Abstract: A magnet temperature estimating device for a motor including a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with a gap therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. Gaps adjacent to each magnet in a rotation direction of the rotor are formed in the rotor. The controller estimates a temperature of the magnet based on the induced voltage detected when the magnet opposes any one of the plurality of coils, according to the rotation of the rotor.

Abstract: A magnet temperature estimating device for a motor provided with a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with an aperture therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. The controller estimates a temperature of one of the magnets based on an amplitude of a frequency spectrum corresponding to a given frequency, among frequency components constituting the induced voltage.

Abstract: A friction engagement element control system is provided, which includes a friction engagement element including friction plates, which are an input-side friction plate and an output-side friction plate, and an actuation system configured to engage the input-side friction plate with the output-side friction plate with a pushing force, the friction plates having a characteristic in which a friction coefficient thereof decreases as a rotational difference between the friction plates increases. The device includes a controller configured to control the pushing force so that the negative slope characteristic becomes a positive slope characteristic in which a frictional force of the friction engagement element decreases as the rotational difference decreases, when engaging the friction engagement element.

Abstract: A friction engagement element control system is provided, which includes a friction engagement element including friction plates, which are an input-side friction plate and an output-side friction plate, and an actuation system configured to engage the input-side friction plate with the output-side friction plate with a pushing force, the friction plates having a characteristic in which a friction coefficient thereof decreases as a rotational difference between the friction plates increases. The device includes a controller configured to control the pushing force so that the negative slope characteristic becomes a positive slope characteristic in which a frictional force of the friction engagement element decreases as the rotational difference decreases, when engaging the friction engagement element.

Abstract: A magnet temperature estimating device for a motor including a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with a gap therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. Gaps adjacent to each magnet in a rotation direction of the rotor are formed in the rotor. The controller estimates a temperature of the magnet based on the induced voltage detected when the magnet opposes any one of the plurality of coils, according to the rotation of the rotor.

Abstract: A magnet temperature estimating device for a motor provided with a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with an aperture therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. The controller estimates a temperature of one of the magnets based on an amplitude of a frequency spectrum corresponding to a given frequency, among frequency components constituting the induced voltage.

Abstract: A heat absorbing element 20 of a thin-film Peltier type is thermally connected with a surface of a semiconductor element body portion 10 through a heat conducting layer 15 which is an electrical insulator. The heat absorbing element 20 is comprised of a substance having a bulk thermal conductivity of 50 W/mK or more and a Seebeck coefficient of 300 ?V/K or more.

Abstract: A cooling structure of an electric motor comprising a rotor, a stator provided with a wound stator coil, and a housing accommodating the rotor and the stator, wherein a coil end of the stator is spaced apart from an inner wall of the housing. The cooling structure comprises a thermally-conductive member which is provided to thermally connect the housing and the coil end and includes a laminated graphite sheet, and an airbag which is configured to be deployed in a space portion between the inner wall of the housing and the coil end so as to press at least a portion of the thermally-conductive member against the coil end by means of a pressure of pressurized air therein.

Abstract: A cooling structure of an electric motor comprising a rotor, a stator provided with a wound stator coil, and a housing accommodating the rotor and the stator, wherein a coil end of the stator is spaced apart from an inner wall of the housing. The cooling structure comprises a thermally-conductive member which is provided to thermally connect the housing and the coil end and includes a laminated graphite sheet, and an airbag which is configured to be deployed in a space portion between the inner wall of the housing and the coil end so as to press at least a portion of the thermally-conductive member against the coil end by means of a pressure of pressurized air therein.

Abstract: A feeder circuit for a main relay to control ON of OFF of an electric supply from a high-voltage battery is constituted at least by a first harness, the main relay, a second harness and switch means which are connected in series from a plus-terminal side of a low-voltage battery to a vehicle-body ground side. The first harness and the second harness are arranged to be adjacent to each other in a specified range having a specified length so that both thereof in the above-described specified range are damaged in a vehicle collision or the like.

Abstract: In an electric vehicle inverter apparatus 100, a vehicle control controller 15 detects a switch open signal output from a collision detector 16 when the collision detector 16 is caused by a collision between electric vehicles to operate. Then, an inverter main circuit connection switch 10 of a high-voltage battery unit 8 is put into an open state. Thus, the direct-current power supply from a high-voltage battery 12 to a DC bus portion is interrupted. In addition, electric charges charged into a main circuit capacitor 7 are discharged by a forced discharge circuit portion 22b.

Abstract: A feeder circuit for a main relay to control ON of OFF of an electric supply from a high-voltage battery is constituted at least by a first harness, the main relay, a second harness and switch means which are connected in series from a plus-terminal side of a low-voltage battery to a vehicle-body ground side. The first harness and the second harness are arranged to be adjacent to each other in a specified range having a specified length so that both thereof in the above-described specified range are damaged in a vehicle collision or the like.

Abstract: A hybrid vehicle includes: first and second rotary electric machines; a matrix converter connecting the first and second rotary electric machines to each other to provide AC to AC power conversion between both the rotary electric machines; a battery connected to an electrical path branched off between the matrix converter and the second rotary electric motor; an inverter interposed among the battery, the matrix converter and the second rotary electric machine to convert AC power to DC power and vice versa; and a controller. The controller activates the first rotary electric machine with power fed from the battery and restrains the change in torque output of the second rotary electric machine at the activation of the first rotary electric machine.

Abstract: A hybrid electric vehicle includes, in one example, a motor-generator driven by an engine to generate alternating current, wherein the motor-generator is further configured to start the engine, a motor for driving the vehicle, a diode rectifier to rectify alternating current generated by the motor-generator, an inverter connected to a feed circuit between the diode rectifier and the motor to convert direct current in the feed circuit into alternating current, a power supply connected to a line connecting the diode rectifier with the inverter, a first feed circuit to supply current to the motor to drive the vehicle through the diode rectifier and the inverter in series a second feed circuit to connect the motor-generator with the power supply while bypassing at least the diode rectifier, and an alternating current converter provided in the second feed circuit.

Abstract: A control system for a hybrid vehicle, which comprises member for determining a required output of a vehicle-driving motor in conformity to a required vehicle power, a member for determining a required output of a generator in conformity to the required output of the vehicle-driving motor, a member for determining a required output of an engine in conformity to the required output of the generator, a battery for storing an electric energy generated by the generator and charged thereinto through an inverter, and discharging the stored electric energy to the vehicle-driving motor through the inverter, and a member for, in response to occurrence of a waveform difference between a required current waveform of the vehicle-driving motor and an output current waveform of the generator due to a change in the required output of the vehicle-driving motor, to perform a waveform-difference correction operation in a direction for eliminating the waveform difference.

Abstract: A control system and method for a hybrid electric vehicle. One example control system includes a current calculating module to calculate a current, the current being at least one of a current to drive a motor of the vehicle and a current generated by the motor, and a feed controller to selectively implement a first mode when the calculated current is below a predetermined current value and to selectively implement a second mode when the calculated current is more than the predetermined current value, wherein either the first feed circuit or the second feed circuit is used in the first mode and both the first feed circuit and the second feed circuit are used in the second mode.

Abstract: Disclosed is a hybrid vehicle control system, which comprises a current conversion device for changing an amplitude or a frequency of an alternating current generated by a generator, unit for determining a required output of a vehicle-driving motor in conformity to a required vehicle-driving force, unit for determining a current waveform to be supplied to the vehicle-driving motor, in conformity to the required output of the vehicle-driving motor, and controllably determine a strategy of how to supply an AC electric power, and a bypass line adapted to bypass the current conversion device. When there is a waveform difference between a current waveform required for the vehicle-driving motor and a current waveform output from the generator, an AC electric power is supply to the vehicle-driving motor after eliminating the waveform difference through the current conversion device.

Abstract: In an electric vehicle inverter apparatus 100, a vehicle control controller 15 detects a switch open signal output from a collision detector 16 when the collision detector 16 is caused by a collision between electric vehicles to operate. Then, an inverter main circuit connection switch 10 of a high-voltage battery unit 8 is put into an open state. Thus, the direct-current power supply from a high-voltage battery 12 to a DC bus portion is interrupted. In addition, electric charges charged into a main circuit capacitor 7 are discharged by a forced discharge circuit portion 22b.

Abstract: Disclosed is a motor control method for an electric-powered vehicle (1), which is designed to switch an output characteristic of an electric motor (5) for rotatably driving a driving wheel (16) of the vehicle (1), between a low-speed mode adaptable to a relatively low rotation speed operation region and a high-speed mode adaptable to a relatively high rotation speed operation region, on the basis of a given switching rotation speed (Nt) as a threshold.

Abstract: Disclosed is a hybrid system of vehicle capable of accurately generating an engine output in conformity to a required vehicle driving power and suppressing an electric power loss even when a battery is used for correcting electric power to prevent occurrence of overshoot or undershoot. The hybrid system of vehicle is designed to drive a generator by an engine and supply an electric power generated by the generator directly to a wheel-driving electric motor so as to drive the motor. The hybrid system of vehicle comprises required motor output setting means for setting a required output of the motor depending on a required vehicle driving power, required generator output setting means for setting a required output of the generator depending on the required motor output set by the required motor output setting means, and engine output setting means for setting an output of the engine depending on the required generator output set by the required generator output setting means.