基于DSP的岸电电源研究与设计

发布时间：2018-09-19 16:51

【摘要】：针对目前环境污染带来的危害以及人类日益重视到节能减排和环境保护重要性的大背景下,使用岸电电源系统代替船用发电机能够有效地抑制靠岸船舶作业引起的港口环境污染问题。因此,使用岸电电源替代船舶柴油发电机动力成为现在应对港口环境污染的重要举措和热点话题。本论文所研究实现的岸电电源是为船舶靠港工作时提供电能的变换装置,其功能是实现将工频三相380V/50Hz的交流电能变换为供船舶用电器相匹配的电压和频率供给船舶用电器工作使用。岸电电源系统设计主要包括大功率电力电子变压变频模块设计、船舶与岸电快速无缝切换模块设计两大部分。本论文重点研究大功率电力电子变压变频模块,提出了基于DSP芯片TMS320F2812的变压变频电路设计、采用正弦脉宽调制(SPWM)技术控制策略,采用数字化方法减小了控制电路的复杂性、提高了控制电路稳定性和安全性以及逆变器的灵活性,其中包括SPWM波的软件生成方法、数字式PID算法的软件实现等。硬件设计针对三相整流逆变器主电路和控制电路两大部分,包括三相不控整流桥、功率因数校正电路、三相全桥逆变器、滤波电路、输出电压频率采样电路、调理电路、三相桥驱动电路、辅助供电电路设计以及人机交流界面设计等。使用MATLAB/Simulink软件对三相整流逆变电路各个模块以及整体系统进行了模拟仿真,仿真结果表明,频率、幅值和输入功率因数都得到有效控制,该岸电系统有良好稳态精度和动态性能。电压谐波系数达到了预期值3%、输入电流连续且功率因数达到0.9、输出频率误差小于0.5%、系统超调量减小到16.2%以及系统在0.05s后处于稳定。验证了系统设计方案满足其指标要求。该岸电电源具有效率高、过载能力强、稳定性能高且可灵活切换等优点,在未来可以供船舶用电系统使用。
[Abstract]:Against the background of the harm caused by environmental pollution and the importance of energy saving and environmental protection, The use of onshore power supply system instead of marine generators can effectively suppress the port environmental pollution caused by the operation of docking ships. Therefore, the use of shore power instead of marine diesel generator power has become an important measure and hot topic to deal with the port environmental pollution. The onshore power supply, which is studied in this paper, is a conversion device to provide electrical energy for ships working in port. Its function is to convert the AC electric energy of the three-phase power frequency 380V/50Hz into the voltage and frequency matching voltage and frequency for marine electrical appliances. The design of shore power supply system mainly includes two parts: the design of high power electronic variable voltage conversion module and the design of fast seamless switching module between ship and shore power. This paper focuses on the research of high-power electronic variable-voltage converter module. The design of variable-voltage circuit based on DSP chip TMS320F2812 is presented. The control strategy of sinusoidal pulse width modulation (SPWM) technology is adopted, and the complexity of the control circuit is reduced by digital method. The stability and security of the control circuit and the flexibility of the inverter are improved, including the software generation method of SPWM wave and the software realization of digital PID algorithm. The hardware design is aimed at the main circuit and control circuit of three-phase rectifier inverter, including three-phase non-controlled rectifier bridge, power factor correction circuit, three-phase full-bridge inverter, filter circuit, output voltage frequency sampling circuit, conditioning circuit. Three-phase bridge drive circuit, auxiliary power supply circuit design and man-machine AC interface design. MATLAB/Simulink software is used to simulate each module of three-phase rectifier inverter circuit and the whole system. The simulation results show that the frequency, amplitude and input power factor are effectively controlled, and the shore power system has good steady-state precision and dynamic performance. The voltage harmonic coefficient reaches the expected value of 3, the input current is continuous, the power factor is 0.9, the output frequency error is less than 0.5, the overshoot of the system is reduced to 16.2%, and the system is stable after 0.05s. It is verified that the system design scheme meets the requirements of the index. It has the advantages of high efficiency, high overload capacity, high stability and flexible switching. It can be used in the future.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U653.95

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