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JP4076292B2 |
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JP4074435B2 |
An improvement in a starting system for an electric motor, which drives a hermetic compressor of refrigeration and comprises a main winding (1), and an auxiliary winding (2), which are energized by an electric current source (3), through...
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JP2008079390A |
To provide a motor controller, a document scanning device, and a motor control method wherein when acceleration is started when a motor is at a stop, erroneous detection due to chattering can be prevented.The motor controller includes: a...
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JP4068435B2 |
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JP4062572B2 |
A floor cleaning apparatus driven by a switched reluctance drive that is soft-started to avoid any transient torque reaction disturbing the body of the cleaner. The soft-start is produced by profiling the current demand for the drive sys...
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JP4060429B2 |
To prevent a switching element for constituting a power-converting device from being damaged, and at the same time to suppress vibration on activation. In an air conditioner where a compressor is driven by a power- converting device whos...
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JP4057838B2 |
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JP4056451B2 |
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JP4057753B2 |
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JP4053511B2 |
A vector control device of a winding field type synchronous machine with which even when voltage changes caused by resistance voltage falls and inductance fluctuations due to armature current occur the armature voltage is controlled exac...
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JP4052080B2 |
A vehicle and method of operating a vehicle including a motor that supplies a driving force to a wheel, a battery that supplies electric power to the motor and receives regenerative electric power from the motor and a controller that det...
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JP4051646B2 |
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JP2008043017A |
To provide a Kondorfer starting device for an electric motor that suppresses low effectively a neutral point open-circuit voltage of a shunt winding of an autotransformer and that can miniaturize switches for the shunt winding by simply ...
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JP2008043018A |
To provide a starter of a three-phase motor that can prevent the occurrence of a large surge voltage or an inrush current and that can achieve miniaturization, weight reduction, and cost cut.This starter, which starts the three-phase mot...
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JP4051383B2 |
A planar motor is controlled by supplying a three-phase alternating current to a coil assembly. Each phase is supplied to one of three coils. The coils are positioned in a magnetic field generated by a magnet plate having alternating mag...
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JP4041981B2 |
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JP4040282B2 |
To drive a motor, without using a large output type thermal power generation unit. A voltage of a power generated by a thermocouple 35 is stepped up by a first step-up circuit 36, in which a voltage is induced in its coil L2 by the on/of...
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JP2008011625A |
To provide a speed sensorless vector controller which can achieve quick and smooth start, and to provide its control method.The speed sensorless vector controller comprises a current controller 3, a PWM control inverter 2, the same dimen...
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JP4031880B2 |
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JP4030571B1 |
An inexpensive, productivity-enhanced single-phase AC synchronous motor in which stabilized synchronous pull-in can be carried out by suppressing generation of counter torque during a starting operation. Starting operation is performed w...
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JP4028466B2 |
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JP4025216B2 |
An uninterruptible power supply apparatus is equipped with a power supply input section a 2 and a power supply input section b 3 that receive two systems of power supply, respectively; a power supply output section a 4 and a power supply...
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JP2007536146A |
A mechanism for a vehicle seat is includes a seat bottom supported by the vehicle and a seatback coupled to the seat bottom. The mechanism includes a first adjustment mechanism connected to the vehicle seat and operable between a locked ...
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JP4020100B2 |
A motor driver circuit according to the present invention comprises an edge signal generation means for generating an edge signal indicating the timing of phase-switching according to the values of a plurality voltages induced when drivi...
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JP4020746B2 |
To provide a charging type vacuum cleaner of a low cost, a small size, and convenient usability, and preferably, whose suction power by an electric blower is kept steady. The electric blower 10 of the vacuum cleaner is pulse-driven in a ...
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JP2007309237A |
To provide a hermetic electric compressor capable of positively displaying a protection function. The hermetic electric compressor is provided with an electric element, a compression element driven by the electric element, and a protecti...
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JP2007308231A |
To safely release a brake when the position of a motor magnetic pole specified, particularly, even when the malfunction of an inverter device is detected or multiple motors are selectively driven by one inverter. As shown in Fig. 1, the ...
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JP2007300779A |
To reduce the capacity of the circuit breaker, by increasing a resistance of a resistor connected to a circuit breaker in series so as to reduce an inrush current in an induction machine, in other words, by increasing a resistance betwee...
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JP2007300767A |
To provide an AC generator and motor drive system for vehicle, in which current flowing in a switching element can be controlled to the allowed value of the element, and an engine can be started by only a 180° conduction angle control m...
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JP2007300775A |
To provide a solution for enabling a 3-phase alternate current motor to restart after a power failure occurs. Detection is attempted repeatedly at certain intervals decided by a timer means after a power failure occurs until backstop pre...
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JP2007293532A |
To provide a multi-axis motor controller and a computer program achieving a small-size compact power supply device without any reduction in processing speed of a machining tool. Rotation commands to a main axis control means and a plural...
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JP4005256B2 |
A wiper blade (1) wipes over a predetermined range of a front windshield in response to rotation of a wiper motor (5) in a forward and reverse directions. The wiper blade operates in a wiping range between a predetermined upper reversing...
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JP2007288874A |
To obviate the necessity of providing another container at initial mixing of an electrolyte, and also to obviate the necessity of performing the injection work of an electrolyte into the main body of a liquid resistor many times, and to ...
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JP3998395B2 |
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JP3993502B2 |
In start-up control of a motor in which currents are caused to flow through any two of three phase coils to detect the polarity of a voltage induced in each de-energized phase, thereby determining the corresponding energized phase at sta...
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JP3987976B2 |
In operating to open or close a door (step S 1 ), when an outside switch indicating whether a door knob portion is grabbed or not grabbed by the hand of an operator is brought into an ON state (grip state), or when a distance of moving t...
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JP2007259547A |
To elongate the life of a switch, concerning the control of a power converter, especially, the changeover of the switch for switching two kinds of rectifier circuits. A decision part 22 gets, before start of a motor 13, the efficiency η...
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JP2007259524A |
To provide a controller of a single-phase induction motor for simply implementing control, and inhibiting an increase in device cost when the single-phase induction motor is controlled and mounted to one body in a device having two bodie...
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JP2007259546A |
To raise energy efficiency, concerning a motor starter. A motor starter, which has a main winding and a sub winding, is equipped with a first positive characteristic thermistor, a semiconductor switch which is connected in series with th...
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JP3985673B2 |
A direct current shunt motor (DCSM) (1) and first (6) and second (7) on-board batteries start an internal combustion engine (ICE). Under normal start-up conditions an electric current is fed to an armature (10) and to an exciting coil (1...
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JP3981669B2 |
Provided is a motor having a combination of a plurality of coil pairs and a permanent magnet, wherein these coil pairs are supplied with an excitation signal from a drive circuit so as to be excited at alternate opposite poles, and the p...
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JP3983591B2 |
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JP2007527189A |
A synchronous induction motor has a stator having a main winding and an auxiliary winding; a rotor having a yoke, a permanent magnet embedded in the yoke and a secondary conductor provided in the vicinity of periphery of the yoke; and a ...
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JP3971741B2 |
To further precisely detect the magnetic pole position of a synchronous motor without the need for knowing in advance characteristics of a machine such as friction, and characteristics of the motor such as saliency and magnetic saturatio...
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JP3964185B2 |
To provide a network control system of a motor in which the wiring length of a feeder cable can be reduced and a motor or an inverter can be replaced without having any effect on other motor unit. A feeder cable 7 and a communication cab...
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JP3953189B2 |
To enable a position estimator to estimate the direction of a permanent magnet even if a phase error is outside a specific angle range, by correcting the direction of the permanent magnet being estimated by dq axis judging equipment and ...
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JP2007195383A |
To enable low-speed start-up of a motor by phase control. A setting device is provided for setting starting torque at rotation start of the motor. A voltage subordinate to the starting torque is used as a voltage to be supplied to the mo...
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JP3951195B2 |
To drive a synchronous motor accurately and optimally, by storing optimum initial-phase correction quantity at a time when a moving section is placed at the position of a limit switch detecting to reach a movable limit of the moving sect...
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JP3951201B2 |
To facilitate the start of an AC motor and save a power consumption in a start-up stage. A voltage and a frequency applied to a three-phase AC motor 2 at the time of start are reduced. A motor-on signal is generated by a microcomputer 4 ...
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JP2007185290A |
To automatically, easily and accurately interrelate first and second starting command means connected to a sewing machine with first and second starting control parts when the sewing machine has a universal control device with first and ...
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