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Fault-tolerance control method of multi-mode dual-channel switched reluctance motor system

A switched reluctance motor, fault-tolerant control technology, applied in the direction of motor control, AC motor control, control system, etc., can solve the problems of motor and inverter redundancy, lack of output torque, failure to play, etc.

Active Publication Date: 2018-04-24
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can realize fault-tolerant operation after a channel motor fails, the method of directly cutting off the motor of the faulty channel and using only one channel of motor operation will cause a large loss of output torque after the fault, and also make the faulty motor The motors and inverters of that channel become very redundant and do not play any role under the fault

Method used

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  • Fault-tolerance control method of multi-mode dual-channel switched reluctance motor system
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  • Fault-tolerance control method of multi-mode dual-channel switched reluctance motor system

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Embodiment Construction

[0066] The technical solutions in the embodiments of the present invention will be described in detail and completely below in conjunction with the drawings in the embodiments of the present invention.

[0067] A fault-tolerant control method for a multi-mode dual-channel switched reluctance motor system is characterized in that it includes a stator, a rotor, two sets of windings and two standard three-phase inverters.

[0068] The cross-sectional view of the multi-mode dual-channel switched reluctance motor is as follows figure 1 shown.

[0069] The stator has 12 stator slots in total, and the stator slots adopt a trapezoidal slot structure, and the stator teeth of the stator adopt a straight tooth structure, and the radian of each stator tooth is 15°.

[0070] The rotor is an 8-pole switched reluctance rotor, and the arc of each rotor pole is 15.75°.

[0071] The two sets of windings both adopt a concentrated winding structure, and each set of windings contains six coils. ...

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Abstract

The invention discloses a fault-tolerance control method of a multi-mode dual-channel switched reluctance motor system. A stator, a rotor, two sets of windings and two standard three-phase inverters are included. A star connection mode is adopted by the two sets of windings, and neutral points are connected together. The two standard three-phase inverters drive the two sets of windings to form themulti-mode dual-channel switched reluctance motor system. The system has two operation modes. An operation mode 1 is a traditional three-phase switched reluctance motor operating mode driven by an H-bridge inverter, and driving current is a square wave. An operation mode 2 is a double-inductance coupled switched reluctance motor mode, and the drive current is a sine wave. When the system has a switch device fault, the operation mode 1 is selected to carry out fault-tolerance control, and when the system has a phase open-loop fault, the operation mode 2 is selected to carry out fault-tolerancecontrol. According to the fault-tolerance method, the remaining control freedom of the system after the fault is fully used, the invariability of an average output torque before and after the fault is ensured, and the torque ripple can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of motor fault-tolerant control, in particular to a fault-tolerant control method for a multi-mode dual-channel switched reluctance motor system. It is suitable for occasions that have high requirements on the reliability of motors, such as aerospace, electric vehicles, and ship propulsion systems. Background technique [0002] Due to its simple and sturdy structure, switched reluctance motors have gained widespread attention and applications in fields that require high reliability or harsh working environments such as aerospace, electric vehicles, and coal mining. In the switched reluctance motor system, the controller and inverter are relatively weak links in reliability. A dual-channel structure can be used to divide the windings of the switched reluctance motor into two groups, which are composed of two independent controllers and inverters. device to control. [0003] In the traditional two-channel sw...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/16H02K3/28H02P25/092H02P29/028
CPCH02K1/146H02K1/165H02K3/28H02K2213/03H02P25/092H02P29/032
Inventor 陈前刘国海赵文祥王健林志鹏徐高红
Owner JIANGSU UNIV
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