Asynchronous motor speed control device and system based on novel rotor flux observer
A technology of speed control device and rotor flux linkage, which is applied in the direction of electronic commutation motor control, control system, vector control system, etc. It can solve the problems of slow simulation speed and poor observation performance of rotor flux observer
Inactive Publication Date: 2014-09-03
雷勃电气(岳阳)有限公司
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[0004] In order to overcome the shortcomings of the existing asynchronous motor model simulation speed and poor observation performance of the rotor flux observer, the present invention provides an asynchronous motor speed control device and system based on a new rotor flux observer, which can not only improve the system simulation speed , and can more accurately observe the rotor flux value, to achieve a wide range of speed regulation performance
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[0033] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0034] A speed control device for an asynchronous motor based on a rotor flux observer, characterized in that it includes an asynchronous motor module, a rotor flux observer, a Park transformation module, an inverse Park transformation module, a d-axis current controller, and a q-axis current controller , a speed controller, a first comparison module, a second comparison module and a third comparison module.
[0035] The asynchronous motor module includes rotor module, stator improvement module, mutual inductance flux module, torque module and motion module.
[0036] The rotor module is provided with a first input, a second input, a third input, a first output and a second output.
[0037] The ...
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The invention discloses an asynchronous motor speed control device and system based on a novel rotor flux observer. The system is characterized by comprising an asynchronous motor module, the rotor flux observer, a Park conversion module, an inverse Park conversion module, a d-axis current controller, a q-axis current controller, a speed controller, a first comparison module, a second comparison module and a third comparison module, and the asynchronous motor module comprises a rotor module, a stator module, an mutual induction flux module, a torque module and a movement module. The system and the method have the advantages that the rotor flux observer is improved and added to an asynchronous motor so that the system simulation velocity can be effectively increased, the rotor flux value can be accurately observed and wide-range speed regulation performance can be achieved; the function of measuring the electrical angular speed signal omega r of a rotor in real time is added through the rotor flux observer, good control performance can be kept when the asynchronous motor runs at a high speed or a low speed, and the steady state errors are small.
Description
technical field [0001] The invention relates to an asynchronous motor speed control device and system based on a rotor flux observer, and belongs to the technical field of AC servo motor control. Background technique [0002] Asynchronous motors have outstanding advantages such as high reliability, high efficiency and low cost, and are widely used in modern industry, civil and military fields. [0003] Because the mathematical model of the asynchronous motor is complex and highly nonlinear, and the system parameters will change with the change of the working conditions, it brings great difficulty to the control of the asynchronous motor. At present, in most high-performance applications, the most commonly used method to control asynchronous motors is vector control, but there are problems such as slow speed and long time consumption. Contents of the invention [0004] In order to overcome the shortcomings of the existing asynchronous motor model simulation speed and poor ...
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Inventor 施昕昕黄家才温秀兰林健李春
Owner 雷勃电气(岳阳)有限公司