發(fā)布時間：2018-08-18 08:19

【摘要】：近年來,由于電力電子技術(shù)的飛速發(fā)展,由此所帶來的諧波問題越來越受到人們的重視和關(guān)注,因此,諧波的治理成為人們面臨的一個重大問題。無源電力濾波器能同時補償無功與諧波,且結(jié)構(gòu)簡單,但是它只能補償固定次數(shù)的諧波,且易與電網(wǎng)發(fā)生諧振。有源電力濾波器可以動態(tài)補償,濾波性能好、響應(yīng)速度快,且可以同時濾除多次諧波,但缺點是造價高、容量小,只能應(yīng)用在低壓系統(tǒng)。本文所研究的有源調(diào)諧型混合電力濾波器結(jié)合了二者的優(yōu)點,既降低了有源電力濾波器的容量,又可以實現(xiàn)多調(diào)諧,具有廣泛的應(yīng)用前景。為了使得有源調(diào)諧型混合電力濾波器(Active Tuned Hybrid Power Filter——ATHPF)能正常工作,達到良好的諧波補償效果,有源電力濾波器(APF)的直流側(cè)電壓必須達到一定的電壓值,而且保持恒定。本文采用他勵電源為ATHPF逆變器的直流側(cè)電容提供電壓,他勵方式不但可以穩(wěn)定直流電壓,同時還有抑制APF在動態(tài)諧波補償中直流電壓波動的作用。本文分析了他勵電源的穩(wěn)壓及動態(tài)調(diào)節(jié)機理,并通過理論分析給出了他勵式ATHPF中他勵電源直流側(cè)電壓、容量選擇及主電路參數(shù)的設(shè)計方法,為他勵電源的設(shè)計提供了基本的參考依據(jù);同時,他勵電源采用電壓電流的雙閉環(huán)控制的控制策略,保證了他勵電源為APF直流側(cè)電容提供穩(wěn)定的電壓,從而使得他勵式有源調(diào)諧型混合電力濾波器具有良好的濾波效果。搭建了有源調(diào)諧型混合電力濾波器的Simulink仿真模型與RT-LAB實時仿真模型,對系統(tǒng)在不同工況下的Simulink仿真與RT-LAB實時仿真結(jié)果做了分析。Simulink仿真和RT-LAB實時仿真結(jié)果驗證了所給出的他勵穩(wěn)壓電源的直流側(cè)電壓、容量選擇方法、主電路參數(shù)設(shè)計及控制策略的正確可行性。
[Abstract]:In recent years, due to the rapid development of power electronics technology, the harmonic problem has been paid more and more attention. Therefore, the management of harmonics has become a major problem. The passive power filter can compensate reactive power and harmonic simultaneously, and its structure is simple, but it can only compensate the harmonics of fixed number, and it can easily resonate with the power network. Active power filter (APF) can be compensated dynamically, has good filtering performance, fast response speed, and can filter multiple harmonics simultaneously. However, it can only be used in low voltage system because of its high cost and small capacity. The active tunable hybrid power filter studied in this paper not only reduces the capacity of the active power filter, but also can realize multiple tuning, so it has a wide application prospect. In order to make the active tuned hybrid power filter (Active Tuned Hybrid Power Filter--ATHPF) work normally and achieve a good harmonic compensation effect, the DC side voltage of the active power filter (APF) must reach a certain voltage value and keep constant. In this paper, a shunt source is used to supply the voltage for the DC side capacitance of ATHPF inverter, which can not only stabilize the DC voltage, but also restrain the DC voltage fluctuation of APF in the dynamic harmonic compensation. In this paper, the principle of voltage stabilization and dynamic regulation is analyzed, and the design method of DC side voltage, capacity selection and main circuit parameters of ATHPF is given through theoretical analysis. At the same time, the control strategy of double closed loop control of voltage and current is used to ensure the stable voltage of APF DC side capacitor. Therefore, it makes the active tunable hybrid power filter with other excitation have good filtering effect. The Simulink simulation model and RT-LAB real time simulation model of active tuned hybrid power filter are built. The results of Simulink simulation and RT-LAB real-time simulation of the system under different operating conditions are analyzed. Simulink simulation and RT-LAB real-time simulation results verify the DC side voltage and capacity selection method. The design of main circuit parameters and the correct feasibility of control strategy.
【學(xué)位授予單位】：西安理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM761;TM46

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