EP3794723A1 - Calibration and diagnosis device and method for electrical machines - Google Patents
Calibration and diagnosis device and method for electrical machinesInfo
- Publication number
- EP3794723A1 EP3794723A1 EP18743095.4A EP18743095A EP3794723A1 EP 3794723 A1 EP3794723 A1 EP 3794723A1 EP 18743095 A EP18743095 A EP 18743095A EP 3794723 A1 EP3794723 A1 EP 3794723A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- calibration
- electrical machine
- storage unit
- diagnosis device
- electrical
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000003745 diagnosis Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000011017 operating method Methods 0.000 claims abstract 4
- 238000004891 communication Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
Definitions
- the present invention refers to a device and a method for calibrating and diagnosing electrical machines, in particular synchronous reluctance electrical machines.
- the invention refers to a device for calibrating and diagnosing electrical motors, preferably synchronous reluctance motors assisted by permanent magnets, adapted to be installed on the motor to allow performing its optimum driving by an inverter connected thereto, and have a diagnostic situation of the motor during its operation.
- a control parameter of synchronous reluctance motors assisted by permanent magnets, used by the inverter, is the instantaneous angular position of the rotor magnetic poles.
- a calibration operation is performed to correct the error between the detected rotor position, for example by a position sensor, and the instantaneous rotor angular position, in particular the instantaneous angular position of the magnetic poles of the rotor.
- This calibration operation is performed upon coupling the inverter with the motor, before its installation, and the calibration data are stored in an inverter memory, to correct the mechanical error through an offset software; the stored calibration data are afterwards used for optimally driving the motor coupled thereto.
- Object of the present invention is solving the above prior art problems, by providing a device for calibrating and diagnosing electrical machines, adapted to be installed on the electrical machine, which allows performing its optimum driving, both during its first installation and during possible repairs and/or replacements thereof; another object of the invention is having a diagnostic situation of the machine during its operation; a further object is knowing the origin, in every instant of the machine life, of every major component thereof.
- Figure 1 shows a perspective view of a component of the device for calibrating and diagnosing synchronous reluctance electrical machines according to the invention.
- Figure 2 shows a block diagram of the device for calibrating and diagnosing synchronous reluctance electrical machines according to the invention.
- the calibration and diagnosis device 10 for electrical machines of the invention comprises: a position sensor 11 configured for being connected to a rotor of an electrical machine and adapted to measure the angular position of the rotor; a storage unit 14 in which data computed during the production of the electrical machine are stored and can be used for correcting errors between the rotor position detected by the position sensor 11 and the actual angular rotor position, as will be described below in more detail; and a microprocessor 15 connected to the position sensor 11 and to the storage unit 14 and adapted to store, in the storage unit 14, information detected by the position sensor 11, to manage and process information stored in the storage unit 14 and/or detected by the position sensor 11 and to communicate the processed data to an inverter 20 connected to the electrical machine through analogue 21 and/or digital communication lines 22, for example a communication can bus.
- the calibration and diagnosis device 10 for electrical machines of the invention further comprises at least one vibration sensor 12, for example comprising accelerometers of the MEMS type, adapted to detect vibration values of the electrical machine during its operation, said microprocessor 15 being further connected to the vibration sensor 12 and adapted to manage and process information detected by the vibration sensor 12, to store them in the storage unit 14 and to communicate the processed data to the inverter 20 through the analogue 21 and/or digital communication lines 22 to provide a diagnostic situation of the electrical machine during its operation.
- vibration sensor 12 for example comprising accelerometers of the MEMS type, adapted to detect vibration values of the electrical machine during its operation
- said microprocessor 15 being further connected to the vibration sensor 12 and adapted to manage and process information detected by the vibration sensor 12, to store them in the storage unit 14 and to communicate the processed data to the inverter 20 through the analogue 21 and/or digital communication lines 22 to provide a diagnostic situation of the electrical machine during its operation.
- data related to origin for example, manufacturing date/batch, identification number and supplier
- major component thereof for example, copper wire, magnets, stator and rotor packs, shaft, structures, etc.
- the electrical machine is a synchronous reluctance electrical motor assisted by permanent magnets.
- the position sensor 11 is a magnetic sensor comprising: a rotary element 16 connected to the rotor of the electrical machine and comprising a magnet; a fixed element 18, preferably comprising a plurality of hall -effect magnetic sensors of a known type.
- the calibration and diagnosis device 10 for electrical machines of the invention is adapted to be installed on the electrical machine, preferably on the synchronous reluctance electrical motor assisted by permanent magnets and preferably comprises a case inside which sensors 11, 12, storage unit 14 and microprocessor 15 are contained .
- the angular rotor position is measured; such data are compared with the value measured by the position sensor 11 of the device 10 of the invention to detect its error; the error value is then stored by the microprocessor 15 into the storage unit 14.
- the measure of the angular rotor position performed when producing the electrical machine comprises a step of mechanically pre aligning between the sensor magnet and a rotor magnet, followed by a step in which the electrical machine is actuated, thereby rotating the rotor, a following step of turning the electrical machine off, and a following step in which the machine is left rotate idle.
- the value of the angle of the magnetic field of the rotor is obtained by measuring the phase voltages of the machine, which are in phase with the magnetic flow.
- the vibration sensor 12 detects the machine vibrations at certain time intervals, and such data are stored by the microprocessor 15 into the storage unit 14.
- Data stored into the storage unit 14 are saved and processed by the microprocessor 15, and communicated to the inverter 20, for example through the analogue 21 and/or the digital communication lines 22, to drive the electrical machine, in particular the motor, using the actual value of the angular position of the rotor and to perform a diagnosis of the degrade of the motor in time .
- the inverter 20 performs the diagnosis of the degrade of the electrical machine in time by processing data detected by the vibration sensor 12 supplied by the microprocessor 15 to the inverter 20, together with other data available to the inverter 20 (rotation speed, torque) .
- data detected by the vibration sensor 12 supplied by the microprocessor 15 to the inverter 20, together with other data available to the inverter 20 (rotation speed, torque) .
- the inverter stores on the device 10 of the electrical machine the measured vibrations value.
- the inverter is able to establish the degrade condition of the electrical machine.
- These data stored in the storage unit 14 deal for example with: magnetic rotor angle, serial number and type of motor, serial/batch number, manufacturing date, value of motor performances in time to measure its degrade caused by the increase of the vibrations, comparing data detected by the vibration sensor 12, stored into the storage unit 14 by the microprocessor 15 during the motor life.
- the calibration and diagnosis device 10 for electrical machines of the invention allows a better representation of the magnetic pole of the rotor through the correction of the mechanical error through an offset software stored in the device memory.
- the calibration and diagnosis device 10 for electrical machines of the invention allows having a forecast of the machine life by processing the vibration levels, and knowing the origin, at any time during the electrical machine life, of every major component thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2018/000073 WO2019220470A1 (en) | 2018-05-18 | 2018-05-18 | Calibration and diagnosis device and method for electrical machines |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3794723A1 true EP3794723A1 (en) | 2021-03-24 |
Family
ID=62976105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18743095.4A Pending EP3794723A1 (en) | 2018-05-18 | 2018-05-18 | Calibration and diagnosis device and method for electrical machines |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3794723A1 (en) |
CN (1) | CN112425060A (en) |
WO (1) | WO2019220470A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111624484A (en) * | 2020-05-28 | 2020-09-04 | 歌尔科技有限公司 | Automatic calibration method and system for vibration motor and electronic device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2038993A2 (en) * | 2006-07-10 | 2009-03-25 | Seiko Epson Corporation | Electric motor, drive system employing multiple electric motors, and method for controlling the same |
JP2009109350A (en) * | 2007-10-30 | 2009-05-21 | Jfe Advantech Co Ltd | Monitoring and diagnosing system for rotary machine apparatus |
DE102008010964A1 (en) * | 2008-02-25 | 2009-08-27 | Continental Automotive Gmbh | Method of operating an actuator and actuator |
JP4900738B2 (en) * | 2009-06-30 | 2012-03-21 | アイシン・エィ・ダブリュ株式会社 | Electric motor drive control device |
DE102010001427A1 (en) * | 2010-02-01 | 2011-08-04 | Robert Bosch GmbH, 70469 | Sensor unit for attachment to an electric machine and motor system |
KR101283963B1 (en) * | 2012-03-20 | 2013-07-09 | 전자부품연구원 | Compensation method for position of hall sensor of bldc motor used by counter electro-motive force and bldc motor thereof |
EP2675059A1 (en) * | 2012-06-15 | 2013-12-18 | SICK STEGMANN GmbH | Drive system |
JP6026812B2 (en) * | 2012-08-10 | 2016-11-16 | 日立オートモティブシステムズ株式会社 | Motor control device including motor unit and inverter unit |
DE102013203388B3 (en) * | 2013-02-28 | 2014-03-20 | Schaeffler Technologies AG & Co. KG | Rotor position sensor for an electronically commutated electrical machine with a reference encoder |
CN205647195U (en) * | 2016-05-23 | 2016-10-12 | 西安安凡达智能电机有限公司 | Synchronous servo motor of intelligence permanent magnetism |
-
2018
- 2018-05-18 WO PCT/IT2018/000073 patent/WO2019220470A1/en unknown
- 2018-05-18 EP EP18743095.4A patent/EP3794723A1/en active Pending
- 2018-05-18 CN CN201880095712.2A patent/CN112425060A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN112425060A (en) | 2021-02-26 |
WO2019220470A1 (en) | 2019-11-21 |
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