CN106374788B - Control device for a permanently excited synchronous motor - Google Patents
Control device for a permanently excited synchronous motor Download PDFInfo
- Publication number
- CN106374788B CN106374788B CN201610567381.0A CN201610567381A CN106374788B CN 106374788 B CN106374788 B CN 106374788B CN 201610567381 A CN201610567381 A CN 201610567381A CN 106374788 B CN106374788 B CN 106374788B
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- China
- Prior art keywords
- synchronous motor
- commutation angle
- control device
- efficiency characteristic
- commutation
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 claims description 10
- 238000010845 search algorithm Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
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- 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
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
Abstract
The invention relates to a control device for a permanently excited synchronous motor (12), comprising a control unit (14) which is provided for detecting at least one efficiency characteristic variable of the permanently excited synchronous motor (12). According to the invention, the control unit (14) is provided for adapting a pre-commutation angle for maximizing an efficiency characteristic variable.
Description
Technical Field
The invention relates to a control device for a permanently excited synchronous motor.
Background
A control device for a permanently excited synchronous motor is disclosed, which accordingly has a control unit which is provided to detect an efficiency characteristic variable of the synchronous motor.
Disclosure of Invention
The invention relates to a control device for a permanently excited synchronous motor, comprising a control unit which is provided to detect at least one efficiency characteristic variable of the permanently excited synchronous motor.
The invention proposes that the control unit is provided for adapting a pre-commutation angle for maximizing the efficiency characteristic variable. "provided" is to be understood in particular as specifically programmed, laid down and/or designed. In particular, it is to be understood that an object is provided for a specific function, in which case the object carries out and/or implements the specific function in at least one operating state and/or operating state. A "control unit" is to be understood to mean, in particular, a unit having at least one control electronics. "control electronics" is to be understood to mean, in particular, a unit having a processor unit and having a memory unit and having an operating program stored in the memory unit. An "efficiency characteristic" is to be understood in this context to mean, in particular, a characteristic that contains at least one piece of information that allows the actual efficiency of the permanently excited synchronous motor to be directly or indirectly inferred. The efficiency characteristic variable can also be used to characterize the efficiency of the permanently excited synchronous motor.
In this context, provision is made for the control unit to adapt the pre-commutation angle for maximizing the efficiency characteristic variable, in particular to be understood in such a way that during operation of the permanently excited synchronous motor the control unit adapts the pre-commutation angle in the following manner: so that the efficiency characteristic variable has a relative or absolute maximum value. The control unit is preferably configured to obtain such a pre-commutation angle: and obtaining the maximum efficiency characteristic parameter under the pre-rectification angle.
This embodiment makes it possible to provide a control device of the type mentioned with improved characteristics with regard to efficiency optimization in a permanently excited synchronous motor.
Furthermore, it is proposed that the control unit is provided for actuating at least two different pre-commutation angles, preferably a plurality of pre-commutation angles, and for determining an efficiency characteristic variable for each pre-commutation angle. The control unit is preferably provided for varying the pre-commutation angle at least substantially continuously and/or quasi-continuously and for determining an efficiency characteristic variable for each pre-commutation angle. The control unit is provided in particular for comparing the efficiency characteristic variables determined with respect to the pre-commutation angle with one another and/or for determining such a pre-commutation angle, in particular by means of a search algorithm: the efficiency characteristic variable has a maximum value at the pre-commutation angle. In this way, a pre-commutation angle can be obtained in an advantageously simple manner, in which the efficiency characteristic variable has a maximum value.
The control unit is preferably provided for changing the commutation angle between a minimum value and a maximum value. This advantageously limits the pre-commutation angle to a meaningful value range and advantageously speeds up the acquisition of the following pre-commutation angles: and obtaining the maximum efficiency characteristic parameter under the pre-rectification angle.
Furthermore, it is proposed that the control unit has at least one rotational speed measuring device which is provided to continuously detect the actual rotational speed of the permanently excited synchronous motor. The control unit is provided in particular for determining a load moment and/or a mechanical power of the permanently excited synchronous motor as a function of the actual rotational speed of the permanently excited synchronous motor. In this way, at least one characteristic variable necessary for obtaining the efficiency characteristic variable can be detected in an advantageously simple manner.
It is also proposed that the control unit has at least one power measuring device, which is provided to continuously detect the electrical power of the permanently excited synchronous motor. The power measuring device has, in particular, at least one current sensor, which is provided to continuously detect the current consumption of the permanently excited synchronous motor. The power measuring device has, in particular, at least one voltage sensor, which is provided to continuously detect the input voltage of the permanently excited synchronous motor. In this way, at least one characteristic variable necessary for obtaining the efficiency characteristic variable can be detected in an advantageously simple manner.
Furthermore, it is proposed that the control unit is provided for calculating the efficiency characteristic variable at least as a function of the actual rotational speed and the electrical power. The efficiency characteristic variable can be calculated simply and/or quickly from the actual rotational speed and the electrical power and/or an actual efficiency can be derived.
Furthermore, a permanently excited synchronous motor having at least one control device according to the invention is proposed. The control device can be designed in particular as a separate component or be integrated completely or at least partially into the permanently excited synchronous motor, in particular into the housing of the permanently excited synchronous motor. The permanently excited synchronous motor can be provided in particular for driving at least one fan and/or a pump, in particular a water pump. A permanently excited synchronous motor with an advantageously optimized efficiency can thereby be provided.
Furthermore, a method for controlling and/or regulating a permanently excited synchronous motor is proposed, in which method at least one efficiency characteristic variable of the synchronous motor is determined, wherein a pre-commutation angle is adapted for maximizing the efficiency characteristic variable. The method can be combined in particular with methods using the applied characteristic and/or an inverse DQ model. This makes it possible to advantageously optimize the efficiency of the permanently excited synchronous motor.
The control device according to the invention, the method according to the invention and/or the permanently excited synchronous motor according to the invention should not be limited to the above-described applications and embodiments. The control device according to the invention, the method according to the invention and/or the permanently excited synchronous motor according to the invention can have a number which differs from the number of individual elements, components and units mentioned here in order to achieve the function described here. Furthermore, for the numerical ranges given in this disclosure, the numerical values within the mentioned boundaries should also be regarded as disclosed and can be arbitrarily used.
Drawings
Other advantages are given by the following description of the figures. An embodiment of the invention is shown in the drawings. The figures, description and claims contain several features in combination. It is also advantageous for the person skilled in the art to study these features individually and combine them into meaningful other combinations.
Wherein:
fig. 1 shows a block diagram of a control device for a permanently excited synchronous motor, which has a control unit that is provided to adapt a pre-commutation angle for maximizing an efficiency characteristic variable.
Detailed Description
Fig. 1 shows a permanently excited synchronous motor 12 with a control device 10. The permanently excited synchronous motor 12 is provided, for example, for driving a fan and/or a pump, in particular a coolant pump. The control device 10 has a cascade structure with respect to control technology. The control device 10 comprises an outer control loop 22 and an inner control loop 24. The outer control circuit 22 has a rotational speed controller 20. On the input side, the rotational speed controller 20 delivers the nominal rotational speed 26 and the actual rotational speed 28 of the permanently excited synchronous motor 12. The rotational speed controller 20 outputs a manipulated variable 30 for the internal control loop 24. The internal control loop 24 can comprise, for example, a pure voltage regulator, a current regulator with a voltage output 32 or a flux regulator with a voltage output 32. In order to optimize the efficiency of the actuation of the permanently excited synchronous motor 12, a rotor position-dependent voltage output 32 is combined with a pre-rectification.
The control device 10 has a control unit 14, which is provided to determine an efficiency parameter of the synchronous motor 12. The control unit 14 is provided to adapt the pre-commutation angle for maximizing the efficiency characteristic variable. Furthermore, the control device 10 has a rotational speed measuring device 16. The rotational speed measuring device 16 is provided for continuously detecting the actual rotational speed 28 of the permanently excited synchronous motor 12. Furthermore, the control device 10 has a power measuring device 18. The power meter 18 is provided for continuously detecting the electrical power of the permanently excited synchronous motor 12. The control unit 14 is provided to calculate the efficiency characteristic variable from the actual rotational speed 28 and the electrical power. Furthermore, the control device 10 has a rotor position transmitter 34. The rotor position transmitter 34 is provided for continuously detecting the rotor position of the permanently excited synchronous motor 12.
The control unit 14 is provided to obtain such a pre-commutation angle: the maximum efficiency characteristic variable is obtained in the pre-commutation angle. The control unit 14 is provided to control at least two different pre-commutation angles and to determine the efficiency characteristic variable for each pre-commutation angle. The control unit 14 is preferably provided to control a plurality of different pre-commutation angles and to determine the efficiency characteristic variable for each pre-commutation angle. The control unit 14 is provided to continuously vary the pre-commutation angle and to determine the efficiency characteristic variable for each pre-commutation angle. The control unit 14 is provided for varying the pre-commutation angle between a minimum value and a maximum value.
In order to optimize the efficiency of the permanently excited synchronous motor 12, the efficiency is first controlled by the control device 10 using a standard pre-commutation angle. In a further method step, the pre-commutation angle is changed from a standard pre-commutation angle between a maximum value and a minimum value. With regard to each used pre-commutation angle, the efficiency of the permanently excited motor synchronous machine 12 and/or an efficiency characteristic variable proportional to the efficiency is calculated accordingly by the control unit 14 using the detected actual rotational speed 28 and the electrical power. Such a pre-commutation angle is obtained in a further method step by means of a search algorithm: the efficiency of the permanently excited synchronous motor 12 and/or an efficiency characteristic variable proportional to the efficiency has a maximum value in the pre-commutation angle. The thus obtained pre-commutation angle is thus used to operate the permanently excited synchronous motor 12.
Claims (7)
1. A control device for a permanently excited synchronous motor (12), the control device (10) comprising an outer control loop (22) and an inner control loop (24), the outer control loop (22) having a rotational speed controller (20), the rotational speed controller (20) supplying a nominal rotational speed (26) and an actual rotational speed (28) of the permanently excited synchronous motor (12) to the rotational speed controller (20) at the input side, the rotational speed controller (20) outputting a manipulated variable (30) for the inner control loop (24), the inner control loop (24) being able to comprise a pure voltage regulator, a current controller having a voltage output (32) or a flux controller having a voltage output (32), the rotor position-dependent voltage output (32) being combined with a pre-commutation angle, the control device having a control unit (14), the control unit is provided for detecting at least one efficiency characteristic variable of the permanently excited synchronous motor (12), characterized in that the control unit (14) is provided for adapting a pre-commutation angle for maximizing the efficiency characteristic variable, the control unit (14) is provided for varying the pre-commutation angle at least substantially continuously and for determining the efficiency characteristic variable for each pre-commutation angle, the control unit (14) is provided for varying the pre-commutation angle between a minimum value and a maximum value from a standard pre-commutation angle, the control unit is provided for comparing the efficiency characteristic variables determined for the pre-commutation angles with one another and for detecting such pre-commutation angles by means of a search algorithm: the efficiency characteristic variable has a maximum value at the pre-commutation angle, which is adapted during the control of the synchronous motor, but not on the test stand.
2. The control device as claimed in claim 1, characterized in that the control unit (14) is provided for actuating at least two different pre-commutation angles and for determining the efficiency characteristic variable for each pre-commutation angle.
3. Control device according to claim 1 or 2, characterized in that the control device comprises at least one rotational speed measuring instrument (16) which is provided for continuously detecting the actual rotational speed (28) of the permanently excited synchronous motor (12).
4. Control device according to claim 3, characterized in that the control device comprises at least one power meter (18) arranged for continuously detecting the electrical power of the permanently excited synchronous motor (12).
5. The control device according to claim 4, characterized in that the control unit (14) is provided for calculating the efficiency characteristic variable at least as a function of the actual rotational speed (28) and the electrical power.
6. Permanent-magnet synchronous motor having at least one control device (10) according to one of claims 1 to 5.
7. Method for controlling and/or regulating a permanently excited synchronous motor (12) according to claim 6, in which method at least one efficiency characteristic variable of the synchronous motor (12) is obtained, characterized in that a pre-commutation angle for maximizing the efficiency characteristic variable is adapted, the pre-commutation angle is changed at least substantially continuously and is determined for each pre-commutation angle, the pre-commutation angle is changed from a standard pre-commutation angle between a minimum value and a maximum value, the efficiency characteristic variables determined for the pre-commutation angles are compared with one another and such pre-commutation angle is obtained by means of a search algorithm: the efficiency characteristic variable has a maximum value at the pre-commutation angle, which is adapted during the control of the synchronous motor, rather than on a test stand.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015213565.9A DE102015213565A1 (en) | 2015-07-20 | 2015-07-20 | Control device for a permanent magnet synchronous motor |
| DE102015213565.9 | 2015-07-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106374788A CN106374788A (en) | 2017-02-01 |
| CN106374788B true CN106374788B (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610567381.0A Active CN106374788B (en) | 2015-07-20 | 2016-07-19 | Control device for a permanently excited synchronous motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106374788B (en) |
| DE (1) | DE102015213565A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018211771A1 (en) * | 2018-07-16 | 2020-01-16 | Robert Bosch Gmbh | Method for operating an electrically commutated machine |
| DE102019101453A1 (en) * | 2019-01-21 | 2020-07-23 | Ebm-Papst Landshut Gmbh | Process for optimizing the efficiency of an electrically commutated machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001218490A (en) * | 2000-02-02 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Inverter device |
| CN101051806A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Novel electric driving control system and method for vehicle air conditioner compressor |
| CN101841291A (en) * | 2009-03-20 | 2010-09-22 | 中山大洋电机股份有限公司 | Method for controlling direct current brushless motor |
| CN102460945A (en) * | 2009-04-04 | 2012-05-16 | 戴森技术有限公司 | Control of an electric machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003200363A (en) * | 2001-12-26 | 2003-07-15 | Makita Corp | Battery type power tool |
| DE102004037378B4 (en) * | 2004-08-02 | 2006-10-26 | Siemens Ag | Method and device for power regulation of permanently excited synchronous electrical machines |
| DE102006007610A1 (en) * | 2006-02-14 | 2007-08-16 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Drive device for an adjusting device for adjusting a vehicle part and method for operating a drive device |
| JP2009303287A (en) * | 2008-06-10 | 2009-12-24 | Nidec Shibaura Corp | Motor controller |
| US8729841B2 (en) * | 2011-07-08 | 2014-05-20 | Allegro Microsystems, Llc | Electronic circuit and method generating electric motor drive signals having phase advances in accordance with a user selected relationship between rotational speed of an electric motor and the phase advances |
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2015
- 2015-07-20 DE DE102015213565.9A patent/DE102015213565A1/en active Pending
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2016
- 2016-07-19 CN CN201610567381.0A patent/CN106374788B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001218490A (en) * | 2000-02-02 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Inverter device |
| CN101051806A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Novel electric driving control system and method for vehicle air conditioner compressor |
| CN101841291A (en) * | 2009-03-20 | 2010-09-22 | 中山大洋电机股份有限公司 | Method for controlling direct current brushless motor |
| CN102460945A (en) * | 2009-04-04 | 2012-05-16 | 戴森技术有限公司 | Control of an electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106374788A (en) | 2017-02-01 |
| DE102015213565A1 (en) | 2017-01-26 |
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