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Permanent magnet motor offline parameter identification method and device

A permanent magnet motor and parameter identification technology, which is applied in the estimation/correction of motor parameters, AC motor control, electrical components, etc., can solve the problems of increasing the cost of servo drives, complicated adjustment of observer parameters, and difficulty in convergence, etc. Low, easy to achieve, low cost effect

Inactive Publication Date: 2020-04-17
SHENZHEN CITY SAMKOON TECH
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Problems solved by technology

However, the method of adding a voltage measurement circuit increases the cost of the servo drive, and the parameter adjustment of the observer is generally more complicated and difficult to converge

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  • Permanent magnet motor offline parameter identification method and device
  • Permanent magnet motor offline parameter identification method and device
  • Permanent magnet motor offline parameter identification method and device

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Embodiment Construction

[0032] In the following, the concept of the present invention and the technical effects produced by it will be clearly and completely described in conjunction with the embodiments to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work belong to The scope of protection of the present invention.

[0033] In the description of the present invention, if an orientation description is involved, such as "up", "down", "front", "rear", "left", "right", etc., the orientation or positional relationship indicated is based on the drawings. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the d...

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Abstract

The invention discloses a permanent magnet motor offline parameter identification method and device. The method comprises an excitation amplitude U determination step, a voltage drop compensation Vf determination step and a parameter calculation step. According to the method, step voltage is applied to a permanent magnet motor, the voltage drop compensation Vf value is calculated through an approximation model to solve the actual voltage of a motor coil, then parameter identification is carried out, and compared with the existing method that a detection circuit is added to measure the actual voltage of the motor coil and an observer is used for adjusting parameters, the method has the advantages of low cost and convenient implementation.

Description

Technical field [0001] The invention relates to the field of motor control, in particular to a method and device for identifying offline parameters of a permanent magnet motor. Background technique [0002] With the rapid development of power electronics technology, microelectronics technology and permanent magnet material technology and the continuous deepening of control theory research, the AC permanent magnet synchronous motor servo control system has been widely used due to its small size, light weight, and superior speed regulation performance. Applications. In practical applications, the resistance and inductance parameters of the permanent magnet synchronous motor are very important for the parameter calculation of the PI (Proportion Integration) controller. [0003] In the process of offline parameter identification of permanent magnet motors, due to the voltage difference between the excitation voltage actually applied to the motor coil and the command voltage, in order ...

Claims

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Application Information

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IPC IPC(8): H02P23/14H02P25/022
CPCH02P23/14H02P25/022
Inventor 宋斌朱思明
Owner SHENZHEN CITY SAMKOON TECH
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