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JP2010283908A |
To provide a drive circuit for stabilizing rotational speed of motors.A target rotational speed determination section 60 receives a pulse-modulated control signal CTL that has a duty ratio corresponding to a target rotational speed of a ...
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JP4598776B2 |
An induction motor (10) control-system (1) / induction motor (10) assembly, an induction motor control system (1), a method of controlling an induction motor (10), and a compressor controlled with an induction motor according to the teac...
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JP4595248B2 |
In an air conditioner including a control unit receiving a power from a switching power supply, the switching power supply is connected to a DC power source without passing through a switch device or power application device. The output ...
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JP4591949B2 |
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JP4557612B2 |
The arrangement has a switchable pole three-phase motor (2) with windings for at least two different drive speeds, with a pole changing element (5) connecting the motor to a voltage supply for changing between the motor drive speeds, whe...
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JP4549605B2 |
Disclosed are a power control apparatus and method thereof capable of controlling a load power by adjusting an AC power voltage supplied to a streetlamp, a computer system, and electronic equipment according to a load characteristic and ...
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JP2010206903A |
To obtain a fan motor connecting circuit that suppresses the occurrence of nonconformities caused by the generation of an inrush current without causing increase in the cost and size, and to provide a liquid-drop ejector.The fan motor co...
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JP4543497B2 |
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JP4543305B2 |
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JP4544884B2 |
In addition to the construction of a typical elevator control device in which power generated during regenerative operation is dissipated by a resistance chopper (18), an elevator control device is newly provided with: an electric double...
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JP4541022B2 |
The method involves applying voltage to the phase winding of a stator independent of the period of the movement of the rotor, and detecting peak of current waveform to determine the position of the rotor. Independent claims are also incl...
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JP2010193702A |
To provide an apparatus for controlling an induction motor, capable of being constructed at low cost and suppressing generation of an inrush current caused by star-delta switching.The apparatus for controlling an induction motor includes...
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JP2010530207A |
A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor al...
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JP2010193566A |
To provide a motor control device which can suppress a rush current at the start of a motor, and can restrain the impairment of a rise of the torque of the motor.An inverter control part 7 generates drive signals Pu, Pv and Pw for drivin...
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JP4531180B2 |
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JP4532547B2 |
A method is disclosed for operating a two-phase rotary current controller. In order to optimize the operation of a two-phase rotary current controller, magnitudes of a parameter that can be varied in both controllable phases of a two-pha...
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JP4521151B2 |
An electrical hand-tool device and start-up safety routine protecting against start-up blockages, in which an electrical motor is connected, for a short time span (T0), with the current supply at a determinable resistance. At least one o...
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JP4521577B2 |
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JP4516656B2 |
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JP2010166641A |
To solve the problem wherein the capacity of a common converter becomes large at the time of controlling a motor becoming a driving load at the time of regular driving and a motor becoming a regenerative load, by an inverter with the com...
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JP4514558B2 |
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JP4511219B2 |
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JP4509010B2 |
To provide a control unit, method and program for permanent-magnet synchronous motor, capable of smoothly starting up the permanent-magnet synchronous motor used for driving the compressor of an on-vehicle air conditioner. A synchronous ...
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JP3160946U |
To provide an overload protector capable of saving energy in a starting device by using a heater and a bimetal having the same specifications as a normal overload protector. A thermo switch unit that cuts off unnecessary current that con...
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JP4501493B2 |
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JP2010149276A |
To provide a robot device autonomously movable based on the states of the emotion and instinct of the robot device itself. This robot device 1 performs the motions according to the input information S1-S3 supplied thereto. The robot devi...
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JP4496779B2 |
A control apparatus for a synchronous motor such as a switched reluctance motor, having a plurality of respectively separate stator windings, can operate the motor in either a normal mode or a low-torque mode by selectively supplying dri...
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JP4491895B2 |
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JP4493784B2 |
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JP4488409B2 |
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JP4488415B2 |
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JP4480751B2 |
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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JP4475903B2 |
A motor control apparatus capable of easily and reliably determining the completion of starting of a synchronous motor and not requiring an arithmetic unit having high processing ability for the determination. When an operation command i...
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JP4477846B2 |
A method and circuits for improving the inductive DC converter delivery of regulated current into the load(s), where the inductive DC converter provides the output voltage to an ensemble consisting of the load(s) and a current source or ...
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JP4472123B2 |
The commutation poles (C1,C2,C3) and the current lines are arranged within the module housing to realise a motor control function of reverse, star-delta, or distributor type. The pole control unit constituted by an electromagnet (E1) and...
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JP4470093B2 |
A vehicle door driving system includes a driving power source for generating a driving force, a clutch mechanism adjusted to be engaged and disengaged, and controlling means for controlling the clutch mechanism to be engaged and disengag...
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JP2010104189A |
To provide an electric motor and a method of starting the electric motor.A prime mover 10 includes a motor, an air pressure motor, and a mechanical coupling section for operably coupling the air pressure motor to a rotor of the motor 18....
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JP4456360B2 |
An operation circuit for a work vehicle drives an electromagnetic actuator by generating an operation signal corresponding to a switch operation and drives a work actuator in response to the drive of the electromagnetic actuator. By inst...
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JP4459533B2 |
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JP4450445B2 |
To restart a torque control without relying on the judgment and operation of a train driver by providing an induction motor state detecting part which inputs a primary angular frequency and, if its absolute value is equal to or lower tha...
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JP4446955B2 |
After a power source is turned on, the motor stars by feeding a current to the auxiliary wiring for a first predetermined period. Then, a voltage induced in the auxiliary wiring is detected. Whether or not the detected inducted voltage i...
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JP4448300B2 |
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JP4436584B2 |
A combination includes a contactor and a soft starter. The soft starter is mounted on the contactor.
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JP4433149B2 |
A method for controlling an inverter controlled generator set which comprises a DC power source section having as a power source a generator driven by an engine and an inverter which converts an output of said DC power source section int...
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JP4426888B2 |
A signal processing apparatus of an electronic device not only cuts off supply of power to a hardware unit from a power supply unit when a control signal associated with a power OFF command is supplied from an instruction input unit, but...
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JP4427215B2 |
The system has an electric motor (23), a current sensor (42) and a controler (31) that measures at least one current parameter when the motor is supplied with current for leaving an end position, stores it as a reference parameter, conti...
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JP4421051B2 |
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JP4419517B2 |
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JP4422471B2 |
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JP2010041900A |
To provide an electric pump capable of switching the size of a torque generated in the electric motor without increasing the size of the electric motor, and to provide a method of operating the same.In an electric motor M of a vacuum pum...
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