Power Balance Control Strategy of Permanent Magnet Synchronous Motor of Belt Conveyor

Abstract

Aiming at the problem of multi-machine power balance control of long distance belt conveyor with double drum and three permanent magnet synchronous motor, the control method of speed and torque of master and slave motors of belt conveyor driven by multiple motors is analyzed. According to the properties of coaxial rigid connection and flexible connection of three motors of double drum, The power balance strategy based on fuzzy Active Disturbance Rejection Controller (ADRC) is proposed to achieve the purpose of disturbance rejection and improve the stability of the system. The simulation results show that the proposed method can solve the power imbalance problem of the system motor. Compared with the traditional PID control method, the corresponding speed of fuzzy ADRC control method is less than 300ms, the power deviation of rigid connected motor is less than 0.1kW, and the power deviation of flexible connected motor is less than 0.3kW. This method can effectively reduce the synchronization error of each motor, and has good robustness, and realize the power balance distribution among multiple motors.

Optimization study of multi-motor power balance control

“…Nowadays, high speed, long distance, energy saving and intelligence have been the basic requirements and mainstream development trend of belt conveyor design at home and abroad. However, this trend increases the transportation volume and improves the transportation efficiency on the one hand [3] , and on the other hand, a series of complex control problems that did not appear in the original low-speed and short-distance belt conveyor system begin to come to the fore, such as how to further improve the energy utilization rate under the premise of guaranteeing the stability and safety of large-scale and complex non-linear transportation system operation in order to reduce the cost of production of enterprises.…”

MPC-Based Coordination Control of Dual Direct-Drive Permanent Magnet Motors Used in Coal Mining Belt Conveyors

“…Second, the utilization of gear structures induces wear and escalates maintenance expenses [3]. Third, asynchronous motors typically employ variable frequency control methods grounded on the voltage-tofrequency (V/F) concept, which results in suboptimal overall energy efficiency and an incapacity to meet the demands of contemporary high-efficiency systems [4]. On these grounds, the conveyor belt system driven by dual direct-drive permanent magnet motors (PMMs), as depicted in Fig.…”