PMSM (permanent magnet synchronous motor) coordination control optimization method based on mechanical connection

A permanent magnet synchronous motor and synchronous motor technology, applied in the field of power electronics and power transmission, can solve problems such as mathematical models, complex algorithms, large overshoot, slow identification and correction, etc., to reduce the solution order and reduce the amount of calculation , good control performance effect
CN107947646AActive Publication Date: 2018-04-20CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2018-04-20

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Abstract

The invention discloses a PMSM (permanent magnet synchronous motor) coordination control optimization method based on mechanical connection, and the method comprises the steps: designing a single PMSMcontrol algorithm, determining a synchronous control structure of a dual-motor drive system, building a dual-PMSM dynamic mathematic model, writing the mathematic model into a singular perturbation system form, carrying out the decomposing of the subsystems, decomposing an optimal state adjustment problem and a performance index, solving a subsystem Riccati equation, combining optimal solutions of the subsystems into the optimal solution of a main system, and achieving the optimization of the dual-PMSM coordination control. The method can achieve the dual-PMSM coordination control through thereduction of the synchronization error between motors, and does not depend on the tracking error and control precision of a single motor for achieving the coordination control between motors. The method is simple in design, is easy to understand, is small in calculation burden, and is high in practicality. The method reduces the solving orders of the system through the singular perturbation theory, and reduces the calculation burden during system design.
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Description

technical field

[0001] The invention relates to an optimization method for coordinated control of double motors, which belongs to the technical field of power electronics and electric transmission, in particular to an optimized method for coordinated control of double permanent magnet synchronous motors with mechanical connection. Background technique

[0002] With the continuous improvement of industrial application technology, the traditional single-motor drive scheme can no longer meet the control requirements of complex systems, so we gradually began to study multi-motor drive schemes. Multi-motor systems are widely used in many fields, such as papermaking, belt conveyor, aerospace, rail transit [4] and other fields. The quality of the multi-motor coordination system directly affects the production efficiency and product quality, and even involves issues such as equipment service life and working environment safety. In the multi-motor synchronous control system, in the ...

Claims

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