Permanent magnet synchronous motor temperature rise protection method and system
A permanent magnet synchronous motor, temperature rise protection technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problem of not considering the heat dissipation process of the surrounding medium, unreasonable and other problems
Active Publication Date: 2014-10-29
SUZHOU INOVANCE TECH CO LTD
View PDF5 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a permanent magnet synchronous motor for the inverse time curve adopted in the inverse time design of the existing permanent magnet synchronous motor without taking into account the heat dissipation process of the surrounding medium, resulting in unreasonable defects. Temperature rise protection method and system
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
[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] see figure 1 , is a flowchart of a temperature rise protection method for a permanent magnet synchronous motor according to a preferred embodiment of the present invention. Such as figure 1 As shown, the temperature rise protection method of the permanent magnet synchronous motor provided in this embodiment includes the following steps:
[0031] First, in step S1, the total temperature rise equation is determined according to the heating power of the stator winding of the permanent magnet synchronous motor and the heat dissipation power of the surrounding medium, and the total temperature rise equation is normalized to obtain the differential equation of current and time , to solve the dynamic model of temperature rise. The specific imple...
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 a permanent magnet synchronous motor temperature rise protection method and system. The permanent magnet synchronous motor temperature rise protection method includes determining an overall temperature rise equation according to heating power of a stator winding of a permanent magnet synchronous motor and radiating power of radiating media, subjecting the overall temperature rise equation to normalization processing to obtain a differential equation of current and time, performing solving to obtain a temperature rise dynamic model, and obtaining an inverse time limit curve of current and time according to the temperature rise dynamic model. According to the permanent magnet synchronous motor temperature rise protection method and system, temperature rise conditions can be dynamically simulated through the temperature rise dynamic model, the influence of radiating of surrounding media is considered, and the influence of a motor speed on temperature rise is reflected through a counter electromotive force, so that designs of temperature rise protection are more reasonable.
Description
technical field [0001] The present invention relates to the technical field of permanent magnet synchronous motors, in particular to a temperature rise protection method and system for permanent magnet synchronous motors. Background technique [0002] In recent years, with the rapid development of power electronics technology, microelectronics technology, new motor control theory and rare earth permanent magnet materials, permanent magnet synchronous motors have been rapidly popularized and applied. Compared with the traditional electric excitation synchronous motor, the permanent magnet synchronous motor has the advantages of less loss, high efficiency and obvious power saving effect. The permanent magnet synchronous motor provides excitation with permanent magnets, which makes the structure of the motor relatively simple, reduces the cost of processing and assembly, and saves the collector ring and brush that are prone to problems, which improves the reliability of the mot...
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 Applications(China)
IPC IPC(8): H02H7/08
Inventor 匡两传
Owner SUZHOU INOVANCE TECH CO LTD