WO2019084721A1 - Moteur électrique, système de commande de moteur électrique, procédé de mesure de température de moteur électrique et véhicule aérien sans pilote - Google Patents

Moteur électrique, système de commande de moteur électrique, procédé de mesure de température de moteur électrique et véhicule aérien sans pilote Download PDF

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Publication number
WO2019084721A1
WO2019084721A1 PCT/CN2017/108373 CN2017108373W WO2019084721A1 WO 2019084721 A1 WO2019084721 A1 WO 2019084721A1 CN 2017108373 W CN2017108373 W CN 2017108373W WO 2019084721 A1 WO2019084721 A1 WO 2019084721A1
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WO
WIPO (PCT)
Prior art keywords
motor
additional winding
winding
stator
temperature
Prior art date
Application number
PCT/CN2017/108373
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English (en)
Chinese (zh)
Inventor
周震昊
李阳
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201780004663.2A priority Critical patent/CN108513691B/zh
Priority to PCT/CN2017/108373 priority patent/WO2019084721A1/fr
Publication of WO2019084721A1 publication Critical patent/WO2019084721A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/18—Windings for salient poles
    • H02K3/20—Windings for salient poles for auxiliary purposes, e.g. damping or commutating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D27/02—Aircraft characterised by the type or position of power plants
    • B64D27/24—Aircraft characterised by the type or position of power plants using steam or spring force
    • 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
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • the embodiment of the invention belongs to the field of electric motors, and particularly relates to a motor, a motor control system using the same, and an unmanned aerial vehicle, and a motor temperature measuring method applied to the motor.
  • the motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction, and broadly includes an electric motor, a generator, and a transformer, which can be further classified into various electric motors such as a permanent magnet motor, an induction motor, and the like according to the structure.
  • thermodynamics As an instrument for electrical and mechanical energy conversion, according to the entropy increase principle of the second law of thermodynamics, there is no energy conversion process with a conversion efficiency of 100%. Therefore, the motor will generate energy loss when working, and the energy lost will be converted into heat. Release, and cause the temperature of the motor to rise. Temperature is the main factor affecting the life of the motor. When the temperature is too high, the motor may be burnt. Therefore, the temperature inside the motor needs to be monitored. The traditional temperature measurement mode is implanted multiple times. The way the temperature sensor is in the winding of the motor, such as implanting a thermocouple, a thermistor, etc. However, the temperature range of the implantable temperature sensor is limited. When the temperature rise inside the motor is uneven, there may be a phenomenon of monitoring hysteresis. Therefore, the reliability is low, and the implantation of a plurality of temperature sensors also leads to higher costs.
  • an embodiment of the present invention provides a novel motor capable of realizing global temperature monitoring inside the motor, which can effectively solve the existing method of implanting the temperature sensor due to monitoring hysteresis when the temperature rise inside the motor is uneven. There is a problem of delay alarm to reduce the possibility of motor failure burning; in addition, the embodiment of the invention also provides a motor temperature measurement method applied to the motor, and a motor control system and an unmanned aerial vehicle using the motor.
  • an electric machine includes a rotor including a rotor core and a magnetic element disposed on the rotor core, the stator including a stator core and disposed in the a stator winding on a stator core, wherein an additional winding is further disposed inside the motor, the additional winding is wound around the stator core, and an electrical parameter change of the additional winding indicates an abnormal temperature of the motor .
  • the motor when the electrical parameters of the additional winding are changed, it is considered that a temperature change has occurred inside the motor, and since the additional winding is wound around the stator core, when a temperature change occurs anywhere in the motor It can be monitored by the additional winding, so that the global temperature monitoring of the motor can be realized, and the temperature measurement mode of the additional winding can reduce the pressure of the monitoring interface brought by the existing multi-temperature sensor monitoring mode. Reduce equipment costs.
  • the present invention also provides a motor control method, which is applied to the above-mentioned motor in the content of the present invention, including:
  • the motor control method provided by the invention obtains the electrical parameters of the additional windings, compares the electrical parameters with the preset parameter curves to obtain a comparison result, and finally determines the temperature condition inside the motor according to the comparison result, because the additional The winding is wound around the stator core.
  • any temperature change occurs in any part of the motor, it can be monitored by the additional winding, so that the global temperature monitoring of the motor can be realized.
  • the present invention also provides a motor control system including a controller and the above-described motor in the context of the present invention, the controller including a processing unit and a motor control unit;
  • the processing unit is configured to acquire electrical parameters of the additional winding of the motor in real time, compare the electrical parameters of the additional winding with a preset parameter curve, and output a comparison result to the motor control unit;
  • the motor control unit is configured to issue a motor temperature abnormality alarm when the comparison result is that the electrical parameter of the additional winding deviates from the standard preset parameter curve by a preset threshold.
  • the present invention also provides an unmanned aerial vehicle comprising a fuselage, a plurality of arms extending outward from the fuselage, a power device disposed on the arm, and a device disposed at the a controller inside the fuselage, wherein the power unit includes the motor described above in the context of the present invention, Connecting the controller to the controller;
  • the controller includes a processing unit and a motor control unit;
  • the processing unit is configured to acquire electrical parameters of the additional winding of the motor in real time, compare the electrical parameters of the additional winding with a preset parameter curve, and output a comparison result to the motor control unit;
  • the motor control unit is configured to issue a motor temperature abnormality alarm when the comparison result is that the electrical parameter of the additional winding deviates from the preset parameter curve by a preset threshold.
  • FIG. 1 is a schematic diagram of a motor according to an embodiment of the present invention.
  • FIG 2 is a schematic view of the stator core of the motor shown in Figure 1;
  • FIG. 3 is a schematic diagram of another motor according to an embodiment of the present invention.
  • FIG. 5 is another winding manner of an additional winding according to an embodiment of the present invention.
  • FIG. 6 is another winding manner of an additional winding according to an embodiment of the present invention.
  • FIG. 7 is another winding manner of an additional winding according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method for measuring temperature of a motor according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a load-resistance curve according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram of a motor control system according to an embodiment of the present invention.
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the invention.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiment, and are not exclusive or alternative to the other embodiments. Example. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • Embodiments of the present invention provide a novel electric motor including a rotor including a rotor core and a magnetic element disposed on the rotor core, the stator including a stator core and a stator iron disposed thereon a stator winding on the core, wherein the motor is further provided with an additional winding, the additional winding is wound around the stator core, and the electrical parameter change of the additional winding indicates that the temperature of the motor is abnormal.
  • the present invention also provides a motor control method, including:
  • the present invention also provides a motor control system including a controller and a motor, the controller including a processing unit and a motor control unit;
  • the processing unit is configured to acquire electrical parameters of the additional winding of the motor in real time, compare the electrical parameters of the additional winding with a preset parameter curve, and output a comparison result to the motor control unit;
  • the motor control unit is configured to issue a motor temperature abnormality alarm when the comparison result is that the electrical parameter of the additional winding deviates from the standard preset parameter curve by a preset threshold.
  • the present invention also provides an unmanned aerial vehicle comprising a fuselage, a plurality of arms extending outward from the fuselage, a power device disposed on the arm, and a body disposed inside the fuselage Controller, wherein the power unit includes a motor, and the motor is coupled to the controller;
  • the controller includes a processing unit and a motor control unit;
  • the processing unit is configured to acquire electrical parameters of the additional winding of the motor in real time, compare the electrical parameters of the additional winding with a preset parameter curve, and output a comparison result to the motor control unit;
  • the motor control unit is configured to issue a motor temperature abnormality alarm when the comparison result is that the electrical parameter of the additional winding deviates from the preset parameter curve by a preset threshold.
  • the motor is broadly divided into an electric motor, a generator, and a transformer.
  • the motor main The electric motor is taken as an example for description.
  • the outer rotor motor is taken as an example.
  • the technical principle explained in the embodiment of the present invention can be applied to the inner rotor motor.
  • the technical principles described in the embodiments of the present invention are particularly applicable to multi-phase motors, particularly in the field of micro-motors, such as power motors of consumer unmanned aerial vehicles, clouds. Taiwan motor, etc.
  • FIG. 1 is a schematic diagram of a motor according to an embodiment of the present invention, which is a three-phase outer rotor motor structure, including a rotor 10 and a stator 20;
  • the rotor 10 includes a rotor core 11 and a magnetic element 12 disposed on the rotor core 11;
  • the stator 20 includes a stator core 21 and a stator winding 22 disposed on the stator core 21.
  • the motor is internally provided with an additional winding 23, and the additional winding 23 is wound around the stator core 21, and the electrical parameter change of the additional winding 23 is displayed.
  • the temperature of the motor is abnormal.
  • the magnetic element 12 forms a pair of magnetic poles
  • the magnetic element 12 may be a rotor winding or a magnet
  • the stator core 21 is provided with a core slot 211, and a core leg 212 is formed between the adjacent two core slots 211, such as As shown in FIG. 2, the core slot 211 and the core post 212 are alternately disposed, and the stator winding 22 is wound around the core post 212.
  • the additional winding 23 is also wound around the core post 212, due to the large number of settings.
  • the core legs 212 may include a plurality of stator windings 22; in a specific embodiment, the number of magnetic elements 12 is not limited, nor the number of core slots 211 on the stator core 21, and the stator windings 22 The number is limited, ie the number of stages of the motor is not limited.
  • the electrical parameter is specifically the resistance value of the additional winding 23 in the operating state, wherein the resistance value of the additional winding 23 passes the known operating voltage and the operating current of the additional winding 23 measured at the operating voltage. Obtaining that the change of the resistance value of the additional winding 23 corresponds to the temperature change of the motor. When the change amount of the resistance value of the additional winding 23 exceeds a preset threshold, the temperature of the motor is abnormal; in a specific embodiment, the additional winding 23 is selected. For different materials, the resistance value of the additional winding 23 varies with the temperature coefficient of the resistance of the different materials (the temperature coefficient of resistance includes the negative temperature coefficient, the positive temperature coefficient, and the critical temperature coefficient at which the resistance will only abrupt at a certain temperature).
  • the change of temperature may have different changes, which may become larger or smaller or vary in magnitude.
  • the additional winding 23 is made of metal (non-alloy)
  • the resistance of the additional winding 23 will rise, and Such as when the additional winding 23
  • the resistance value of the additional winding 23 becomes smaller. Therefore, when the resistance value of the additional winding 23 becomes larger or decreases, the amount of change exceeds a preset threshold, indicating that the temperature of the motor has passed. High, at this time, the motor may have failed. The motor needs to be turned off, or the motor does not malfunction. However, if the temperature is too high, the motor may fail to reduce the output power or turn off the motor.
  • the aforementioned electrical parameters may be additional.
  • Other physical parameters of the winding 23 that may vary with temperature are not limited herein; in addition, in the present embodiment, the preset threshold of the resistance value change of the additional winding 23 has more influencing factors, including the material of the additional winding 23, and the motor work. Environment, motor load conditions, etc., so multiple factors are needed to determine the preset threshold.
  • the additional winding 23 is wound from the core post 212 of the stator core 21 by a single insulated wire.
  • the stator core 21 is illustrated as including three core legs 212.
  • the additional winding 23 is sequentially wound on the three core legs 212 by a single insulated wire, and the finally two connected connectors are connected to the corresponding controller, and the temperature monitoring is performed by the controller and the additional winding 23; in other implementations
  • the additional windings 23 are sequentially wound on the plurality of core legs 212 by a single insulated wire.
  • the additional winding 23 may be formed by winding at least two insulated wires on the core post 212 of the stator core 21, as shown in FIG.
  • the utility model comprises three iron core pillars 212.
  • the additional windings 23 comprise a first sub-addition winding 231, a second sub-addition winding 232 and a third sub-addition winding 233 which are respectively wound on three iron core pillars 212 by three insulated conductors.
  • the three sets of joints are respectively connected to the corresponding controllers, and the temperature monitoring is performed by the controller and the first sub-addition winding 231, the second sub-addition winding 232 and the third sub-addition winding 233, wherein the first sub-addition winding 231,
  • the second sub-addition winding 232 and the third sub-addition winding 233 perform segment temperature detection on the stator 20, and cooperate with each other to realize global temperature monitoring inside the motor, due to the first sub-addition winding 231, the second sub-addition winding 232, and the third sub-s
  • the additional windings 233 are each subjected to local temperature monitoring.
  • any one of the sub-addition windings detects a temperature abnormality
  • the position of the abnormal temperature of the motor can be quickly located for quick maintenance; in other embodiments, Temperature monitoring principle, under the premise of equilibrium maintenance convenience and cost savings and other factors, may be provided an additional sub-windings 23 contained additional number of windings if necessary, which is not limited.
  • the additional windings 23 may be wound on the stator core 21 in different winding manners.
  • the insulated wires of the additional winding 23 are disposed between the insulated wires of the stator winding 22, and Figures 4 and 5 illustrate two different winding modes, wherein the insulated wire and stator of the additional winding 23 of Figure 4
  • the insulated wires of the windings 22 are alternately arranged, and the insulated wires of the two stator windings 22 are disposed between the insulated wires adjacent to the additional winding 23 in FIG. 5.
  • the winding manner of FIGS. 4 and 5 allows the additional winding 23 to monitor any one of the stator windings.
  • the temperature of the insulated wire of 22 is relatively high in accuracy; in other embodiments, two or more insulated wires of the stator winding 22 may be disposed between the insulated wires adjacent to the additional winding 23, thereby achieving global temperature monitoring. Under the premise, the amount of wire used for the additional winding 23 can be reduced, and the equipment cost can be saved as much as possible.
  • stator winding 22 is wound outside the additional winding 23 such that the additional winding 23 is located between the stator core 21 and the stator winding 22, such that the additional winding 23 can directly monitor the core post 212.
  • the additional winding 23 is wound outside the stator winding 22 such that the stator winding 22 is located between the stator core 21 and the additional winding 23, such that the additional winding 23 can directly monitor the stator winding 22 and The temperature of the core groove 211.
  • the thickness difference of the insulated wires of the additional winding 23 and the stator winding 22 in FIG. 1, FIG. 3, FIG. 4 and FIG. 5 is only for distinguishing the additional winding 23 and the stator winding 22 in the figure, and not for the additional winding 23 and The relative thickness of the insulated wires of the stator winding 22 is defined; at the same time, the difference in cross-sectional diameter of the insulated wires of the additional winding 23 and the stator winding 22 in FIGS.
  • the additional winding 23 may be wound around the stator core 21 by a hybrid winding method.
  • the winding manners of FIG. 4 to FIG. 7 may be combined, and two or more types may be selected.
  • the winding method selects the appropriate winding method according to the different winding position, which helps to improve the accuracy and real-time of temperature monitoring; the winding principle of the additional winding 23 is to realize the global temperature of the motor. Monitoring, therefore, as long as the winding principle is satisfied, other winding methods other than the winding method shown in FIGS. 4 to 7 can be selected as needed, and the description will not be repeated here.
  • the motor provided in the above embodiment of the present invention has at least the following advantages:
  • the temperature measurement mode of the additional winding 23 can reduce the pressure of the monitoring interface brought by the existing multi-temperature sensor monitoring mode. In the traditional way of placing multiple temperature sensors, each temperature sensor needs an independent signal receiving.
  • the port increases the number of ports required on the controller hardware, and the temperature measurement mode of the additional winding 23 used in the embodiment of the present invention can reduce the requirement on the port on the controller; in addition, since a costly temperature sensor is not required, Can reduce equipment costs;
  • the accuracy and real-time performance of the temperature monitoring can be improved, and the monitoring robustness against the faulty condition can be improved, such as single-phase short circuit, single-phase open circuit, etc.
  • the temperature rises unevenly in the motor, and the additional winding 23 can be monitored in time to issue an alarm in time to avoid the existing multi-temperature sensor monitoring mode. In the case of uneven temperature, there is alarm failure or alarm delay. The situation happened.
  • the embodiment of the present invention further provides a method for measuring the temperature of the motor. Referring to the flowchart shown in FIG. 8, the method includes:
  • the motor temperature measurement method of the embodiment of the invention further comprises: calibrating the parameter curve of the motor under normal working conditions, and obtaining the preset parameter curve in step S2.
  • the electrical parameter in step S1 is the resistance value of the additional winding 23, and the preset parameter curve in step S2 is a load-resistance curve.
  • step S2 and step S3 are explained in conjunction with FIG.
  • the controller continuously obtains the resistance value of the additional winding 23, and performs the resistance value with the standard resistance value R Comparing, outputting the comparison result, if at some time, the resistance value of the additional winding 23 is detected to change, from R to R', the amount of change is the absolute value of R' and R, if the amount of change is less than the preset Threshold, the motor temperature is considered to be within the normal range. If the change exceeds the preset threshold, the motor is considered to be outside the normal operating temperature range, indicating that the motor has failed, or There is a risk of malfunction in the motor, and it is necessary to turn off the motor or reduce the output power of the motor.
  • the motor is operated under different loads, and the measurement is performed.
  • the resistance value of the additional winding 23 under each load forms a plurality of sets of load-resistance values, and each set of load-resistance values corresponds to a calibration point, such as a calibration point B1, and a plurality of calibration points constitute a curve C shown in FIG. - Resistance curve, if there are enough calibration points, the adjacent two calibration points can be considered to satisfy the linear relationship.
  • the resistance value of the additional winding 23 deviates from the calibration load-resistance curve over a preset under a certain load.
  • the threshold value indicates that the motor operating temperature is abnormal.
  • the corresponding calibration point of the motor under load L is B1.
  • the resistance value of the additional winding 23 changes.
  • the measured point B2 deviates The offset of the calibration point B1 (ie, the amount of change in the resistance value of the additional winding 23) exceeds a preset threshold, indicating that the motor operating temperature is abnormal.
  • the motor control method provided by the invention obtains the electrical parameters of the additional winding 23, compares the electrical parameters with a preset parameter curve to obtain a comparison result, and finally determines the temperature condition inside the motor according to the comparison result, due to the additional winding 23 is wound around the stator core 21 and occurs anywhere in the motor
  • the additional winding 23 can be monitored as the temperature changes, thereby enabling global temperature monitoring of the interior of the motor.
  • an embodiment of the present invention further provides an unmanned aerial vehicle.
  • the unmanned aerial vehicle includes a fuselage 30 , and a plurality of arms 31 extending outward from the body 30 .
  • the power device 32 includes a motor 321 and the motor 321 is connected to the controller 33.
  • the motor 321 is connected to the controller 33.
  • the controller 33 includes a processing unit 331 and a motor control unit 332.
  • the processing unit 331 is configured to acquire the electrical parameters of the additional winding 23 of the motor 321 in real time, and compare the electrical parameters of the additional winding 23 with a preset parameter curve, and output the comparison. The result is to the motor control unit 332; the motor control unit 332 is configured to issue a motor temperature abnormality alarm when the electrical parameter of the additional winding 23 deviates from the preset parameter curve exceeds a preset threshold value, or control the motor 321 to be turned off, or control the motor 321 Reduce the output power.
  • the electrical parameter of the additional winding 23 is the resistance value of the additional winding 23, and the preset parameter curve is a load-resistance curve.
  • the motor control unit 332 controls the motor 321 to reduce the output power, if the electrical parameter of the additional winding 23 deviates from the preset parameter curve after the motor 321 continues to operate for a certain time, the motor control unit 332 re-controls the motor 321 Increase output power to standard output power.
  • the controller 33 further includes a calibration unit 333 for calibrating the parameter curve of the motor 321 under normal working conditions to obtain a preset parameter curve; the calibration process of the preset parameter curve in this embodiment
  • the unmanned aerial vehicle provided by the embodiment of the present invention further includes a memory (not shown) for storing parameters in the preset parameter curve, and may be a read-only memory (ROM) or a random memory. Take the memory (Random Access Memory, RAM).
  • ROM Read-only memory
  • RAM Random Access Memory
  • the unmanned aerial vehicle provided by the invention obtains the electrical parameters of the additional winding 23, compares the electrical parameters with a preset parameter curve to obtain a comparison result, and finally determines the motor 321 according to the comparison result.
  • the temperature condition of the portion because the additional winding 23 is wound around the stator core 21, can be monitored by the additional winding 23 when a temperature change occurs anywhere in the motor 321 so that the flight of the unmanned aerial vehicle
  • the global temperature monitoring of the motor 321 can be realized.
  • the unmanned aircraft can be controlled to return in time to reduce the risk of crash caused by the motor 321 failure.
  • the embodiment of the present invention further provides a motor control system, as shown in FIG. 11 , which includes a controller 33 and a motor 321 .
  • the related technical content of the motor 321 in this embodiment can refer to the foregoing embodiment. The description of the motor is not repeated here;
  • the controller 33 includes a processing unit 331 and a motor control unit 332;
  • the processing unit 331 is configured to acquire the electrical parameters of the additional winding 23 of the motor 321 in real time, and compare the electrical parameters of the additional winding 23 with a preset parameter curve, and output the comparison result to the motor control unit 332; the motor control unit 332 is used for When the comparison result is that the electrical parameter of the additional winding 23 deviates from the standard preset parameter curve by more than a preset threshold, a motor temperature abnormality alarm is issued, or the control motor 321 is turned off, or the motor 321 is controlled to reduce the output power.
  • the electrical parameter of the additional winding 23 is the resistance value of the additional winding 23, and the preset parameter curve is a load-resistance curve.
  • the motor control unit 332 controls the motor 321 to reduce the output power
  • the motor control unit 332 re-controls the motor 321 to increase the output. Power to standard output power.
  • the controller 33 further includes a calibration unit 333 for calibrating the parameter curve of the motor 321 under normal operating conditions to obtain a preset parameter curve.
  • a calibration unit 333 for calibrating the parameter curve of the motor 321 under normal operating conditions to obtain a preset parameter curve.
  • the motor 321 control system provided by the embodiment of the present invention further includes a memory (not shown) for storing parameters in the preset parameter curve, which may be read-only memory (ROM) or random. Access Memory (RAM).
  • ROM read-only memory
  • RAM random. Access Memory
  • the motor 321 control system acquires the additional winding of the motor 321 through the controller 33
  • the electrical parameter of 23 is compared with the preset parameter curve to obtain a comparison result, and finally the temperature condition inside the motor 321 is determined according to the comparison result, since the additional winding 23 is wound around the stator core 21,
  • the additional winding 23 is wound around the stator core 21,

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  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

L'invention concerne un moteur électrique comprenant un rotor (10) et un stator (20). Le rotor (10) contient un noyau de rotor (11) et un élément magnétique (12) situé sur le noyau de rotor (11). Le stator (20) contient un noyau de stator (21) et un enroulement de stator (22) situé sur le noyau de stator (21). Un enroulement supplémentaire (23) est situé dans le moteur électrique. L'enroulement supplémentaire (23) est enroulé autour du noyau de stator (21). Une variation des paramètres électriques de l'enroulement supplémentaire (23) indique une température anormale du moteur électrique. Puisque l'enroulement supplémentaire est enroulé autour du noyau de stator, lorsque la température varie en un quelconque point du moteur électrique, l'enroulement supplémentaire peut le surveiller, ce qui permet de surveiller la température globale de l'intérieur du moteur électrique tout en réduisant la pression de l'interface de surveillance et les frais d'équipement. L'invention concerne en outre un système de commande de moteur électrique, un véhicule aérien sans pilote utilisant le moteur électrique, et un procédé de mesure de température de moteur électrique appliqué au moteur électrique.
PCT/CN2017/108373 2017-10-30 2017-10-30 Moteur électrique, système de commande de moteur électrique, procédé de mesure de température de moteur électrique et véhicule aérien sans pilote WO2019084721A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780004663.2A CN108513691B (zh) 2017-10-30 2017-10-30 一种电机、电机控制系统、电机测温方法及无人飞行器
PCT/CN2017/108373 WO2019084721A1 (fr) 2017-10-30 2017-10-30 Moteur électrique, système de commande de moteur électrique, procédé de mesure de température de moteur électrique et véhicule aérien sans pilote

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Application Number Priority Date Filing Date Title
PCT/CN2017/108373 WO2019084721A1 (fr) 2017-10-30 2017-10-30 Moteur électrique, système de commande de moteur électrique, procédé de mesure de température de moteur électrique et véhicule aérien sans pilote

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WO2019084721A1 true WO2019084721A1 (fr) 2019-05-09

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