CN104617844A - Asynchronous motor control method for electric automobile - Google Patents
Asynchronous motor control method for electric automobile Download PDFInfo
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- CN104617844A CN104617844A CN201410762000.5A CN201410762000A CN104617844A CN 104617844 A CN104617844 A CN 104617844A CN 201410762000 A CN201410762000 A CN 201410762000A CN 104617844 A CN104617844 A CN 104617844A
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- asynchronous motor
- rotor
- control method
- motor control
- electric automobile
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Abstract
The invention relates to the technical field of automobiles, and in particular relates to an asynchronous motor control method for an electric automobile. The asynchronous motor control method is characterized by including the following steps of: monitoring the rotor angular speed, the feedback excitation current, the electromagnetic torque and the rotor time constant of the asynchronous motor in real time; obtaining a command rotor flux linkage according to the rotor angular speed, the electromagnetic torque and the rotor time constant of the asynchronous motor; obtaining a command excitation voltage component and a command torque voltage component according to the command rotor flux linkage, the rotation speed input by the user, the monitored rotor angular speed, the feedback excitation current and the electromagnetic torque of the asynchronous motor. The asynchronous motor control method for the electric automobile has the advantages that, the rotor angular speed, the feedback excitation current and the electromagnetic torque of an asynchronous motor are monitored in real time by the asynchronous motor control method and system for the electric automobile, the flux linkage for operating the asynchronous motor is adjusted and controlled accordingly, and thereby the command rotor flux linkage is accordingly optimized, energy losses are reduced, and the aim of improving the operation efficiency of the asynchronous motor is achieved.
Description
Technical field
The present invention relates to automobile technical field, particularly relates to a kind of asynchronous motor control method for electric automobile.
Background technology
Since international financial crisis, the developed countries such as U.S., Europe, Japan and Korea S., all at the Transformation Development of propelling vehicle industry, define the new round upsurge of new-energy automobile development in global range.In all technological innovations, motor drives has extremely important status, because the type of drive in future must be few power consumption, more environmental protection, have more sustainability.
Summary of the invention
The object of the invention is, in order to overcome above-mentioned deficiency, to propose a kind of asynchronous motor control method for electric automobile.
Scheme of the invention of the present invention is: a kind of asynchronous motor control method for electric automobile, comprises the steps: the rotor velocity of Real-Time Monitoring asynchronous machine, feedback excitation electric current, electromagnetic torque and rotor time constant; Instruction rotor flux is obtained according to the rotor velocity of asynchronous machine, electromagnetic torque and rotor time constant; According to the rotating speed of instruction rotor flux, user's input, described in the rotor velocity of asynchronous machine, feedback excitation electric current and the electromagnetic torque that monitor obtain instruction exciting voltage component and command torque component of voltage.
The present invention possesses following beneficial effect: in order to realize controlling accurately and effectively electric automobile asynchronous machine, we must pay attention to the impact of iron loss.Mainly containing two kinds of methods in the past for controlling asynchronous machine, is based on the method for loss model and the method based on on-line search optimization respectively.But these methods all lack the method for complete design speed regulator, and do not have traditional Liapunov stability analysis, the variable of estimation cannot ensure to converge to actual value, causes algorithm unreliable.Based on this, set up the asynchronous machine dynamic model that is considered iron loss, and then the more effective controller of design one is very necessary.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with specific embodiment.
Scheme of the invention of the present invention is: the fuzzy backstepping control method of electric automobile asynchronous machine, the dynamic model comprising the steps: to set up the asynchronous machine considering iron loss considers the dynamic model of the asynchronous machine of iron loss under synchronous rotary d-q coordinate, can be expressed as: fuzzy logic system is used to approach unknown nonlinear terms, and self adaptation Backstepping is used for the design of controller.
The present invention possesses following beneficial effect: rotor velocity, feedback excitation electric current, the electromagnetic torque of the above-mentioned asynchronous motor control method for electric automobile and system Real-Time Monitoring asynchronous machine thereof, and adjustment controls the magnetic linkage that asynchronous machine runs accordingly, thus optimize instruction rotor flux, reduce energy loss, reach the object of the operational efficiency improving asynchronous machine.Therefore, the electric automobile of this asynchronous motor control method and system thereof is adopted also just to have the high advantage of course continuation mileage.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. for an asynchronous motor control method for electric automobile, it is characterized in that, comprise the steps: the rotor velocity of Real-Time Monitoring asynchronous machine, feedback excitation electric current, electromagnetic torque and rotor time constant; Instruction rotor flux is obtained according to the rotor velocity of asynchronous machine, electromagnetic torque and rotor time constant; According to the rotating speed of instruction rotor flux, user's input, described in the rotor velocity of asynchronous machine, feedback excitation electric current and the electromagnetic torque that monitor obtain instruction exciting voltage component and command torque component of voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762000.5A CN104617844A (en) | 2014-12-12 | 2014-12-12 | Asynchronous motor control method for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762000.5A CN104617844A (en) | 2014-12-12 | 2014-12-12 | Asynchronous motor control method for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104617844A true CN104617844A (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410762000.5A Pending CN104617844A (en) | 2014-12-12 | 2014-12-12 | Asynchronous motor control method for electric automobile |
Country Status (1)
| Country | Link |
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| CN (1) | CN104617844A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007060897A (en) * | 2005-08-25 | 2007-03-08 | Internatl Rectifier Corp | Self-tuning method and device of permanent magnet sensorless control |
| CN103825522A (en) * | 2014-02-27 | 2014-05-28 | 株洲南车时代电气股份有限公司 | Method for online computing motor optimal operating point |
| CN103856134A (en) * | 2014-03-19 | 2014-06-11 | 西安交通大学苏州研究院 | Asynchronous motor control method and system for electric car |
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2014
- 2014-12-12 CN CN201410762000.5A patent/CN104617844A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007060897A (en) * | 2005-08-25 | 2007-03-08 | Internatl Rectifier Corp | Self-tuning method and device of permanent magnet sensorless control |
| CN103825522A (en) * | 2014-02-27 | 2014-05-28 | 株洲南车时代电气股份有限公司 | Method for online computing motor optimal operating point |
| CN103856134A (en) * | 2014-03-19 | 2014-06-11 | 西安交通大学苏州研究院 | Asynchronous motor control method and system for electric car |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150513 |