【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(gè)重大問題。無源電力濾波器能同時(shí)補(bǔ)償無功與諧波,且結(jié)構(gòu)簡單,但是它只能補(bǔ)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(dòng)態(tài)補(bǔ)償,濾波性能好、響應(yīng)速度快,且可以同時(shí)濾除多次諧波,但缺點(diǎn)是造價(jià)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(diǎn),既降低了有源電力濾波器的容量,又可以實(shí)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(dá)到良好的諧波補(bǔ)償效果,有源電力濾波器(APF)的直流側(cè)電壓必須達(dá)到一定的電壓值,而且保持恒定。本文采用他勵(lì)電源為ATHPF逆變器的直流側(cè)電容提供電壓,他勵(lì)方式不但可以穩(wěn)定直流電壓,同時(shí)還有抑制APF在動(dòng)態(tài)諧波補(bǔ)償中直流電壓波動(dòng)的作用。本文分析了他勵(lì)電源的穩(wěn)壓及動(dòng)態(tài)調(diào)節(jié)機(jī)理,并通過理論分析給出了他勵(lì)式ATHPF中他勵(lì)電源直流側(cè)電壓、容量選擇及主電路參數(shù)的設(shè)計(jì)方法,為他勵(lì)電源的設(shè)計(jì)提供了基本的參考依據(jù);同時(shí),他勵(lì)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(lì)電源為APF直流側(cè)電容提供穩(wěn)定的電壓,從而使得他勵(lì)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(shí)時(shí)仿真模型,對(duì)系統(tǒng)在不同工況下的Simulink仿真與RT-LAB實(shí)時(shí)仿真結(jié)果做了分析。Simulink仿真和RT-LAB實(shí)時(shí)仿真結(jié)果驗(yàn)證了所給出的他勵(lì)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(jì)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(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM761;TM46

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