Device and method for self-inspection of power switching device of permanent magnet synchronous motor
A technology of power switching devices and permanent magnet synchronous motors, which is applied in the field of permanent magnet synchronous motor control, can solve problems such as low safety and complex acquisition circuits, and achieve the effects of improving safety, shortening detection time, and reducing detection costs
Active Publication Date: 2021-12-17
无锡绿科源电子科技有限公司
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The present invention provides a device and method for self-inspection of power switching devices of permanent magnet synchronous motors to solve the problems of low security and complicated acquisition circuits of traditional power switching device self-inspection methods
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
[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0055] Such as figure 1 As shown, the present invention provides a device for self-inspection of a permanent magnet synchronous motor power switching device, comprising: an acquisition circuit, a three-phase stator winding of a permanent magnet synchronous motor, an inverter circuit, a controller; an acquisition circuit and a permanent magnet synchronous motor The three-p...
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 discloses a device for self-inspection of a power switching device of a permanent magnet synchronous motor, comprising: an acquisition circuit, a three-phase stator winding of a permanent magnet synchronous motor, an inverter circuit, and a controller; the acquisition circuit is synchronized with the permanent magnet The three-phase stator windings of the motor are connected to convert the terminal voltage of the three-phase stator windings of the permanent magnet synchronous motor; the inverter circuit is connected to the three-phase stator windings of the permanent magnet synchronous motor for The three-phase stator winding of the permanent magnet synchronous motor applies a voltage signal to realize the fault detection of the power switching device or drive the permanent magnet synchronous motor to rotate; the controller is connected with the acquisition circuit and the inverter circuit, and is used for the power switching device During the self-test process, input the detection signal and judge the feedback voltage information. The self-inspection device of the present invention not only does not increase the original hardware circuit, but also does not occupy more pins of the controller; there is no large current phenomenon in the detection process, and the safety of the detection is improved.
Description
technical field [0001] The invention relates to the field of permanent magnet synchronous motor control. More specifically, it relates to a device and method for self-testing of a power switching device MOS tube or IGBT in an inverter circuit of a permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the advantages of high efficiency, fast response and low noise. Therefore, permanent magnet synchronous motors have been widely used in more and more industries. [0003] The traditional self-inspection scheme of power switching devices in the inverter circuit of permanent magnet synchronous motor is to detect the power switching devices one by one. In the traditional self-test scheme, generally in a bridge arm of the drive circuit, a power switching device is turned on first, and then it is detected whether a large current is generated; if a large current is generated, it is determined that the bridge arm has a power swit...
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): G01R31/26G01R31/327
CPCG01R31/2601G01R31/327
Inventor 王浩陈魏海峰董鑫张懿李垣江
Owner 无锡绿科源电子科技有限公司