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JP6818155B2 |
The present invention drastically reduces the amount of data by treating current flowing through an AC electric motor as a DC amount. The present invention also performs, in a monitoring device, edge processing for determining an abnorma...
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JP6814830B2 |
A control system includes a power inverter configured to convert direct current (DC) power into alternating current (AC) power, an electric motor configured to be driven using the AC power output by the power inverter, and a controller c...
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JP2021001595A |
To provide a technology for operating a compressor more efficiently than before, while suppressing vibration.An air conditioning system is provided which includes a compressor 40, and a control part 605 for controlling the rotational fre...
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JP6806105B2 |
To provide an electric motor starting device improved in such a manner that an inverter capacity of a power conversion device to be used for starting an electric motor can be reduced.When starting of an electric motor 14 is started, a co...
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JP2020205718A |
To calculate the offset amount of an angle sensor with a load connected to a motor.A motor control device according to an embodiment includes a current instruction unit and an offset amount calculation unit. The current instruction unit ...
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JP3229725U |
To suppress a fluctuation of a rotation speed by attaching an encoder to a rotation shaft in order to suppress a temperature rise of the rotation speed, although the rotation speed of the wire feeding device increases with a temperature ...
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JP2020198707A |
To provide a drive controller stopping a motor in the event of an over-current state and a motor device by minimizing the number of components.A drive controller of a motor driven by an inverter part 3 comprises a control circuit 4. The ...
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JP2020198743A |
To provide a rotary electric machine capable of further reducing torque ripple.In a rotary electric machine 1 of concentrated winding, the number of slots S is 6n (n is an integer), n>2, and the number of poles P is an even number of 4n<...
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JP6796726B1 |
The resolver signal processing device of one aspect of the embodiment includes a deviation calculation unit, a PI calculation unit, and an integration calculation unit. The deviation calculation unit multiplies the first product obtained...
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JP6781855B1 |
To provide a computer program capable of solving a nonlinear voltage equation and simulating the dynamic behavior of an electromagnetic component without performing iterative calculation. This is a computer program for causing a computer...
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JP6769246B2 |
To provide a motor control apparatus which can secure a stable current responsiveness according to individual variation and long-term deterioration.A current feedback calculation unit 43 of a motor control apparatus 10 calculates a comma...
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JP6765099B2 |
To provide a driving device which allows for improvement of the accuracy of drive control, and a robot.A driving device 1 comprises a motor (rotationally driving part) 3 provided in a motor housing (base body) 2 and having a motor shaft ...
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JP2020162345A |
To obtain a low-cost skew structure in an electric motor system.An electric motor system adopts at least one of a first configuration and a second configuration: in the first configuration, by shifting a phase in the circumferential posi...
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JP6762825B2 |
To provide a motor control device which realizes reduction of power consumption and reduction of cost of a vehicle.A motor control device comprises: a main inverter circuit INV that is connectable with a motor 1; a torque detector 5 that...
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JP6759376B2 |
The present invention relates to an inverter-controlling device. The inverter-controlling device include a main controller configured to generate a predetermined command current; a comparison module configured to calculate a difference b...
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JP6756568B2 |
To provide a control device having a higher control performance.A control device 1 is a control device 1 that, on the basis of a dual inertia model resembling a mechanical system 2 formed by connecting a motor and a load with a connectio...
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JP6752871B2 |
To solve the problem in which, if an order of a digital filter is increased when a frequency of a harmonic component included in a detected current value of a drive current changes, an amount of memory used increases, and as a result, co...
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JP6751615B2 |
An object of the present invention is to provide a motor system configured to automatically damping tuning without increasing processing loading of a CPU. A velocity loop gain m1 of the motor system 1 is can be simply calculated through ...
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JP6750707B1 |
To improve the stability of current control in a motor drive device by being able to converge on a torque command input from a higher-level control in a steady state, easily mounting a low-order model. In a speed control unit 1, a detect...
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JP2020125863A |
To restrain an increase in a circuit voltage caused by generation of a regenerative voltage.An air conditioner according to an aspect of the present invention comprises: a heater for preventing performance degradation of the air conditio...
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JP6736991B2 |
To provide an electric-vehicular control method and an electric-vehicular control apparatus, which improves a retardation in acceleration in a dead-zone interval.A control method for an electric vehicle 10, the method for use in setting ...
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JP6731700B2 |
To improve a problem in which, when a large reluctance torque is generated, an unstable state is brought about caused by a slight variation of a torque or speed.The electric motor is treated by being converted to an equivalent circuit ha...
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JP6728424B2 |
There is provided a method for controlling a motor in an elevator system. In this method, a time duration to a time-point at which a car stops is determined using an actual speed of the motor and a predetermined travel distance. Then, a ...
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JP2020108294A |
To suppress noise generated from a motor.A vehicle driving device includes: an inverter 12 for transmitting and receiving power between itself and a motor 14 for driving a vehicle; and a control section 10 for controlling the inverter 12...
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JP6720714B2 |
To provide a control method for an electric vehicle and a control apparatus therefor, which enable suppression of a vehicular behavior giving discomfort to a driver by reducing an overshoot in a torque response of the drive shaft of the ...
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JP6716993B2 |
To improve the temperature estimation accuracy of a permanent magnet.A magnet temperature estimation method estimates the temperature of the permanent magnet in a motor, which includes a stator having a coil and the permanent magnetic an...
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JP2020096407A |
To improve accuracy in a load state determination.An angular velocity of a rotor and an induction voltage are calculated from a drive current value of a motor, and a ratio of an induction voltage constant Ke which is calculated therefrom...
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JP2020096424A |
To provide a refrigeration cycle device capable of stably driving a motor for a fan without providing an electrolytic capacitor for smoothing.A refrigeration cycle device of the embodiment includes: a heat exchanger in which refrigerant ...
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JP2020096438A |
To suppress, while suppressing the deterioration of system efficiency, a feeling of sound fluctuation caused by electric motor noise when a vehicle is accelerated and decelerated, and the shifting of a stepped transmission occurs multipl...
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JP6711746B2 |
Provided is a motor control device which can accurately perform velocity control over a sliding door. The motor control device has a control unit which determines a command value for a duty ratio such that a moving velocity of the slidin...
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JP6711255B2 |
In an apparatus, an execution determiner determines, for each of sequential first and second motor control cycles, whether to execute a voltage correction task for a voltage command, and obtains, for each of the first and second motor co...
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JP6711326B2 |
A rotating electric machine drive system includes: a rotating electric machine equipped with: a rotor having one magnetic pole configured by permanent magnets, and a salient pole portion that is magnetically convex in a radial direction;...
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JP6711064B2 |
To provide a technique for enabling the suppression of a reduction in a disturbance suppression effect due to an influence of a communication delay between plural controllers even in the case of executing stoppage control using the respe...
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JP6707151B2 |
An object of the present invention is to effectively reduce vibration or noise caused by a motor. An inverter circuit 300 generates an alternating current from a direct current supplied from a direct current power supply 10 by using a pl...
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JP2020089125A |
To perform comparison of a calculated value of a power factor angle without assuming that the magnitude of a current is compared with a predetermined value.A device 2 includes a comparator 201 and power factor angle calculators 202 and 2...
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JP6702085B2 |
To provide methods and devices of controlling electric vehicles that can prevent the erroneous correction of a torque command caused by a steady error in the detection of the rotation speed of drive wheels.Before a torque target value To...
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JP6698943B2 |
A control device for a motor includes: a power converter (4) configured to control upper switching elements and lower switching elements to turn on and off in accordance with a drive command from a current control unit (3), to thereby su...
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JP6693442B2 |
To suppress variation in output torque of a motor due to disturbance, while preventing rapid change in the output torque of the motor when switching between a rectangular-wave control mode and another control mode.When an inverter is con...
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JP6688452B2 |
To estimate a state of a wheel by detecting an angle on the motor side or estimate disturbance to be applied to the wheel to suppress the disturbance.A motor controller for controlling a motor 3 connected, via an elastic body 7, to a sha...
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JP6688247B2 |
In a rotary electric machine, a rotor, and a stator. The stator includes slots provided in a circumferential direction thereof, and stator windings wound in the slots. The stator windings include n groups of three-phase windings, where n...
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JP6686658B2 |
To provide a technique for enabling a response of drive shaft torque in a gear backlash section to be quicken even in the case of a target torque instruction value increasing gradually in a scene where a vehicle accelerates gradually fro...
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JP6679334B2 |
To provide a power generation device with improved reliability.A transmission 106 is connected to a rotary shaft of an engine 102 and a rotary shaft of an electric assist motor 104 and transmits torque to a load 200. An engine controller...
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JP2020058113A |
To provide a power supply system in which a fluctuation of a current in a capacity-type battery generated while the capacity-type battery and a power-type battery are connected with each other via a current wire can be minimized.The powe...
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JP2020058111A |
To provide a method for controlling a current detection circuit of a motor control device such that torque ripples caused by current gain imbalance and deviation in the current detection circuit are reduced.Primary control of a current g...
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JP6678777B2 |
A control apparatus of a synchronous motor with a load commutated inverter includes a positive/negative judgment unit for discriminating positive/negative of the motor voltage of each phase of the three-phase AC input of the synchronous ...
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JP6674420B2 |
A motor driving control device includes a motor driving unit to drive the motor, a rotational position detecting circuit for generating rotational position information, and a controller. The controller outputs, to the motor driving unit,...
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JP6671516B2 |
A motor drive device (2) is provided with: a single phase inverter 11 for applying an AC voltage to a single phase motor (12); a position sensor 21 attached to the single phase motor (12) and detecting the rotor rotational position of th...
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JP2020043665A |
To provide an electric actuator capable of performing high-speed and precise positioning and an electric brake device.A controller 2 of an electric actuator DA includes a power running regeneration determination unit 26 and an output res...
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JP6665570B2 |
To provide a control device for an AC motor and a control method for an AC motor capable of setting a torque boost voltage value while preventing a type of an AC motor to be controlled from being limited.A control device 100 of an AC mot...
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JP6666126B2 |
To solve the problem that a torque ripple correction amount cannot be accurately calculated at high speed.A control device 1 having a torque ripple correction function, comprises: a rotation angle detector for detecting the rotation angl...
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