Signal injection-based PMSM stator winding temperature online detection method

A signal injection method and stator winding technology, applied in the field of computer systems, can solve the problems of not having the ability to adjust parameters online and poor self-adaptive ability, and achieve the effect of preventing overheating and improving performance

Inactive Publication Date: 2018-11-20
HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC
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AI Technical Summary

Problems solved by technology

[0010] In the prior art, the temperature estimation of the stator winding of the motor is prone to overshoot due to the use of the PID control algorithm, and it does not have the ability to adjust parameters online, so the self-adaptive ability is poor

Method used

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  • Signal injection-based PMSM stator winding temperature online detection method
  • Signal injection-based PMSM stator winding temperature online detection method
  • Signal injection-based PMSM stator winding temperature online detection method

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Embodiment Construction

[0067] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0068] Such as figure 1 As shown, the method for online detection of PMSM stator winding temperature based on signal injection provided by the embodiment of the present invention includes the following steps:

[0069] S101: Establish a real-time temperature observation method for the stator winding of the permanent magnet synchronous motor;

[0070] S102: Adding an optimal injection signal strategy to the temperature observation method in S101.

[0071] As a preferred embodiment of the present invention, the establishment process of S101 is as follows:

[0072] 1) Add vector control on the basis of the existing signal i...

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Abstract

The invention belongs to the technical field of computer systems, and discloses a signal injection-based PMSM stator winding temperature online detection method. The method comprises the steps of establishing a high-performance PMSM stator temperature online calculation method, and adding an optimal signal injection strategy into the online calculation method; adding vector control on the basis ofan existing signal injection method to form a new signal injection method; performing direct current component extraction in the new signal injection method; and calculating the stator resistance andthe estimated temperature and obtaining the real-time temperature observed data. The temperature of the stator winding of a permanent magnet synchronous motor is estimated online, so that the healthcondition of the motor can be monitored, and over-temperature generation can be prevented, and the methods can also be used in motor optimization control such as active heat management and the like, and is beneficial to improving the performance of an electric driving system.

Description

technical field [0001] The invention belongs to the technical field of computer systems, in particular to a method for online detection of PMSM stator winding temperature based on signal injection. Background technique [0002] With the global energy crisis and environmental pollution becoming increasingly prominent, new energy vehicles have become the future development direction of the international automobile industry, and the clarion call for its accelerated development has already sounded. In recent years, with the continuous advancement of power battery technology and electric drive technology, electric vehicles have become the commanding heights and growth points of new energy vehicles in the future, and are the common strategic choice of major countries and automobile manufacturers. It can be firmly believed that in the mileage towards a green future, electric vehicles are bound to gain broader development prospects. [0003] The electric drive system is the heart o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P29/64H02P25/022
CPCH02P21/14H02P25/024H02P29/64H02P2207/05
Inventor 刘建林
Owner HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC
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