Simulation method and system for magnetism loss fault of permanent magnet synchronous motor and medium
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A permanent magnet synchronous motor, fault simulation technology, applied in the direction of electrical testing/monitoring, etc., can solve rare problems
Active Publication Date: 2019-03-29
CENT SOUTH UNIV
View PDF2 Cites 11 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
At present, the research on the simulation of permanent magnet synchronous motor loss of excitation usually assumes that all permanent magnets have the same degree of loss of excitation as the overall loss of excitation, and the research on the simulation of partial loss of excitation considering different degrees of permanent magnet loss at different positions is still rare.
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0100] see figure 1 , the present embodiment provides a method for simulating a loss-of-excitation fault of a permanent magnet synchronous motor, comprising the following steps:
[0101] S1: Establish the three-phase coordinate system of the permanent magnet synchronous motor in the case of a loss of field fault, calculate the first composite voltage of the permanent magnet synchronous motor in the three-term coordinate system, and convert the first composite voltage into a two-phase rotating coordinate system The second composite voltage;
[0102] S2: Determine the internal constraints required for model construction in the case of a permanent magnet synchronous motor loss of field fault based on the second synthetic voltage;
[0103] S3: Establish the torque equation of the permanent magnet synchronous motor, the rotor motion equation, and the internal voltage equation of the permanent magnet synchronous motor in the case of a loss of field fault according to the internal c...
Embodiment 2
[0177] Corresponding to the above method embodiments, this embodiment provides a permanent magnet synchronous motor loss-of-excitation fault simulation system, including:
[0178] The first unit is used to establish the three-phase coordinate system of the permanent magnet synchronous motor in the case of a loss of field fault, calculate the first composite voltage of the permanent magnet synchronous motor in the three-term coordinate system, and convert the first composite voltage into a two-phase The second synthetic voltage under the rotating coordinate system;
[0179] The second unit is used to determine the internal constraint conditions required for model construction in the case of a permanent magnet synchronous motor loss of excitation fault based on the second composite voltage;
[0180] The third unit is used to establish the torque equation of the permanent magnet synchronous motor, the rotor motion equation, and the internal voltage equation of the permanent magne...
Embodiment 3
[0189] This embodiment provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the above-mentioned method for simulating a loss-of-excitation fault of a permanent magnet synchronous motor are implemented.
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 the technical field of motors, and discloses a simulation method and a system for magnetism loss fault of a permanent magnet synchronous motor, and a medium. The authenticityand validity of the magnetism loss fault simulation of the permanent magnet synchronous motor are improved, and a more real and reliable environment is provided for the magnetism loss fault simulationof the permanent magnet synchronous motor. The method comprises the following steps of: establishing a three-phase coordinate system of the permanent magnet synchronous motor under the condition of the magnetism loss fault; calculating a first synthesized voltage of the permanent magnet synchronous motor in the three- phase coordinate system; converting the first synthesized voltage into a secondsynthesized voltage under a two-phase rotating coordinate system; determining an internal constraint condition required for model construction based on the second synthesized voltage when the permanent magnet synchronous motor has the magnetism loss fault; establishing a torque equation, a rotor motion equation, and an internal voltage equation of the permanent magnet synchronous motor accordingto the internal constraint condition under the condition of the magnetism loss fault; and constructing a magnetism loss fault simulator according to the parameters construction of the affected permanent magnet synchronous motor, and using the magnetism loss fault simulator to perform fault simulation.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a method, system and medium for simulating a loss-of-excitation fault of a permanent-magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the advantages of simple structure, small size, light weight, low loss, high efficiency, high power factor, etc. It is mainly used for the update of high-performance servo drive systems and DC motors that require fast response, wide speed range, and accurate positioning. Replacement motor. However, since permanent magnet synchronous motors use permanent magnets instead of excitation coils for excitation, the performance of permanent magnet synchronous motors is greatly affected by permanent magnets, and permanent magnets are prone to permanent magnet demagnetization failures due to the influence of electromagnetic fields. When a permanent magnet synchronous motor has a demagnetization fault, continu...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more