本文關(guān)鍵詞：基于虛擬同步電機(jī)控制的微電網(wǎng)逆變器研究　出處：《燕山大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 微電網(wǎng) 逆變器控制 虛擬同步電機(jī) 虛擬調(diào)速器 虛擬勵(lì)磁控制器 虛擬同步電機(jī)算法

【摘要】：隨著傳統(tǒng)大電網(wǎng)供電系統(tǒng)弊端的突顯，分布式發(fā)電系統(tǒng)已經(jīng)成為引領(lǐng)電力系統(tǒng)發(fā)展的新方向。微電網(wǎng)控制技術(shù)可以將分布式發(fā)電系統(tǒng)以微電網(wǎng)形式運(yùn)行，不僅充分發(fā)揮了分布式發(fā)電的優(yōu)勢，而且有效避免了其直接入網(wǎng)帶來的負(fù)面影響。 首先，本文通過對(duì)微電網(wǎng)技術(shù)研究現(xiàn)狀分析總結(jié)，得出微電網(wǎng)逆變器控制為目前微電網(wǎng)發(fā)展的關(guān)鍵問題所在。然后，通過對(duì)比分析傳統(tǒng)的微電網(wǎng)逆變器控制方法，指出其控制方法存在的缺陷，在此基礎(chǔ)上結(jié)合微電網(wǎng)的運(yùn)行特性與技術(shù)要求，重點(diǎn)闡述一種新興的控制策略，即基于虛擬同步電機(jī)控制。虛擬同步電機(jī)控制通過逆變器對(duì)同步電機(jī)輸出特性的模擬，可以有效實(shí)現(xiàn)系統(tǒng)功率均分問題，并通過對(duì)同步電機(jī)轉(zhuǎn)動(dòng)慣量的模擬，有效改善傳統(tǒng)控制方法中頻率的穩(wěn)定性。本文對(duì)該控制策略的理論依據(jù)進(jìn)行詳細(xì)的分析論證，并重點(diǎn)設(shè)計(jì)了虛擬調(diào)速器、虛擬勵(lì)磁控制器和虛擬同步電機(jī)算法。通過MATLAB/Simulink軟件對(duì)該控制策略進(jìn)行驗(yàn)證，仿真結(jié)果表明，采用虛擬同步電機(jī)控制的逆變器能夠很好的模擬同步電機(jī)的運(yùn)行特性，且具有良好的穩(wěn)態(tài)及動(dòng)態(tài)響應(yīng)，滿足微電網(wǎng)的運(yùn)行要求。針對(duì)微電網(wǎng)逆變器并聯(lián)組網(wǎng)的問題，，本文將虛擬同步電機(jī)控制策略應(yīng)用于并聯(lián)組網(wǎng)控制，仿真驗(yàn)證并聯(lián)運(yùn)行的微電網(wǎng)逆變器能夠滿足系統(tǒng)均衡負(fù)載要求，且穩(wěn)定可靠運(yùn)行。 最后，搭建了功率等級(jí)為3kW的三相逆變器平臺(tái)，選用TMS320F2812芯片作為該系統(tǒng)的主控制芯片，在CCStudio v3.3環(huán)境下完成了控制程序的編寫，在所搭建的實(shí)驗(yàn)平臺(tái)上完成了系統(tǒng)開環(huán)以及閉環(huán)的實(shí)驗(yàn)，驗(yàn)證了虛擬同步電機(jī)控制的有效性和可行性。
[Abstract]:With the disadvantages of traditional power supply system in large power grid, distributed generation system has become a new direction leading the development of power system. Microgrid control technology can operate distributed generation system in the form of microgrid. It not only gives full play to the advantages of distributed power generation, but also effectively avoids the negative impact brought by its direct access to the network. Firstly, by analyzing and summarizing the research status of microgrid technology, this paper draws the conclusion that the control of micro-grid inverter is the key problem in the development of micro-grid. By comparing and analyzing the traditional control methods of microgrid inverter, the defects of the control methods are pointed out. On the basis of this, a new control strategy is expounded based on the operation characteristics and technical requirements of microgrid. That is, based on the virtual synchronous motor control. Virtual synchronous motor control through the inverter to the synchronous motor output characteristics of simulation, can effectively achieve the system power distribution problem, and through the synchronous motor moment of inertia simulation. In this paper, the theoretical basis of the control strategy is analyzed and demonstrated in detail, and the virtual governor is designed. Virtual excitation controller and virtual synchronous motor algorithm. The control strategy is verified by MATLAB/Simulink software, and the simulation results show that. The inverter controlled by virtual synchronous motor can well simulate the operation characteristics of synchronous motor and has good steady and dynamic response. To meet the operational requirements of microgrid. Aiming at the problem of parallel networking of microgrid inverter, this paper applies the control strategy of virtual synchronous motor to parallel networking control. Simulation results show that the microgrid inverter can meet the requirements of load balancing and can run stably and reliably. Finally, a three-phase inverter platform with a power grade of 3kW is built, and the TMS320F2812 chip is selected as the main control chip of the system. In the environment of CCStudio v3.3, the control program is written, and the open loop and closed loop experiments are completed on the experimental platform. The validity and feasibility of virtual synchronous motor control are verified.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM464;TM341

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