Phase splitting tap-based switched reluctance motor system with fault tolerance function and fault diagnosis method of system
A technology for switching reluctance motors and faults, which is applied in the direction of fault locations, measuring electricity, electrical components, etc., can solve the problems of increasing control difficulty and limitations, and achieve the effect of structural modularization and easy control
Inactive Publication Date: 2015-12-30
ZHEJIANG UNIV
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However, while the improvement of the hardware improves the fault tolerance, some application fields are limited due to the change of the structure of the motor system; for the improvement of the software, the difficulty of control is increased under the premise of the same motor structure
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[0050] In order to describe the present invention more specifically, the technical solution and related working principles of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods, taking a three-phase 12 / 8-pole SRM as an example.
[0051] The switched reluctance motor system based on split-phase taps in the present invention includes a switched reluctance motor, a power converter, a speed detection device, a current sensor, a controller, and a fault-tolerant topology; wherein:
[0052] Such as figure 1 As shown, each stator winding of the switched reluctance motor consists of four windings; among them, the A-phase winding L a by winding L a1 , L a2 , L a3 with L a4 Composition, B-phase winding L b by winding L b1 , L b2 , L b3 with L b4 Composition, C-phase winding L c by winding L c1 , L c2 , L c3 with L c4 constitute.
[0053] Such as figure 2 As shown, the stator winding of...
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The invention discloses a phase splitting tap-based switched reluctance motor system with a fault tolerance function and a fault diagnosis method of the system. The system includes a switched reluctance motor, a power converter, a rotation speed detection device, a current sensor, a controller and fault tolerant topology. According to the switched reluctance motor system and the fault diagnosis method thereof of the invention, based on fault analysis and fault-tolerant operation of an SRM under a traditional control strategy, phase splitting tap-based switched reluctance motor fault diagnosis and fault tolerant topology under different control strategies can effectively ensure fault-tolerant operation of the motor when faults occur on the motor; the improvement of hardware and software is considered comprehensively; and a traditional asymmetrical half bridge and an inverter bridge are connected in parallel, so that the fault-tolerant operation of the motor can be stilled ensured when open-circuiting or short-circuiting faults occur on windings and switching tubes. The switched reluctance motor system has the advantages of structural modularization and easiness in control.
Description
technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a switched reluctance motor system with a fault-tolerant function based on split-phase taps and a fault diagnosis method thereof. Background technique [0002] Switched Reluctance Motor (Switched Reluctance Motor, SRM) is a new micro-motor developed in the 1980s. As a new type of speed control system with simple structure, good robustness and low price, it soon attracted the attention of electrical appliances in various countries. Widely valued by the transmission industry, it became one of the most popular speed-regulating motors in the 1980s. In recent decades, switched reluctance motors have developed rapidly and have received more and more attention, and have been applied to varying degrees in fields such as electric vehicles, household appliances, aviation, and general industry. Such as figure 1 As shown, the system is composed of doubly salient reluctance motor...
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IPC IPC(8): H02K29/00H02K11/00G01R31/02G01R31/08
Inventor 胡义华甘醇孙庆国王宁吴建德
Owner ZHEJIANG UNIV