EP1576721A1 - Ensemble circuit et procede pour faire fonctionner un moteur electrique sur un reseau a tension continue - Google Patents

Ensemble circuit et procede pour faire fonctionner un moteur electrique sur un reseau a tension continue

Info

Publication number
EP1576721A1
EP1576721A1 EP03813520A EP03813520A EP1576721A1 EP 1576721 A1 EP1576721 A1 EP 1576721A1 EP 03813520 A EP03813520 A EP 03813520A EP 03813520 A EP03813520 A EP 03813520A EP 1576721 A1 EP1576721 A1 EP 1576721A1
Authority
EP
European Patent Office
Prior art keywords
motor
commutation
rotary position
circuit arrangement
rotor
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.)
Withdrawn
Application number
EP03813520A
Other languages
German (de)
English (en)
Inventor
Stefan Koch
Peter Buerk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1576721A1 publication Critical patent/EP1576721A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H02P6/15—Controlling commutation time

Definitions

  • the invention is based on a circuit arrangement for operating an electric motor on a DC voltage network, in particular for operating a permanently magnetically excited DC motor on the DC voltage network of a motor vehicle, as has become known from DE 101 17 252 A.
  • This publication shows an electronically commutated two-phase electric motor with a rotor excited by permanent magnets and two windings in the stator alternately energized by control electronics via circuit breakers, with individual control periods per unit time being suppressed by the control electronics for regulating the electric motor.
  • the speed of the motor is specified by the control electronics from the comparison between an actual speed and a target speed, the publication making no information about the determination of the actual speed.
  • the use of Hall sensors is basically known for this.
  • electric motors with electronic commutation are also known for use in motor vehicles, which have a rotor equipped with permanent magnets and a stator carrying the windings.
  • motor vehicles the areas of application of such motors are in particular in the area of ventilation, pumps and adjustment drives.
  • the current fed in and the magnitude of the load torque determine the speed
  • the rotary movement results from the alternating energization of the stator windings from a DC voltage network, which is controlled on the basis of the rotor position.
  • the Control electronics are usually formed by a microcontroller ( ⁇ C) or a digital signal processor (DSP), whereby the commutation is controlled by a rotary position transmitter, the exact positioning of which is essential for maintaining the commutation time of the motor during operation.
  • ⁇ C microcontroller
  • DSP digital signal processor
  • the invention has for its object to enable the setting of the commutation time without mechanical adjustment, that is to say without changing the position of the rotary position sensor, taking into account existing tolerances of the individual motor.
  • This is achieved by the characteristic features of the higher-level circuit or method claims, which make it possible to compensate for the overall tolerances of mechanical, magnetic and electronic components after the motor has been assembled, and thus to optimize the efficiency of the motor.
  • this optimization means setting the highest possible delivery capacity of the motor for a given drive torque.
  • the electronic commutation control is formed by a microcontroller with a time delay in the output signals, which is preferably achieved by waiting cycles of the microcontroller after detection of the signal change of a rotary position transmitter.
  • the armature winding phases are expediently energized via electronic power output stages such as, for example, MOSFETs, to which the delayed output signals of the microcontroller are supplied as control signals.
  • the delay correction is preferably speed-dependent, in order to maintain the optimum commutation time according to the respective speed.
  • Bipolar Hall ICs are particularly suitable as rotary position encoders, which due to their small size and their insensitivity to elevated temperatures for installation in electric motors, are particularly suitable for the installation of the electric motors used in motor vehicles.
  • the circuit arrangement according to the invention and the method according to the invention can be used particularly advantageously in electric motors used in large numbers, in particular in the electric motors frequently used in motor vehicles with two armature strands wound in opposite directions, which are alternately energized via two electronic switches.
  • the electronic commutation correction of the signal of the rotary position transmitter which is set to an early commutation time during assembly, is possible in a particularly simple manner by the correct setting for the individual motor being determined once by an external measuring device and in a permanent memory of a microcontroller used as commutation control or in a external memory is saved. If the commutation control additionally receives the respective speed of the motor, determined, for example, from the distance between the signal edges of the rotary position transmitter, then the activation of the armature strands of the motor can also take place with a variable time delay.
  • 10 denotes a permanently magnetically excited, electrically double-stranded DC motor which is magnetically single-phase and is designed, for example, as a claw-pole motor.
  • the stator 12 there are two coils 14, 16 wound in opposite directions on a magnetic core 18.
  • One designated 20, two-pole or with one number of poles corresponding to an integral multiple of two trained rotor 20 of the motor 10 is designed as an inner rotor.
  • An embodiment of such a DC motor 10 has an inductance of 5-6 mH and a resistance of 1-3 ohms per coil.
  • the motor 10 is connected via two electronic switches 22, 24 to a DC voltage network with a positive pole 26 and a ground pole 28.
  • MOSFETs are preferably used as switches 22, 24.
  • the switches are electronic
  • Commutation control controlled by a microcontroller 30, which has two time delay elements T1, T2, which output the control signals to the switches 22, 24 with a delay.
  • a bipolar Hall IC 32 which is connected to the direct voltage source 26, 28 and which supplies the information about the position of the rotor 20 in accordance with the direction of flow N / S or S / N to the microcontroller 30, serves as the rotary position transmitter.
  • This also contains a permanent, non-volatile memory T, which serves as a long-term memory for the optimal commutation time measured by an external measuring device 34 for the individual motor, including all tolerances.
  • the value stored in the read-only memory T determines the correction of the speed sensor 30 adjusted during assembly to a premature commutation time.
  • an external memory can also be used instead of the internal memory T of the microcontroller.
  • the Hall IC 32 used as a rotary position transmitter is attached and adjusted to the stator 12 of the motor 10 so that it determines a premature position determined by the position of the rotor 20
  • Commutation time signals in accordance with the signal edge of the triggered by the variable magnetic field of the rotor Hall IC s 32.
  • the measure of the delay between the signal edge of the Hall IC s 32 and the signal output of the microcontroller 30 via the timing elements T1, T2 is determined by the measuring device 34 connected once to each motor and stored in the read-only memory T as a delay value ,
  • This is preferably in the form of a FLASH, an EPROM or an EEPROM, so that, in principle, a later correction of the delay value is also possible, for example due to tolerance changes that occurred during operation.
  • the position of the rotor 20 determines the coil 14, 16 to be energized, only one coil being energized in the magnetically single-phase motor shown. For example, when a signal from Hall IC 32 is received, only left motor coil 14 receives current. The switch 24 assigned to the right motor coil 16 remains open until an alternating edge of the signal of the Hall IC 32 corresponding to a change in the direction of flow of the rotor 20 reaches the microcontroller 30. At this time, the left coil 14 is switched off via the left switch 22 and the right coil 16 is energized with a delay. This delay is preferably variable in accordance with the speed of the rotor 20, since the ideal commutation time of the motor also changes with a variable speed.
  • the rotational speed of the rotor 20 is determined from the time interval between two signal edge changes of the Hall IC 32, which correspond to a change in the field direction of the rotor 20.
  • the measuring device 34 is not part of the individual motor 10, but rather belongs to the production devices for assembling the motors.
  • the microcontroller 30 receives in addition to the input signal of the Hall IC 32 via a further control input 36 a signal for the target speed of the motor 10, which is compared with the actual signal of the Hall IC 32 and switches the electronic switches 22, 24 on.
  • the essence of the invention is therefore the delay in the commutation time by waiting cycles within the microcontroller 30 after detection of a signal change supplied by the Hall IC 32.
  • the delay time is programmed once using the measuring device 34, taking into account the fundamentally constant overall tolerances of mechanical, magnetic and electronic components after the motor has been assembled, in order to optimize the efficiency of the motor, for example to optimize the delivery capacity of a pump motor.
  • the application of the invention is not limited to such a motor; rather, it can also be used in the same way for other electronically commutated motors, in particular for other brushless DC motors, and preferably when their commutation is detected by means of a Hall IC.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

L'invention concerne un ensemble circuit et un procédé pour faire fonctionner un moteur électrique sur une source de tension continue, en particulier pour faire fonctionner un moteur à courant continu à excitation par aimants permanents sur le réseau à tension continue d'un véhicule automobile, lequel ensemble circuit comporte un capteur de position angulaire (32) destiné à déterminer la position angulaire du rotor (20) et une commande de commutation électronique (30) prévue pour commuter le courant dans l'enroulement d'induit du stator (12) en fonction de la position du rotor (20). Selon la présente invention, ce capteur de position angulaire (32) est positionné par rapport au stator (12) dans l'objectif d'une commutation anticipée et l'instant de commutation effectif peut être ajusté dans la commande de commutation électronique (30) par le biais d'une correction de temporisation déterminée pour le moteur correspondant (10) par une mesure séparée.
EP03813520A 2002-12-18 2003-07-25 Ensemble circuit et procede pour faire fonctionner un moteur electrique sur un reseau a tension continue Withdrawn EP1576721A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10259173A DE10259173A1 (de) 2002-12-18 2002-12-18 Schaltungsanordnung und Verfahren zum Betreiben eines Elektromotors an einem Gleichspannungsnetz
DE10259173 2002-12-18
PCT/DE2003/002514 WO2004057751A1 (fr) 2002-12-18 2003-07-25 Ensemble circuit et procede pour faire fonctionner un moteur electrique sur un reseau a tension continue

Publications (1)

Publication Number Publication Date
EP1576721A1 true EP1576721A1 (fr) 2005-09-21

Family

ID=32477743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03813520A Withdrawn EP1576721A1 (fr) 2002-12-18 2003-07-25 Ensemble circuit et procede pour faire fonctionner un moteur electrique sur un reseau a tension continue

Country Status (5)

Country Link
US (1) US7038407B2 (fr)
EP (1) EP1576721A1 (fr)
JP (1) JP2006511184A (fr)
DE (1) DE10259173A1 (fr)
WO (1) WO2004057751A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7915869B2 (en) 2008-04-01 2011-03-29 Honeywell International Inc. Single stage starter/generator with rotor quadrature AC excitation
CN109842330B (zh) * 2017-11-24 2021-12-14 南京德朔实业有限公司 一种单相无刷电机的控制方法
CN114123875B (zh) * 2020-08-27 2023-09-22 致新科技股份有限公司 马达控制器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0920113A1 (fr) * 1997-11-28 1999-06-02 SAIA-Burgess Electronics AG Moteur à courant continu

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010435A1 (de) * 1980-03-19 1981-09-24 Papst-Motoren Kg, 7742 St Georgen Kollektorloser gleichstrommotor
US5847523A (en) * 1995-05-25 1998-12-08 Papst-Motoren Gmbh & Co. Kg Method of limiting current in a DC motor and DC motor system for implementing said method
US5739652A (en) * 1996-12-20 1998-04-14 General Motors Corporation Method and apparatus for sensorless operation of brushless permanent magnet motors
DE19720309A1 (de) * 1997-05-15 1999-09-30 Papst Motoren Gmbh & Co Kg Elektronisch kommutierter Motor
JPH11356088A (ja) * 1998-06-08 1999-12-24 Matsushita Electric Ind Co Ltd ブラシレスモータの駆動装置
US6020700A (en) * 1998-07-16 2000-02-01 Silicon Touch Technology Inc. DC brushless motor drive circuit having input signal compatability to hall effect ICs and hall sensors
JP3906429B2 (ja) * 1999-03-25 2007-04-18 株式会社豊田自動織機 同期モータの駆動装置
DE10117252A1 (de) * 2001-04-06 2002-10-17 Bosch Gmbh Robert Elektronisch kommutierter Elektromotor
US6747425B2 (en) * 2002-01-24 2004-06-08 Asahi Kasei Microsystems Co. Ltd System for sharing power and signal pins on a motor controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0920113A1 (fr) * 1997-11-28 1999-06-02 SAIA-Burgess Electronics AG Moteur à courant continu

Also Published As

Publication number Publication date
DE10259173A1 (de) 2004-07-08
JP2006511184A (ja) 2006-03-30
WO2004057751A1 (fr) 2004-07-08
US20050151493A1 (en) 2005-07-14
US7038407B2 (en) 2006-05-02

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