B2 |
PURPOSE: To realize positive starting performance by providing a start compensating means for forcibly starting an AC motor until a preset number of revolution is reached thereby avoiding erroneous detection of the number of revolution u...
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JP2792019B2 |
An electric apparatus for carrying out start-up control of a plurality of devices requiring start-up electric currents exceeding an amount of current required at ordinary states thereof. The apparatus has a power source, a signal generat...
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JPH10229686A |
To provide the starter of a synchronous generator which can improve reliability at the start of a plurality of synchronous motors, without enlarging the occupied space. Synchronous generators 8 are started individually, by outputting the...
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JP2578817Y2 |
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JP2786799B2 |
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JPH10201872A |
To improve reliability, surely drive a facility and reduce a starting current and the size of an emergency power source by using the specified number of pumps as motive force sources and connecting them through a time difference starting...
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JPH10201194A |
To realize long life without generating damage of a cooling fan, by applying a contactless contactor limiting the starting torque of a motor to the starter of an induction motor for driving the cooling fan. A three-phase AC power source ...
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JP2781512B2 |
A disk device, such as an optical disk or magnetic disk, for a computer is mounted on the computer or inserted in a slot in the computer. The computer or host device provides a power supply for the disk device that is used to drive the d...
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JPH10191561A |
To lock the start adequately in response to a permitted voltage value for each induction motor and a circuit voltage value during the start of the induction motor by locking the closing of a power source switch if the circuit voltage val...
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JPH10191699A |
To provide a turbine power generation facility which shaves a part or the whole of a starting device used to start a gas turbine with other facilities required to operate a plant, increases availability factor and utilization degree shar...
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JPH10180662A |
To efficiently perform breaking-in or warming up by measuring a current supplied to a motor, calculating a current effective value for the current and deciding a reproducing speed according the calculated current effective value as occas...
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JP2772432B2 |
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JPH10174275A |
To provide a motor starter for an electric circuit by providing it with an overload relay for generating trip signals as the functions of a current value that it has sensed, the first time constant, and the second time constant. A motor ...
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JPH10174392A |
To make the part between electrodes electrically open and interrupt operation, to the crack at the thermal runaway of a positive characteristic thermistor, in a starting device of a motor. A positive characteristic thermistor 1 is hold b...
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JPH10174475A |
To prevent generation of rheostatic brake torque by advancing on/off timing at operating time, related to on/off timing at starting time. In a three-phase SR motor, three rotational sensors are provided, a phase difference of a detection...
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JPH10174470A |
To provide a small-sized and light-weight driver suitable for driving the correction lens of a camera, for example. A lens-holding frame 11 is disposed between an upper moving frame 21 and a lower fixed frame 31. The lens-holding frame 1...
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JPH10174471A |
To realize a high-voltage synchronous pumped-storage power station in which the cost and the installation space of a starting circuit are reduced. When a generator motor 1 is employed for power generation and a generator motor 21 is empl...
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JP2768688B2 |
PURPOSE:To smoothly start a facility by starting a hydraulic machine, interposing a generator in an electric system, thereafter changing a time constant of speed control circuit at the point where the matching at the time of interposing ...
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JP2765728B2 |
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JP2761375B2 |
PURPOSE: To restart an induction motor quickly and smoothly by a method wherein power is fed temporarily after power interruption and then power supply from a power converter to the induction motor is interrupted again before the inducti...
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JPH10146063A |
To fix the time until an induction motor's start after switching an operation command from ON to OFF by equipping an inverter device with a command input time detecting means and a passage time judging means, and starting the processing ...
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JP2759391B2 |
PURPOSE: To reduce an electric power loss in staring the motor of an infusion pump by shortening a time elapsed until the determination of optimum and minimum necessary motor drive current. CONSTITUTION: A ROM 4 stores a table for starti...
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