Research on Integrated Technology of High Speed Maglev Motoring Control

Abstract

In a high speed maglev transportation system, in order to improve train operation performances and reduce human errors, high speed maglev must use automatic driving to control the train. Motoring control system is an important subsystem to realize train operation drive. It is deployed in ground motoring substations, and its controlled linear motor stator are deployed along the line. In order to achieve high reliability and high real-time train operation, driving control function is bound to be integrated into motoring system. However, there is no implementation scheme of motoring control system integrating driving control function. Therefore, this paper proposes a motoring control integration technology of high speed maglev system, which adds step-change function of stator section on basis of traditional logic control function, and integrates functions of acceleration and deceleration limit, jerk rate limit and motoring/braking switching in traditional motoring control scheme into the driving control system. Under the coordination of instructions of the operation control system, integration of logic control, driving control and step change control functions of maglev traction system is realized. This paper introduces the fusion characteristics of motoring control and driving control in the integrated control system. At the same time, based on the characteristics of current variation of high speed maglev traction system, a compensation curve calculation scheme is proposed in driving control. Hardware in loop simulation test results show that the proposed scheme adapts to the stator step changing characteristics of high-speed maglev traction system, the established operation plan can be tracked, the train operation speed is stable without overspeed trigger phenomenon, the parking accuracy is high and the response of control command is good in real time. The motoring control integration technology scheme has been used in a high speed maglev test line, and the whole system integration test including vehicle system, operation control system and motoring system has been completed. The results show that the control delay of the integration scheme is short, the speed control accuracy reaches 1 km/h, and the parking meets the accuracy requirements of ± 30 cm, which strongly demonstrates the feasibility and availability of this scheme.

Keywords

• high speed maglev transportation system
• automation train operation
• motoring control system
• logic control
• driving control
• step change control