發(fā)布時(shí)間：2018-09-19 16:51

【摘要】：針對(duì)目前環(huán)境污染帶來(lái)的危害以及人類日益重視到節(jié)能減排和環(huán)境保護(hù)重要性的大背景下,使用岸電電源系統(tǒng)代替船用發(fā)電機(jī)能夠有效地抑制靠岸船舶作業(yè)引起的港口環(huán)境污染問(wèn)題。因此,使用岸電電源替代船舶柴油發(fā)電機(jī)動(dòng)力成為現(xiàn)在應(yīng)對(duì)港口環(huán)境污染的重要舉措和熱點(diǎn)話題。本論文所研究實(shí)現(xiàn)的岸電電源是為船舶靠港工作時(shí)提供電能的變換裝置,其功能是實(shí)現(xiàn)將工頻三相380V/50Hz的交流電能變換為供船舶用電器相匹配的電壓和頻率供給船舶用電器工作使用。岸電電源系統(tǒng)設(shè)計(jì)主要包括大功率電力電子變壓變頻模塊設(shè)計(jì)、船舶與岸電快速無(wú)縫切換模塊設(shè)計(jì)兩大部分。本論文重點(diǎn)研究大功率電力電子變壓變頻模塊,提出了基于DSP芯片TMS320F2812的變壓變頻電路設(shè)計(jì)、采用正弦脈寬調(diào)制(SPWM)技術(shù)控制策略,采用數(shù)字化方法減小了控制電路的復(fù)雜性、提高了控制電路穩(wěn)定性和安全性以及逆變器的靈活性,其中包括SPWM波的軟件生成方法、數(shù)字式PID算法的軟件實(shí)現(xiàn)等。硬件設(shè)計(jì)針對(duì)三相整流逆變器主電路和控制電路兩大部分,包括三相不控整流橋、功率因數(shù)校正電路、三相全橋逆變器、濾波電路、輸出電壓頻率采樣電路、調(diào)理電路、三相橋驅(qū)動(dòng)電路、輔助供電電路設(shè)計(jì)以及人機(jī)交流界面設(shè)計(jì)等。使用MATLAB/Simulink軟件對(duì)三相整流逆變電路各個(gè)模塊以及整體系統(tǒng)進(jìn)行了模擬仿真,仿真結(jié)果表明,頻率、幅值和輸入功率因數(shù)都得到有效控制,該岸電系統(tǒng)有良好穩(wěn)態(tài)精度和動(dòng)態(tài)性能。電壓諧波系數(shù)達(dá)到了預(yù)期值3%、輸入電流連續(xù)且功率因數(shù)達(dá)到0.9、輸出頻率誤差小于0.5%、系統(tǒng)超調(diào)量減小到16.2%以及系統(tǒng)在0.05s后處于穩(wěn)定。驗(yàn)證了系統(tǒng)設(shè)計(jì)方案滿足其指標(biāo)要求。該岸電電源具有效率高、過(guò)載能力強(qiáng)、穩(wěn)定性能高且可靈活切換等優(yōu)點(diǎn),在未來(lái)可以供船舶用電系統(tǒng)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.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U653.95

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