KEYWORDS: Digital signal processing, Control systems, Data conversion, Device simulation, Design and modelling, Control systems design, Computer simulations, Data communications
Aiming at the problem of prime mover speed variation caused by frequent load variation of Marine diesel generator set under actual operating conditions, a speed control system of Marine diesel generator sets based on DSP is designed, the speed control principle of Marine diesel generator sets is analyzed, and the hardware block diagram and software flow of the system are designed. In terms of hardware, the TMS320F28335 chip is used as the core components. Regarding the software aspect, a model for the marine diesel generator set has been simply constructed. Serial port to Ethernet interface is used to complete the communication between DSP hardware environment and Simulink environment, and the hardware in loop semi-physical simulation of the system is realized. By adjusting PID parameters, the system simulation waveform changes were analyzed. Finally, the DSP controller performance is verified by increasing and reducing the load abruptly. The results obtained from the simulation indicate that the speed control system possesses high response speed, good stability and strong tracking ability
The land power system has a great number of long-distance lines, and the connectivity between power grids is inadequate, resulting in negative damping of the power system. The PSS+AVR excitation control approach has been widely utilized in the single machine infinite bus power grid. The distribution line was short in the early ship power system, and the power system stabilizer was rarely employed. High-power propulsion motors have become one of the most important burdens on ships as a result of the widespread usage of marine integrated electric propulsion systems. we use pss2B to the excitation management of a zonal distribution power system, taking into account the ship power station's significant nonlinear characteristics. The comparison results suggest that pss2B may be employed in ship power systems and has a positive effect on load disturbance under various working situations.
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