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A predictive control method for switched reluctance in-wheel motors

A wheel hub motor and predictive control technology, applied in the direction of AC motor control, control system, torque ripple control, etc., can solve the problem of less application, achieve fast and accurate determination, improve robustness, and reduce the effect of current ripple

Active Publication Date: 2021-02-12
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of predictive control in the field of switched reluctance in-wheel motors is still seldom

Method used

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  • A predictive control method for switched reluctance in-wheel motors
  • A predictive control method for switched reluctance in-wheel motors
  • A predictive control method for switched reluctance in-wheel motors

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Experimental program
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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050] The concrete implementation of the present invention divides following five steps,

[0051] Step 1. Establish a switched reluctance in-wheel motor control system, such as figure 1 shown. The system consists of iterative learning controller, MPC controller (predictive controller), compound object and rotational speed calculation module. Collect the current i of the compound object at time k k and the angle signal θ k , through the rotation speed calculation module through the angle signal θ k Calculate the rotational speed ω at time k k . The current i at time k to be collected k and the angle signal θ k Enter the MPC controller. The MPC controller will follow the given reference current value i ref , through the calculation of the cost function, so that the predicted current value i at the next moment k+1 Accurately track the reference curre...

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Abstract

The invention discloses a predictive control method for a switched reluctance hub motor, which belongs to the technical field of motor control. First collect the current i of the compound object at time k k and the angle signal θ k , through the rotation speed calculation module through the angle signal θ k Calculate the rotational speed ω at time k k , the current i at time k will be collected k and the angle signal θ k Input MPC controller, MPC controller will according to the given reference current value i ref , through the calculation of the cost function, so that the predicted current value i at the next moment k+1 Accurately track the reference current, the output is the duty cycle u k , used to adjust the conduction time of the switch tube of the power converter in the composite object, and the collected speed signal ω k Input the iterative learning controller, and give the reference speed ω ref , the given reference current i required by the MPC controller module can be obtained through this controller ref . The invention reduces the torque ripple, improves the robustness and accuracy of the system, and avoids human experience errors and high workload.

Description

technical field [0001] The invention relates to a method for predictive control of a switched reluctance hub motor, belonging to the technical field of motor control. Background technique [0002] In-wheel motor technology, also known as in-wheel motor technology, is characterized by the integration of power, transmission and braking devices into the wheel hub, thus greatly simplifying the mechanical parts of electric vehicles. It can omit a large number of transmission components, make the vehicle structure simpler, realize a variety of complex driving methods, and facilitate the adoption of various new energy vehicle technologies. [0003] Due to the increase in the price of permanent magnet materials, motors without permanent magnet materials have become a research hotspot. Switched Reluctance Motor (SRM) has many advantages: 1. Both the stator and the rotor have a salient pole structure, the windings are only distributed on the stator, and there are no windings on the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/098H02P6/10
Inventor 陈龙王浩祥孙晓东
Owner JIANGSU UNIV