本文選題：交流電子負(fù)載 + 電壓型PWM��； 參考：《南京師范大學(xué)》2015年碩士論文

【摘要】：電源裝置在工農(nóng)業(yè)生產(chǎn)和人們的日常生活中有著廣泛的應(yīng)用,電源的損壞將直接造成用電設(shè)備停止工作,進(jìn)而影響到生產(chǎn)、生活。正因?yàn)殡娫丛O(shè)備的重要性,國(guó)內(nèi)外的相關(guān)行業(yè)都相應(yīng)地制訂了各種電源質(zhì)量標(biāo)準(zhǔn)來考核電源產(chǎn)品的性能質(zhì)量,電源裝置在出廠時(shí)都需要進(jìn)行嚴(yán)格的老化實(shí)驗(yàn)和動(dòng)態(tài)、穩(wěn)態(tài)帶載測(cè)試,以保證出廠電源的優(yōu)良品質(zhì)。由于傳統(tǒng)電源測(cè)試方式存在能耗大、靈活性差等諸多缺點(diǎn)已經(jīng)很難滿足測(cè)試要求,為了解決這一問題,本文設(shè)計(jì)了一種交流電子負(fù)載裝置,以滿足各種測(cè)試場(chǎng)合的要求。本文的研究?jī)?nèi)容主要包括以下幾個(gè)方面：分析了單相和三相交流電子負(fù)載的主電路拓?fù)浣Y(jié)構(gòu),對(duì)單相和三相電壓型PWM變換器的開關(guān)工作模式以及數(shù)學(xué)模型分別進(jìn)行了分析。分析了負(fù)載模擬變換器模擬各種形式負(fù)載的原理以及電壓型PWM變換器的電流控制原理,介紹了幾種常用的直接電流控制方式,并選擇滯環(huán)電流跟蹤控制策略來控制負(fù)載模擬變換器的輸入電流；分析了負(fù)載模擬變換器中主電路參數(shù)的設(shè)計(jì),包括推算交流側(cè)輸入電感值和直流母線電容值的取值范圍,研究了主電路中幾項(xiàng)影響全控型器件開關(guān)頻率的因素；最后搭建了基于MATLAB/Simulink平臺(tái)的負(fù)載模擬變換器的仿真模型,通過模擬各種類型的負(fù)載,驗(yàn)證了滯環(huán)電流跟蹤控制在負(fù)載模擬變換器中的可行性和準(zhǔn)確性。最后,提出了兩種并網(wǎng)逆變方案：一是電壓型PWM變換器結(jié)構(gòu)的傳統(tǒng)橋式并網(wǎng)逆變電路,對(duì)該電路采用電壓外環(huán)、電流內(nèi)環(huán)的雙閉環(huán)控制策略,其中內(nèi)環(huán)電流采用滯環(huán)電流跟蹤控制；二是本文提出的新型橋式并網(wǎng)逆變電路,對(duì)該電路采用單周期控制方式來控制其輸出電壓,從而間接控制輸出側(cè)交流電流。在MATLAB/Simulink平臺(tái)上分別建立兩種并網(wǎng)逆變方案的仿真模型,并對(duì)仿真結(jié)果進(jìn)行了分析和比較。
[Abstract]:Power supply devices are widely used in industrial and agricultural production and people's daily life. The damage of power supply will directly cause the electrical equipment to stop working, and then affect the production and life. It is precisely because of the importance of power supply equipment that relevant industries at home and abroad have correspondingly formulated various power quality standards to assess the performance quality of power supply products, and power supply devices need strict aging experiments and dynamics when they leave the factory. Steady state load test to ensure the excellent quality of power supply. In order to solve this problem, a kind of AC electronic load device is designed to meet the requirements of various test occasions because of the disadvantages of high energy consumption and poor flexibility in the traditional power supply test mode. The main contents of this paper are as follows: the main circuit topology of single-phase and three-phase AC electronic load is analyzed, and the switching mode and mathematical model of single-phase and three-phase voltage-source PWM converters are analyzed respectively. This paper analyzes the principle of simulating various kinds of load in load analog converter and the current control principle of voltage source PWM converter, and introduces several common direct current control methods. The hysteresis current tracking control strategy is selected to control the input current of the load analog converter, and the design of the main circuit parameters in the load analog converter is analyzed, including the range of the input inductance of AC side and the value of DC busbar capacitance. Several factors affecting switching frequency of full-control devices in main circuit are studied. Finally, a simulation model of load analog converter based on MATLAB / Simulink platform is built, and various kinds of loads are simulated. The feasibility and accuracy of hysteresis current tracking control in load analog converter are verified. Finally, two grid-connected inverter schemes are proposed: one is the traditional bridge grid-connected inverter circuit with voltage source PWM converter structure, which adopts double closed loop control strategy of voltage outer loop and current inner loop. The internal loop current is controlled by hysteresis current tracking, and the new bridge grid-connected inverter is proposed in this paper. The output voltage of the circuit is controlled by a single period control mode, which indirectly controls the AC current at the output side. The simulation models of two grid-connected inverter schemes are established on MATLAB / Simulink platform, and the simulation results are analyzed and compared.
【學(xué)位授予單位】：南京師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM46

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 劉志剛,和敬涵;基于電流型PWM整流器的電子模擬負(fù)載系統(tǒng)研究[J];電工技術(shù)學(xué)報(bào);2004年06期

2 單任仲;沈沉;陳來軍;劉鋒;黃秀瓊;;全數(shù)字滯環(huán)電流控制可控電流源研究[J];電網(wǎng)技術(shù);2012年12期

3 楊超;龔春英;;基于DSP的能量回饋型交流電子負(fù)載的研究[J];通信電源技術(shù);2008年01期

，

本文編號(hào)：2042962