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A fast calibration method, system and controller for a permanent magnet synchronous motor

A permanent magnet synchronous motor and calibration method technology, applied in motor control, motor generator control, electronic commutation motor control, etc., can solve problems such as low efficiency, motor overheating, poor safety, etc., and achieve the effect of improving calibration efficiency

Active Publication Date: 2021-02-05
NARI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a quick calibration method, system and controller of a permanent magnet synchronous motor, which solves the problem of poor security, low efficiency, and high current or high power calibration of the existing motor, which may easily cause the motor to overheat. warm question

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  • A fast calibration method, system and controller for a permanent magnet synchronous motor
  • A fast calibration method, system and controller for a permanent magnet synchronous motor
  • A fast calibration method, system and controller for a permanent magnet synchronous motor

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Embodiment Construction

[0043] 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.

[0044] Such as figure 1 , 5 As shown, a quick calibration method for permanent magnet synchronous motors, including steps:

[0045] Step 1, the dynamometer drives the motor at a certain speed n a Rotate, the target torque T* is set to zero; n a =Δn~n max , n max is the maximum speed n of the motor max , Δn is the speed step size;

[0046] Step 2, according to the speed n a Check the pre-calibrated data set in the full speed domain with the target torque T* to get the d and q axis target current i d *, i q *, with the d, q axis target current i d *, i q *As the current driving current to drive the permanent magnet synchronous motor to run, record the actual output torque T 2 and the ...

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Abstract

The invention discloses a quick calibration method, system and controller of a permanent magnet synchronous motor. Taking the pre-calibration data in the full current domain at the base speed of the motor as a sample, a pre-calibration table in the full speed domain is generated through off-line data processing, and the pre-calibration table is used Based on the rapid calibration correction experiment, the pre-calibration table is corrected, which improves the calibration efficiency, improves the safety of calibration above the base speed, and reduces the risk of motor overheating during high-current or high-power calibration.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a quick calibration method, system and controller of a permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the characteristics of small size, light weight and high efficiency, and is easy to be used as a traction motor for electric vehicles. For high performance motor control, motor calibration is required. At the highest motor speed n max and peak torque T max Corresponding peak current I max Within the range, the motor calibration experiment is carried out at the interval of the speed step Δn and the current step ΔI. At each speed and current, by adjusting the current angle γ, record the maximum torque that the motor can output. During calibration, the maximum output power of the motor should not exceed the peak power of the motor P max . Conventional motor calibration has the following problems: [0003] 1)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/22H02P29/60
CPCH02P21/22H02P29/60
Inventor 石春虎温传新黄全全骆健俞拙非徐建新杨志宏朱金大
Owner NARI TECH CO LTD