Permanent magnet synchronous motor control method for mechanical elastic energy storage based on incremental backstepping control

Abstract

The invention discloses a permanent magnet synchronous motor control method for mechanical elastic energy storage based on incremental backstepping control. According to the technical scheme, the method comprises: firstly, establishing a mechanical elastic energy storage system mathematical model with a PMSM as a driving mechanism and a volute spiral spring as a load; then, introducing virtual control quantity q-axis current and d-axis current, obtaining q-axis voltage uq and d-axis voltage ud of an increment controller by adopting a backstepping design method and an increment control principle, and achieving control over the permanent magnet synchronous motor; and finally, determining the parameter value range of the incremental backstepping controller, and verifying the accuracy of the algorithm by using a simulation experiment. Compared with a back-stepping control algorithm, the method has the advantages that the robustness is high, the tracking speed of reference signals is higher, the dynamic performance is better, and stable energy storage of the mechanical elastic energy storage system is achieved.

Description

technical field [0001] The invention relates to the field of power system energy storage, and relates to a control algorithm of a permanent magnet synchronous motor for mechanical elastic energy storage, in particular to a control method for a permanent magnet synchronous motor for mechanical elastic energy storage based on incremental reverse push control [0002] technical background [0003] The dual pressure of environmental pollution and energy consumption has prompted my country to propose the development goal of building a new power system with new energy as the main body. The output of new energy is random and intermittent, which changes the inherent characteristics of controllable and adjustable output on the power side of the traditional power system. In order to deal with the system power imbalance problem caused by intermittent new energy output, the development of energy storage technology is one of the most effective ways. [0004] Compared with other energy st...

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Problems solved by technology

The mechanical elastic energy storage system realizes energy storage by controlling the permanent magnet synchronous motor to tighten the coil spring. The research shows that the traditional vector control of the permanent magnet synchronous motor is difficult to adapt to the nonlinear characteristics of the mechanical elastic energy storage system such as multivariable, strong coupling and time-varying load characteristics.

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