A kind of motor winding preheating control method
A technology of preheating control and motor winding, applied in motor generator control, AC motor control, electronic commutation motor control, etc., can solve the problems of shutdown motor noise and motor winding temperature reduction.
Active Publication Date: 2018-02-16
SICHUAN CHANGHONG ELECTRIC CO LTD
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] The technical problem to be solved by the present invention is: to propose a motor winding preheating control method to solve the problems of motor winding temperature reduction, IPM over-current shutdown and high motor noise during preheating existing in the motor winding preheating scheme in the traditional technology
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] The invention aims to propose a motor winding preheating control method to solve the problems of motor winding temperature reduction, IPM overcurrent shutdown and high motor noise during preheating existing in the motor winding preheating scheme in the traditional technology.
[0024] When preheating is required, first modify the carrier frequency of the inverter to a value higher than the current carrier frequency, generally greater than 16KHz, to achieve low-noise preheating, and restore the carrier frequency of the inverter after the preheating is over. After entering the warm-up, the first positioning, the d-axis positioning target current I d0 Slowly increase from 0 to the target current I through a low-pass filter d0 ,Such as figure 2 As shown, avoid the occurrence of the IPM overcurrent problem caused by the sudden change of current. At this time, the q-axis positioning current command value I q is 0, positioning angle γ 0 is 0, the d-axis positioning curren...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to air conditioner control technology, which discloses a motor winding preheating control method, which solves the problems of motor winding temperature reduction, IPM overcurrent shutdown and high motor noise during preheating in the motor winding preheating scheme in the traditional technology. When entering the preheating control, switch the current carrier frequency of the inverter to a higher frequency. After the frequency switching is completed, when positioning for the first time, within T0 time, position the motor to the specified initial position γ0, and the positioning current vector remains still for T2 time , the motor winding is energized for T2 time, and then rotates and locates the current vector to the specified next position within the specified time T1 and then stops rotating. The current vector remains stationary for T2 time, and the motor winding is energized for T2 time. Rotate and position the current vector to the specified next new position within the time T1, and repeat the cycle until the end of preheating, restore the frequency converter carrier frequency, and complete the preheating of the motor windings. The invention is suitable for the preheating control of the air conditioner motor winding.
Description
technical field [0001] The invention relates to air conditioning control technology, in particular to a motor winding preheating control method. Background technique [0002] In order to prevent the lubricating oil of the outdoor compressor from being frozen in winter and solve the problem that the motor cannot be started, an electric heating belt is often used to heat the compressor to overcome the technical problem that the motor cannot be started. [0003] However, the electric heating belt will increase the product cost, so designers often look for technical solutions that do not increase the cost. [0004] The motor winding preheating method adopted in the patent "Winding Preheating and Starting Method of Permanent Magnet Synchronous Motor CN201210038725.0" can achieve the purpose of heating the motor, but there are the following problems: [0005] 1) Positioning and winding heating are used as a cycle, after positioning and heating by synthetic magnetic field F1 for a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/28H02P21/12H02P27/04
Inventor 陈跃刘启武
Owner SICHUAN CHANGHONG ELECTRIC CO LTD