WO2016181898A1 - Dispositif de moteur électrique et actionneur de mouvement linéaire électrique - Google Patents

Dispositif de moteur électrique et actionneur de mouvement linéaire électrique Download PDF

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Publication number
WO2016181898A1
WO2016181898A1 PCT/JP2016/063649 JP2016063649W WO2016181898A1 WO 2016181898 A1 WO2016181898 A1 WO 2016181898A1 JP 2016063649 W JP2016063649 W JP 2016063649W WO 2016181898 A1 WO2016181898 A1 WO 2016181898A1
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Prior art keywords
temperature
coil
electric motor
estimated
electric
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PCT/JP2016/063649
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English (en)
Japanese (ja)
Inventor
唯 増田
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Ntn株式会社
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Publication of WO2016181898A1 publication Critical patent/WO2016181898A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/64—Controlling or determining the temperature of the winding

Definitions

  • the present invention relates to an electric motor device and an electric linear actuator, and relates to a technique in which a temperature sensor is provided in some coils and a temperature estimation result of another coil is corrected from a detection result of the temperature sensor.
  • An electric actuator that converts a rotational motion of an electric motor into a linear motion through a linear motion mechanism by depressing a brake pedal, and presses a brake pad against a brake disk to apply a braking force
  • Patent Document 1 An electric linear actuator using a planetary roller screw mechanism
  • Patent Document 2 An electric linear actuator using a planetary roller screw mechanism
  • Patent Document 3 A technique in which a thermistor is provided at the neutral point terminal of each phase coil in the electric motor, and the average temperature of each phase coil is measured by this thermistor (Patent Document 3). 4).
  • a technique for estimating a coil temperature from voltage, current, and temperature characteristics of copper resistance when the electric motor is in a stopped state Patent Document 4).
  • JP-A-6-327190 JP 2006-194356 A Japanese Patent Laid-Open No. 11-234964 JP 2004-208453 A
  • a countermeasure for disposing a temperature sensitive element such as a thermistor on a motor coil as shown in Patent Document 3 is generally used.
  • a servo motor of a system such as an electric actuator used for a brake
  • current may concentrate on a predetermined coil, and heat generation may be biased.
  • the measure for measuring the average temperature of each coil as in Patent Document 3 there is a possibility that the system may be stopped in a state where there is still a sufficient heat load.
  • providing thermistors for all the coils may cause problems in terms of cost, wiring and assembly man-hours, and mounting space.
  • An object of the present invention is to provide an electric motor device and an electric linear actuator that can reduce costs and man-hours, and can accurately obtain all motor coil temperatures from some motor coil temperatures and the like. .
  • the electric motor device of the present invention is an electric motor device DB comprising an electric motor 4 having a plurality of exciting coils 4a and a control device 2 for controlling the electric motor 4, At least one excitation coil 4a among the plurality of excitation coils 4a in the electric motor 4 is provided with a temperature detection element 26 for detecting the temperature of the excitation coil 4a.
  • the control device 2 Current detection means 22 for respectively obtaining currents flowing through the plurality of exciting coils 4a; A coil temperature estimating means 19 for calculating an estimated temperature of the plurality of exciting coils 4a from the current of the exciting coil 4a obtained by the current detecting means 22 and information including heat generation and heat dissipation characteristics in the exciting coil 4a; Based on the comparison result between the temperature of the excitation coil 4 a detected by the temperature detection element 26 and the estimated temperature estimated by the coil temperature estimation means 19 for the excitation coil 4 a provided with the temperature detection element 26. And an estimation error correcting means 20 for correcting the estimated temperatures of all the exciting coils 4a estimated by the coil temperature estimating means 19.
  • the excitation coil 4 a is a coil that constitutes a magnetic pole for rotation in the electric motor 4.
  • the current detection means 22 obtains the currents flowing through the plurality of exciting coils 4a, respectively.
  • the current detection means 22 detects the current of only two phases, and the remaining one phase is subtracted from zero because the sum of the three-phase currents is zero. You may ask.
  • the coil temperature estimating means 19 calculates estimated temperatures of the plurality of exciting coils 4a from the obtained current of the exciting coil 4a and information including heat generation and heat dissipation characteristics in the exciting coil 4a.
  • the estimation error correction means 20 compares the temperature of the excitation coil 4 a detected by the temperature detection element 26 with the estimated temperature estimated by the coil temperature estimation means 19 for the excitation coil 4 a provided with the temperature detection element 26. To do.
  • the estimation error correction unit 20 corrects the estimated temperatures of all the excitation coils 4a estimated by the coil temperature estimation unit 19 based on the comparison result. Even for the estimated temperature of the exciting coil 4a that is not detected by the temperature detecting element 26, the coil temperature can be obtained more accurately than in the prior art by performing correction based on the comparison result.
  • the coil temperature can be obtained accurately and indirectly from the coil temperature and current at other points.
  • this configuration only requires the temperature detection element 26 to be provided in at least one excitation coil 4a.
  • by estimating the temperatures of all the excitation coils 4a it is possible to improve the temperature detection accuracy when the load is concentrated on the predetermined excitation coil 4a.
  • the coil temperature estimation means 19 uses a value proportional to the square of the current of the excitation coil 4a obtained by the current detection means 22 as an operation amount, and uses a state quantity and an observation quantity as an estimated temperature of the excitation coil 4a of each phase,
  • the state transition matrix 27 is used as the heat capacity and thermal conductivity of the excitation coil 4a of each phase, and the estimation error correction means 20 determines the deviation between the temperature of the excitation coil 4a detected by the temperature detection element 26 and the observed amount.
  • the control device 2 may include a state estimation observer including the coil temperature estimation unit 19 and the estimation error correction unit 20.
  • the determined gain L is determined by, for example, a result of a test or simulation.
  • the gain L may be a fixed value or a variable value.
  • the state estimation observer may have a function of changing the gain of the feedback with a correlation determined with respect to a change in the manipulated variable.
  • the determined correlation is determined by a result of a test or a simulation, for example.
  • processing may be performed to increase the gain L when applying a large current at which the coil temperature is likely to change sharply. By changing the gain L in this way, the estimated temperature of the exciting coil 4a can be corrected finely and quickly.
  • the control device 2 uses at least one of the maximum value of the estimated temperatures of all the excitation coils 4a corrected by the estimation error correction means 20 and the differential value of the estimated temperature of all the excitation coils 4a.
  • this value is equal to or greater than a predetermined value
  • the phase current limiting means 24 for limiting the phase current of the exciting coil 4a where the maximum value of the estimated temperature is estimated may be provided.
  • the determined value is determined by a result of a test or a simulation, for example.
  • the phase current limiting unit 24 determines whether or not a value using at least one of the maximum value of the estimated temperature and the differential value of the estimated temperature is equal to or greater than a predetermined value. judge. When it is determined that the value is equal to or greater than the predetermined value, the phase current limiting unit 24 limits the phase current of the exciting coil 4a where the estimated maximum temperature is estimated. Therefore, by limiting the phase current of the exciting coil 4a when the load is concentrated on the predetermined exciting coil 4a, it is possible to reliably prevent thermal deterioration of the exciting coil 4a.
  • the electric linear actuator 1 includes any one of the electric motor devices DB according to the present invention and a linear motion mechanism 6 that converts the rotational motion of the electric motor 4 of the electric motor device DB into a linear motion.
  • the device 2 has an axial force control function for controlling the axial force of the linear motion mechanism 6.
  • the control device 2 performs control so that the axial force of the linear motion mechanism 6 is kept constant, for example, the motor phase current is constantly applied constantly. For this reason, the loss of each exciting coil 4a varies, and each exciting coil 4a has a temperature difference.
  • measures to reliably prevent thermal degradation of the excitation coil 4a should be taken by improving the temperature detection accuracy of all the excitation coils 4a. Can do.
  • the electric linear actuator 1 includes a brake rotor 8, a friction member 9 that makes contact with the brake rotor 8, the linear movement mechanism 6 that makes the friction member 9 contact the brake rotor 8, and the linear movement mechanism 6.
  • the control device 2 may control a braking force that is an axial force of the linear motion mechanism 6 by controlling the electric motor 4. In this case, the redundancy can be improved and the cost can be reduced as compared with the conventional electric brake actuator.
  • FIG. 1 It is a block diagram of a control system of the electric servo system according to the embodiment of the present invention. It is a figure which shows schematically the electric brake device of the same electric servo system. It is a figure which shows the example of mounting of the coil temperature estimation means and estimation error correction means in the same electric motor device. It is a figure which shows the operation example of the same electric motor apparatus.
  • the present invention is not limited to this example.
  • this electric servo system includes a plurality of electric motor devices DB (only one is shown in FIG. 1), a power supply device 3, and a host ECU 17.
  • Each electric motor device DB includes an electric actuator (electric linear actuator) 1 and a control device 2. First, the electric actuator 1 will be described.
  • the electric actuator 1 applicable to the electric brake device includes an electric motor 4, a speed reduction mechanism 5 that decelerates the rotation of the electric motor 4, a linear motion mechanism 6, and a parking brake that is a parking brake.
  • a mechanism 7, a brake rotor 8, and a friction member 9 are included.
  • the electric motor 4, the speed reduction mechanism 5, and the linear motion mechanism 6 are incorporated in, for example, a housing not shown.
  • the electric motor 4 is composed of a three-phase synchronous motor or the like.
  • the speed reduction mechanism 5 is a mechanism that transmits the rotation of the electric motor 4 to the rotation shaft 10 of the linear motion mechanism 6 while reducing the transmission, and includes a primary gear 12 and an intermediate gear (secondary gear) attached to the rotor shaft 4 a of the electric motor 4. Gear) 13 and a tertiary gear 11 fixed to the end of the rotary shaft 10.
  • the speed reduction mechanism 5 can reduce the rotation of the primary gear 12 by the intermediate gear 13 and transmit it to the tertiary gear 11.
  • the linear motion mechanism 6 is a mechanism that converts the rotational motion output from the speed reduction mechanism 5 into a linear motion of the linear motion portion 14 by a feed screw mechanism and causes the friction member 9 to contact and separate from the brake rotor 8.
  • the linear motion part 14 is supported so as to be free of rotation and movable in the axial direction indicated by the arrow A1.
  • a friction member 9 is provided at the outboard side end of the linear motion portion 14.
  • a linear solenoid is applied as the actuator 16 of the parking brake mechanism 7.
  • the parking brake mechanism 7 is locked by causing a lock member (solenoid pin) 15 to be advanced by an actuator 16 and fitted in a locking hole (not shown) formed in the intermediate gear 13. By prohibiting the rotation of 13, the parking lock state is established.
  • the parking brake mechanism 7 allows the rotation of the intermediate gear 13 by releasing the lock member 15 from the locking hole, thereby bringing the lock member 15 into an unlocked state.
  • a power supply device 3 and a host ECU 17 which is a host control means of each controller 2 are connected to the controller 2 of each electric motor device DB.
  • the control device 2 and the electric actuator 1 in one electric motor device DB are shown, and the other electric brake devices are not shown.
  • an electric control unit that controls the entire vehicle is applied as the host ECU 17.
  • the host ECU 17 has an integrated control function for each electric motor device DB.
  • a target value command such as a motor angular velocity, a motor angle, and other predetermined loads is input from the host ECU 17 to the control calculator 18 of the control device 2.
  • the power supply device 3 supplies electric power to the electric motor 4 and the control device 2 in each electric motor device DB.
  • the control device 2 includes a control arithmetic unit 18, a coil temperature estimation unit 19, an estimation error correction unit 20, a motor driver 21, a current sensor 22 that is a current detection unit, and the like.
  • the control computing unit 18, the coil temperature estimation means 19, and the estimation error correction means 20 may be implemented by a processor such as a microcomputer or a hardware module such as an ASIC, FPGA, DSP, for example.
  • the control arithmetic unit 18 includes a control arithmetic function unit 23 and phase current limiting means 24.
  • the control calculation function unit 23 stores a LUT (Look Up Table) implemented in software or hardware or a software library (Library) so as to achieve the control target from the host ECU 17 from the values of various sensors.
  • a control signal for the motor driver 21 is generated using a predetermined conversion function and hardware equivalent thereto (hereinafter referred to as “realization model”).
  • the phase current limiting unit 24 refers to the estimation result of the coil temperature estimation unit 19 and executes a process of protecting the exciting coil 4a from heat generation according to the estimation result (described later).
  • the motor driver 21 converts the DC power of the power supply device 3 into three-phase AC power used for driving the electric motor 4.
  • the motor driver 21 may constitute a half bridge circuit or a full bridge circuit using a switch element such as a MOSFET (metal-oxide-semiconductor field-effect transistor) or an IGBT (insulated gate bipolar transistor). .
  • the motor driver 21 may include a pre-driver that instantaneously drives the switch element.
  • the current sensor 22 is a current detection means for obtaining currents flowing through the three-phase excitation coils 4a.
  • the current sensor 22 is one of the various sensors described above. For example, a current sensor that detects a current value by detecting a magnetic field generated around the power transmission path may be used, and a shunt resistor and an operational amplifier are used. A current sensor that detects the current value by detecting the voltage drop amount may be used. When the current sensor for detecting the magnetic field is used, it can be mounted with high efficiency and high accuracy, and when the current sensor for detecting the voltage drop amount is used, it can be mounted at low cost. Also, when measuring the three-phase current, for example, measure the current of only two of the three phases, and calculate the remaining one phase by subtracting from zero because the sum of the three-phase current is zero. May be.
  • a brushless DC motor including a plurality of exciting coils 4a, a rotor angle sensor 25, a temperature sensor 26, and a rotor (not shown) having permanent magnets is an electric motor that achieves both high speed, small size, and high accuracy. Since it is suitable for a servo system, it can be adopted. However, a functional DC motor with a brush or a stepping motor can be used as the electric motor 4.
  • the exciting coil 4a may be concentrated winding wound around one tooth or distributed winding extending over a plurality of teeth. Comparing the two, the concentrated winding can be reduced in size, and the distributed winding can have high efficiency and low torque ripple.
  • a sensor such as a resolver or a magnetic encoder may be mounted on the electric motor 4, and the rotor angle may be estimated without using a rotating coil voltage.
  • a sensor such as a magnetic encoder
  • the rotor angle can be detected with high accuracy from a low speed to a stopped state, and estimating the rotor angle without a sensor is advantageous for space saving.
  • the temperature sensor 26 which is a temperature detection element, detects the temperature of the exciting coil 4a.
  • a temperature sensor 26 for detecting the temperature of the excitation coil 4a is provided in at least one of the three-phase excitation coils 4a in the electric motor 4 or in any one of the excitation coils 4a.
  • a thermistor using a temperature-sensitive resistor and a voltage dividing circuit are suitable for simplicity and low cost.
  • the temperature sensor 26 may be disposed so as to be in contact with the single excitation coil 4a. For example, in the case of being in the middle of adjacent coils of the concentrated winding coil, the temperature sensor 26 is disposed so as to be in contact with the plurality of excitation coils 4a and 4a. You may do it.
  • the control device 2 is provided with a coil temperature estimation means 19 and an estimation error correction means 20.
  • the control calculator 18 is provided with phase current limiting means 24. More specifically, the coil temperature estimating means 19 uses the current of the exciting coil 4a obtained by the current sensor 22 and the information including the heat generation and heat dissipation characteristics in the exciting coil 4a, and more specifically, the above implementation model, multiplication or integration. Or a hardware function that can calculate and output the estimated temperature of the three-phase exciting coil 4a using a function equivalent to the above or a hardware equivalent thereto, or a software function on a processor (not shown).
  • FIG. 3 is a diagram showing an implementation example of the coil temperature estimation means 19 and the estimation error correction means 20.
  • the control device 2 (FIG.
  • the coil temperature estimating means 19 is given based on the following heat generation and heat dissipation characteristics, for example, as a general heat transfer characteristic equation.
  • the heat capacity consists of the specific heat and volume of the substance.
  • the heat transfer coefficient consists of the thermal conductivity of the substance, the heat transfer coefficient of the contact portion, the heat transfer area, and the heat transfer distance.
  • the heat generation basically consists of coil copper loss.
  • the state quantity is set to the estimated temperature ⁇ x (t) of the excitation coil 4a of each phase, and the input operation quantity is proportional to the square of the current.
  • the state transition matrix 27 is the heat capacity and heat transfer coefficient of the excitation coil 4a of each phase.
  • the estimated coil temperature x of u, v, and w phases obtained via the integrator 28 is output to the outside and input to the phase current limiting means 24.
  • the estimation error correction means 20 is based on the comparison result between the temperature of the excitation coil 4 a detected by the temperature sensor 26 and the estimated temperature estimated by the coil temperature estimation means 19 for the excitation coil 4 a provided with the temperature sensor 26.
  • the temperature of the coil 4a of the phase provided with the temperature sensor 26 is directly detected by the temperature sensor 26. Need not be estimated.
  • the temperature sensor 26 may be easily affected by noise, for example, when a simple measurement system including a temperature sensitive resistor and a voltage dividing circuit is constructed.
  • the coil temperature estimating means 19 serves as a filter, the coil temperature is estimated also in the exciting coil 4a provided with the temperature sensor 26, as in the other exciting coils 4a not provided with the temperature sensor 26. It is preferable.
  • the observer gain L may be a fixed value or may be a variable value that changes with a predetermined correlation with respect to the change in the manipulated variable q (t).
  • processing may be performed to increase the gain L when a large current is applied, in which the coil temperature is likely to change sharply.
  • the estimated temperature of the exciting coil 4a can be corrected finely and quickly.
  • the estimated temperature of each excitation coil 4a can be corrected by using the deviation between the temperature of the excitation coil 4a detected by the temperature sensor 26 and the observed quantity column vector (that is, the estimated temperature).
  • the phase current limiting unit 24 includes a determination unit 24a and a limiting unit 24b.
  • the determination unit 24a uses at least one of the maximum values of the estimated temperatures of all the excitation coils 4a corrected by the estimation error correction means 20 and the differential values of the estimated temperatures of all the excitation coils 4a.
  • a hardware circuit capable of determining and outputting whether or not this value is equal to or greater than a predetermined value using the above-described implementation model, or a comparison function or hardware equivalent thereto. Alternatively, it is composed of software functions on a processor (not shown).
  • the limit unit 24b When it is determined that the limit unit 24b is equal to or greater than the value determined by the determination unit 24a, the limit unit 24b receives the input of the determination result, and more specifically, the implementation model, the comparison function, or equivalent hardware It is constituted by a hardware function or a software function on a processor (not shown) that can output a command for limiting the phase current of the exciting coil 4a whose estimated temperature maximum value is estimated using the wear.
  • the limiter 24b may limit the estimated phase current so as to reduce several percent to several tens of percent, or depending on one or both of the motor rotational speed and the estimated coil temperature.
  • the phase current may be limited to a predetermined value.
  • the determined phase current is determined by a result of a test or a simulation, for example. Therefore, by limiting the phase current of the exciting coil 4a by the phase current limiting means 24 when the load is concentrated on the predetermined exciting coil 4a, the thermal deterioration of the exciting coil 4a can be surely prevented.
  • FIG. 4 is a diagram illustrating an operation example of the electric motor device.
  • an operation example of an electric servo motor system that controls an actuator axial force (brake force) represented by an electric brake will be described.
  • FIG. 4A shows the actuator axial force
  • FIG. 4B shows the motor phase current when the actuator axial force is applied.
  • the control device 2 is provided with a coil temperature estimation means 19 and an estimation error correction means 20.
  • the control calculator 18 is provided with phase current limiting means 24.
  • the coil temperature estimation means 19 calculates the estimated temperature of the three-phase excitation coil 4a from the required current of the excitation coil 4a and information including heat generation and heat dissipation characteristics in the excitation coil 4a. Is calculated.
  • the estimation error correction means 20 compares the temperature of the excitation coil 4 a detected by the temperature sensor 26 with the estimated temperature estimated by the coil temperature estimation means 19 for the excitation coil 4 a provided with the temperature sensor 26.
  • the estimation error correction unit 20 corrects the estimated temperatures of all the excitation coils 4a estimated by the coil temperature estimation unit 19 based on the comparison result. Even for the estimated temperature of the exciting coil 4a that is not detected by the temperature sensor 26, the coil temperature can be obtained more accurately than in the prior art by performing correction based on the comparison result.
  • the phase current limiting means 24 is provided to limit the motor phase current.
  • the phase current limiting means 24 may be a process of limiting the current upper limit value according to the estimated temperature of the exciting coil 4a, or may be a process of stopping the operation when the estimated temperature exceeds a predetermined value.
  • the process of limiting the current upper limit value can prevent the electric motor 4 from stopping undesirably, although the control calculator 18 needs to execute the calculation process.
  • the process of stopping the operation can be performed simply and reliably.
  • a process for limiting the current upper limit value and a process for stopping the operation may be used in combination.
  • FIG. 3 shows a simple configuration of a linear observer, but for example, a non-linear observer represented by a VSS observer may be used. By using such a nonlinear observer, the accuracy of removing error factors is increased.
  • the electric brake device of this embodiment may be applied to an electric press.
  • the control device includes at least a coil temperature estimation means, an estimation error correction means, It is possible to obtain the coil temperature of each excitation coil with high accuracy.

Abstract

L'invention concerne un dispositif de moteur électrique et un actionneur de mouvement linéaire électrique qui permettent de réduire les coûts et de réduire la charge de travail, et de trouver avec précision toutes les températures de bobines de moteur à partir de certaines températures de bobines de moteur ou similaire. Un capteur de température (26) est installé au niveau d'au moins une bobine parmi une pluralité de bobines d'excitation (4a). Un dispositif de commande (2) comporte un capteur de courant (22), un moyen d'estimation de température de bobine (19), et un moyen de correction d'erreur d'estimation (20). Le moyen d'estimation de température de bobine (19) calcule une température estimée d'une pluralité de bobines d'excitation (4a) à partir d'un courant de bobine trouvé par le capteur de courant (22) et à partir d'informations incluant la génération de chaleur et les caractéristiques de dissipation thermique des bobines d'excitation (4a). Le moyen de correction d'erreur d'estimation (20) corrige la température estimée de toutes les bobines d'excitation (4a) estimée par le moyen d'estimation de température de bobine (19) sur la base d'un résultat de comparaison entre la température de bobine détectée par le capteur de température (26) pour la ou les bobines d'excitation (4a) au niveau desquelles le capteur de température (26) est installé et la température estimée.
PCT/JP2016/063649 2015-05-14 2016-05-06 Dispositif de moteur électrique et actionneur de mouvement linéaire électrique WO2016181898A1 (fr)

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JP2015098813A JP6080894B2 (ja) 2015-05-14 2015-05-14 電動モータ装置および電動式直動アクチュエータ
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WO2018209655A1 (fr) * 2017-05-18 2018-11-22 General Electric Company Système et procédé d'estimation de la température de moteur d'un système de pas d'une éolienne

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KR102343296B1 (ko) 2019-11-28 2021-12-24 현대모비스 주식회사 Igbt 모듈의 온도 편차 보정 기능을 구비한 모터 구동 시스템
WO2022009601A1 (fr) 2020-07-06 2022-01-13 日立Astemo株式会社 Dispositif de commande de moteur et procédé de commande de moteur
US20240069507A1 (en) * 2022-08-31 2024-02-29 Exlar Corporation Systems and methods for dynamic current limit adjustment

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JP2006050746A (ja) * 2004-08-03 2006-02-16 Nissan Motor Co Ltd 回転電機の温度予測装置
JP2009089531A (ja) * 2007-10-01 2009-04-23 Nsk Ltd モータ温度推定装置及びそれを搭載した電動パワーステアリング装置
JP2015033995A (ja) * 2013-08-09 2015-02-19 トヨタ自動車株式会社 車両用回転電機温度推定システム

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JP2001268989A (ja) * 2000-03-21 2001-09-28 Hitachi Ltd 同期電動機とそれを用いた電気車及びその制御方法
JP2006050746A (ja) * 2004-08-03 2006-02-16 Nissan Motor Co Ltd 回転電機の温度予測装置
JP2009089531A (ja) * 2007-10-01 2009-04-23 Nsk Ltd モータ温度推定装置及びそれを搭載した電動パワーステアリング装置
JP2015033995A (ja) * 2013-08-09 2015-02-19 トヨタ自動車株式会社 車両用回転電機温度推定システム

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Publication number Priority date Publication date Assignee Title
WO2018209655A1 (fr) * 2017-05-18 2018-11-22 General Electric Company Système et procédé d'estimation de la température de moteur d'un système de pas d'une éolienne
US11629701B2 (en) 2017-05-18 2023-04-18 General Electric Company System and method for estimating motor temperature of a pitch system of a wind turbine

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