Construction method of intelligent controller of switched reluctance bsg system for hybrid electric vehicle

Abstract

The invention discloses a configuration method of an intelligent controller for a switch reluctance BSG system for a hybrid electric vehicle. A current controller module, a power conversion module and a switch reluctance motor are connected in series in sequence; then the series-connected part, a current detection module and a disturbance detection module are used as an overall equivalent switch reluctance BSG system; by configuration of an optimization controller, a supporting vector machine controller and a robustness controller of the switch reluctance BSG system, the dynamic and static characteristics of the system are effectively improved, and the anti-interference and robustness control capability of the system are remarkably improved; the controller is simple in design, convenient to implement, and relatively good in the control effect; the parameter time-variant characteristic, the load sudden change, and the external disturbance of the switch reluctance BSG system for the hybrid electric vehicle are equivalent to external disturbance variables of the switch reluctance BSG system; and in addition, the supporting vector machine is adopted to establish a nonlinear model of the anti-interference intelligent controller, so that the real-time property and the robustness of the controller are effectively improved.

Description

technical field [0001] The invention belongs to the field of hybrid vehicle control, in particular to a method for constructing an intelligent controller for a switched reluctance belt-driven starter generator (hereinafter referred to as BSG) system of a hybrid vehicle. Background technique [0002] Hybrid electric vehicles have outstanding advantages such as high efficiency and low pollution. The belt-driven starter generator (BSG) is one of the key components of hybrid electric vehicles, and the BSG is required to work efficiently and stably. BSG is different from the traditional automobile alternator in that it separates the starter from the generator. BSG integrates the starter and the generator to replace the original generator, which not only simplifies the engine design, but also reduces the weight of the vehicle. At present, BSGs are mostly hybrid excitation claw pole motors, induction motors or permanent magnet motors. However, for hybrid excitation claw pole motor...

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Problems solved by technology

[0003] At present, the control of the switched reluctance BSG system for hybrid vehicles adopts the angle position control, current chopping control and voltage chopping control methods commonly used in the industry, which is difficult to apply to the BSG system for hybrid vehicles, especially The complexity of the driving conditions of hybrid electric vehicles will inevitably bring about time-varying parameters of the switched reluctance BSG system, sudden load changes, and various random disturbances

Therefore, in order to essentially solve the problem of poor control effect of the conventional control method of the switched reluctance BSG system for hybrid electric vehicles, at the same time, it is necessary to ensure various control performance indicators of the switched reluctance BSG system for hybrid electric vehicles, such as dynamic response speed, Steady-state tracking accuracy and strong anti-interference ability require a new control method

[0004] Domestic patent applications published in the same technical field include: Chinese Patent Application No. 201410232599.1, titled "A Hybrid Electric Vehicle BSG Torque Fluctuation Compensation Controller and Its Construction Method", this patent document is aimed at the hybrid electric vehicle BSG system torque fluctuation A torque fluctuation compensation controller is designed to suppress torque fluctuations. The torque fluctuation compensation controller constitutes a current inner loop for the q-axis current by designing a current compensation module, which can only eliminate torque fluctuations, but cannot satisfy BSG system parameters are time-varying and the complex working conditions of load mutation; moreover, the object of the controller research is the ordinary AC motor, not the switched reluctance motor

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