本文選題：軍用移動電站 + 永磁同步發(fā)電機�。� 參考：《西安科技大學》2017年碩士論文

【摘要】：軍用移動電站(Military Mobile Power Station,簡稱MMPS)是野戰(zhàn)條件下軍隊武器裝備和后勤保障的主要電能來源,是打贏現(xiàn)代化戰(zhàn)爭的重要保證。其主要組成包括:發(fā)電裝置部分、功率主電路部分、控制系統(tǒng)部分、運載部分。目前,大量裝備部隊的MMPS發(fā)電裝置是柴油發(fā)電機組,由于發(fā)動機供油系統(tǒng)存在不可避免的擾動問題,其輸出電壓幅值和頻率不穩(wěn)難以保證武器系統(tǒng)和后勤保障對電能質量的要求。因此,需要為柴油發(fā)電機組中的永磁同步發(fā)電機(Permanent Magnet Synchronous Generator,簡稱PMSG)設計配套的逆變系統(tǒng),完成電能變換,以達到武器系統(tǒng)和后勤保障對電能質量的嚴格要求。同時,為使MMPS供電系統(tǒng)的性能、容量、可靠性、安全性和擴展性滿足各種現(xiàn)代武器裝備和后勤保障的要求,就需要兩臺或以上電站組網的方式提供電能,組成任意所需容量的冗余供電系統(tǒng),即構建“戰(zhàn)術微電網”,而利用MMPS組建“戰(zhàn)術微電網”的核心技術是逆變器并聯(lián)控制技術。因此,本文主要圍繞PMSG用逆變器設計和逆變器并聯(lián)控制技術兩大問題展開分析與研究。首先,為使PMSG輸出的三相交流電壓和頻率能夠恒定且滿足用電要求,且給單相負載提供電能和提高帶不平衡負載的能力,本文為PMSG用逆變器系統(tǒng)設計了三相橋式不控整流電路-雙Boost升壓電路-三相橋式逆變電路的AC-DC-DC-AC變換器拓撲結構,并推導了其關鍵組件的數學模型。為了克服負載突變時母線電壓波動的情況,提出了基于逆變器輸出電感電流的擾動補償復合控制策略,提高系統(tǒng)響應速度,改善Boost升壓電路輸出電壓波形;且對三相逆變器完成了電壓電流解耦雙閉環(huán)控制策略的設計。在理論研究的基礎之上,利用MATLAB/Simulink軟件進行了仿真,仿真結果驗證了 PMSG用逆變器系統(tǒng)控制策略的正確性。其次,在傳統(tǒng)下垂控制方法理論分析的基礎上,為實現(xiàn)逆變器并聯(lián)系統(tǒng)功率均分、環(huán)流抑制和提高系統(tǒng)的動態(tài)響應,提出了一種改進的逆變器并聯(lián)下垂控制方法。其改進內容是:針對傳統(tǒng)下垂法反饋信號不能準確測到等效線路阻抗后的公共節(jié)點電壓,基于逆變器輸出端電壓推導出了改進功率計算公式,提高了 PMSG用逆變器并聯(lián)系統(tǒng)均流控制器的控制精度;針對PMSG用逆變器并聯(lián)系統(tǒng)中不同電壓等級連接線路阻抗不同引起的無功環(huán)流,設計了線路壓降補償環(huán)節(jié),改善了逆變器并聯(lián)系統(tǒng)的均流性能;針對利用低通濾波器計算功率時對并聯(lián)系統(tǒng)動態(tài)響應的影響,在傳統(tǒng)下垂法的基礎上增加積分環(huán)節(jié)和微分環(huán)節(jié),加快了系統(tǒng)的動態(tài)響應,消除了靜態(tài)誤差。仿真結果表明,所提改進下垂控制法可以很好地實現(xiàn)逆變器的功率均分和環(huán)流抑制,提高了系統(tǒng)響應速度。最后,本文以TI公司型號為TMS320F28335的DSP作為核心控制芯片,CREE公司型號為C2M0280120D的SiC MOSFET作為功率器件,搭建了 PMSG用逆變器系統(tǒng)硬件平臺,在此平臺上進行了試驗驗證。試驗結果表明,本文設計的PMSG用逆變器系統(tǒng)滿足設計要求,達到了預期目的,進一步驗證了設計的合理性和可行性。
[Abstract]:Military Mobile Power Station (abbreviated as MMPS) is the main power source of military equipment and logistic support in the field of field warfare. It is an important guarantee to win the modern war. Its main components include the power generation unit, the power main circuit part, the control system part, the carrier part. At present, a large number of troops are equipped with MMP. The S power generation unit is a diesel generating set. Because of the inevitable disturbance in the engine oil supply system, its output voltage amplitude and frequency instability are difficult to ensure the requirements of the weapon system and the logistic support to the quality of the electric energy. Therefore, the permanent magnet synchronous generator (Permanent Magnet Synchronous Generator) in the diesel generator set is required. For short, PMSG) designed a complete set of inverter systems to complete the electrical energy conversion to achieve strict requirements for the quality of the power system and logistics support. At the same time, for the performance, capacity, reliability, safety and scalability of the MMPS power supply system to meet the requirements of various modern weapons and logistic support, two or more power stations are needed. The type of redundant power supply system of arbitrary required capacity is provided, that is to construct the "tactical micro grid", and the core technology of using MMPS to form "tactical micro grid" is the inverter parallel control technology. Therefore, this paper focuses on the analysis and research of the two problems of PMSG inverter design and inverter parallel control technology. First, In order to make the three-phase AC voltage and frequency of the PMSG output constant and satisfy the demand for electricity, and provide the power of the single phase load and the ability to increase the unbalanced load, this paper designs a AC-DC-DC-AC converter topology for the three-phase bridge type uncontrolled rectifier circuit, the double Boost boost circuit and the three-phase bridge inverter circuit for the inverter system. In order to overcome the voltage fluctuation of the bus, the disturbance compensation complex control strategy based on the output inductance current of the inverter is proposed to improve the response speed of the system and improve the output voltage waveform of the Boost boost circuit, and the three-phase inverter has completed the dual closed loop voltage and current decoupling closed loop. The design of control strategy. On the basis of the theoretical research, the simulation is carried out using MATLAB/Simulink software. The simulation results verify the correctness of the control strategy of PMSG inverter system. Secondly, on the basis of the theoretical analysis of the traditional droop control method, the power equalization of the inverter parallel system, the circulation suppression and the improvement of the system are achieved. In dynamic response, an improved inverter parallel droop control method is proposed. Its improvement is that the feedback signal of the traditional droop method can not accurately measure the common node voltage after the equivalent circuit impedance. Based on the output voltage of the inverter, the improved power calculation formula is derived, and the parallel flow control of the PMSG inverter parallel system is improved. The control precision of the system is designed. In view of the reactive current caused by different voltage levels in the parallel inverter parallel system of PMSG, the circuit pressure drop compensation link is designed to improve the current sharing performance of the inverter parallel system, and the influence on the dynamic response of the parallel system when the power is calculated by using the low pass filter is made in the traditional droop. On the basis of the method, the integral link and the differential link are added, the dynamic response of the system is accelerated and the static error is eliminated. The simulation results show that the proposed improved droop control method can well realize the power sharing and circulation suppression of the inverter and improve the response speed of the system. Finally, this paper takes the DSP of the TI company as TMS320F28335 as the core. The core control chip, the CREE company model of C2M0280120D SiC MOSFET as the power device, set up the hardware platform of the PMSG inverter system, and tested the test on this platform. The test results show that the PMSG inverter system designed in this paper meets the design requirements and achieves the expected purpose, further validates the rationality and feasibility of the design. Sex.

【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM313;TM464

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本文編號：1874892