本文選題：PWM整流器 + 非線性控制　； 參考：《中國礦業(yè)大學(xué)》2014年碩士論文

【摘要】：電壓型PWM整流器能夠真正實現(xiàn)“綠色電能變換”，隨著PWM整流器的應(yīng)用日益廣泛，相關(guān)學(xué)者相繼提出了多種控制效果優(yōu)良的非線性控制策略，而大多數(shù)的非線性控制方法都有各自的優(yōu)缺點。本文以三相電壓型PWM整流器為研究對象，選擇兩種非線性控制策略分別進(jìn)行研究分析。 無源控制算法簡單，易于實現(xiàn)，，具有一定的魯棒性，在機器人的控制方面應(yīng)用廣泛。本文根據(jù)三相電壓型PWM整流器在dq坐標(biāo)系下的EL數(shù)學(xué)模型，由系統(tǒng)的期望平衡點出發(fā)設(shè)計出系統(tǒng)的誤差能量函數(shù)，采用阻尼注入的方法設(shè)計系統(tǒng)的無源控制器，使得系統(tǒng)在期望點能夠穩(wěn)定，同時還解決了系統(tǒng)的耦合問題，可以實現(xiàn)了電源的“綠色變換”，并且可以通過對注入阻尼的調(diào)節(jié)來改善系統(tǒng)的性能。 反推控制是用一種遞歸的方式從控制結(jié)果出發(fā)反向得出系統(tǒng)的控制律，能夠達(dá)到系統(tǒng)的全局穩(wěn)定，控制性能比較優(yōu)異，特別是在機器人以及飛行器的控制方面具有顯著的控制優(yōu)點。本文根據(jù)三相電壓型PWM整流器的數(shù)學(xué)模型，將整個系統(tǒng)看成多個子系統(tǒng)，從直流側(cè)輸出電壓的期望值出發(fā)，構(gòu)造系統(tǒng)的第一個子系統(tǒng)和Lyapunov函數(shù)，為使子系統(tǒng)達(dá)到穩(wěn)定，設(shè)計出虛擬控制函數(shù)，如此類推，對每一個子系統(tǒng)加以設(shè)計，直到得出系統(tǒng)的實際控制。 最后通過Matlab的仿真結(jié)果對三相電壓型PWM整流器的無源控制算法和反推控制算法分別進(jìn)行了靜動態(tài)性能的分析，并且通過仿真波形分析了兩種控制策略中控制參數(shù)對系統(tǒng)性能的影響，設(shè)計出更好的參數(shù)組合，使系統(tǒng)的各項指標(biāo)達(dá)到最佳，最后分別從控制器的設(shè)計過程、控制參數(shù)以及系統(tǒng)參數(shù)擾動對性能的影響三個方面對兩種控制進(jìn)行了對比分析。
[Abstract]:Voltage source PWM rectifier can truly realize "green power conversion". With the increasing application of PWM rectifier, many nonlinear control strategies with good control effect have been put forward by related scholars. Most nonlinear control methods have their own advantages and disadvantages. In this paper, three phase voltage source PWM rectifier is chosen as the research object, and two nonlinear control strategies are selected to study and analyze respectively. The passive control algorithm is simple, easy to implement, robust and widely used in robot control. In this paper, according to the El mathematical model of three-phase voltage source PWM rectifier in dq coordinate system, the error energy function of the system is designed from the expected equilibrium point of the system, and the passive controller of the system is designed by the method of damping injection. The system is stable at the desired point, and the coupling problem of the system is solved. The "green transformation" of the power supply can be realized, and the performance of the system can be improved by adjusting the injection damping. The backstepping control is a recursive way to get the control law of the system from the control result. It can achieve the global stability of the system, and the control performance is excellent. Especially in the control of robots and aircraft has significant control advantages. According to the mathematical model of three-phase voltage-source PWM rectifier, the whole system is regarded as several subsystems. The first subsystem and Lyapunov function of the system are constructed from the expected value of DC output voltage, in order to make the subsystem stable. The virtual control function is designed, and so on, every subsystem is designed until the actual control of the system is obtained. Finally, the static and dynamic performance of the passive control algorithm and the backstepping control algorithm of the three-phase voltage-source PWM rectifier are analyzed by the simulation results of Matlab. The influence of the control parameters on the performance of the system is analyzed through the simulation waveform, and a better combination of parameters is designed to achieve the best performance of the system. Finally, the design process of the controller is given. The control parameters and the effects of system parameters disturbance on the performance of the two kinds of control are compared and analyzed.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM461

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