Development of monitoring unit for shaft generator set syetem with performances of variable speed and constant frequency

HONG Peng-peng1， NAN Yu-rong1， SHI Jian-jiang2
（1. College of Information Engineering， Zhejiang University of Technology， Hangzhou 310023， China；
2. College of Electrical Engineering， Zhejiang University， Hangzhou 310027， China）

Abstract： Aiming at solving the problems of low efficiency，high pollution and complex monitoring in the traditional hybrid propulsion system on ship，the shaft generator set system with performances of variable speed and constant frequency was applied in the new hybrid propulsion system. A four-quadrant inverter was added between the shaft generator and the micro grid on ship，whose performances were researched in different working modes. A monitoring unit was developed to communicate with the controllers through CAN bus and the ship information management platform through Profibus. A TMS320F28335 was applied as the controller of the monitoring unit，while the LCD module was used as the displaying interface. The display of system state，working parameters，commands and data transferred were all completed by the monitoring unit. The experimental results indicate that the new hybrid propulsion system can work steadily in different working modes，while reducing the pollution and improving the efficiency of the system. At the same time，the monitoring unit is human friendly with flexiable operating performance and the communication is stable and reliable，which is fit for industrial application.
Key words： shaft generator； rariable speed and constant frequency； hybrid propulsion system； monitoring unit； four-quadrant inverter；field bus