Abstract

A variant of a diesel generator power plant consisting of a conventional diesel-generator set and a variable-speed diesel-generator set is considered. A transformer-free topology of the power circuit of the variable-speed diesel-generator set is proposed on the basis of an active voltage rectifier, a mains inverter, and a buffer energy storage device. The block diagram for controlling a diesel-generator power plant is developed. The autonomous and parallel operation modes of the diesel-generator sets are considered. A block diagram of the speed controller on the basis of intelligent controls is proposed for the variable-speed diesel generator set. The simulation model of the diesel-generator power plant is implemented in the MATLAB/Simulink suite. Results of simulation modeling of the power plant’s dynamic operational modes under load switching are presented. The variable-speed diesel-generator set is shown to provide energy-efficient operation of the power plant and compliance with the requirements for the quality of generated electricity when the internal combustion engine runs at low energy efficient rotation speeds in the shared load mode.

中文翻译：

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提高柴油发电机组的效率

摘要

考虑了由常规柴油发电机组和变速柴油发电机组组成的柴油发电机发电厂的变型。提出了一种基于有源整流器，市电逆变器和缓冲储能装置的变速柴油发电机组功率电路的无变压器拓扑结构。开发了用于控制柴油发电机组的框图。考虑了柴油发电机组的自主和并联运行模式。提出了基于智能控制的变速柴油发电机组速度控制器的框图。柴油发电机组的仿真模型是在MATLAB / Simulink套件中实现的。给出了负荷切换下电厂动态运行模式的仿真建模结果。当内燃机在共享负载模式下以低能效旋转速度运行时，可变速柴油发电机组显示为可提供动力装置的节能运行并符合发电质量要求。