基于DSP的并聯(lián)型三電平有源電力濾波器的研究
發(fā)布時間：2019-02-13 10:28
【摘要】：隨著電力電子裝置的廣泛應(yīng)用,電力系統(tǒng)的諧波問題日益嚴(yán)重,諧波成為影響電能質(zhì)量的主要因素。有源電力濾波器被公認(rèn)為是治理電網(wǎng)諧波及無功污染、改善電能質(zhì)量最有效的手段,具有響應(yīng)速度快、補(bǔ)償精度高、體積小、智能化程度高等特點,在國外已經(jīng)投入實際應(yīng)用。在國內(nèi)對有源電力濾波器的研究還處在開始階段,本課題是與山東比亞科技有限公司合作,研究設(shè)計補(bǔ)償能力為50A的低壓并聯(lián)型三電平有源電力濾波器。 本文首先介紹了并聯(lián)型有源電力濾波器的基本原理,選擇的二極管箝位型逆變電路的主電路拓?fù)浣Y(jié)構(gòu),具有降低功率器件耐壓值,提高等效開關(guān)頻率,改善輸出波形質(zhì)量等優(yōu)點。多電平技術(shù)成為有源電力濾波器的應(yīng)用趨勢。 諧波電流的檢測方法和電流跟蹤控制方法是有源電力濾波器具有良好補(bǔ)償性能的關(guān)鍵。本文介紹了采用的兩種檢測算法：基于滑窗迭代離散傅里葉變換的檢測算法和基于瞬時無功理論的d-q檢測算法。兩種方法各有優(yōu)缺點,適應(yīng)于不同的應(yīng)用場合和補(bǔ)償要求。本次設(shè)計通過仿真分析多種控制方法,確定選擇的電流跟蹤控制方法是無差拍電流控制和空間矢量PWM調(diào)制相結(jié)合的控制算法,本文重點介紹了基于周期預(yù)測的無差拍控制算法和基于60°坐標(biāo)系的空間矢量PWM算法的基本原理。 主電路及其參數(shù)的設(shè)計是有源電力濾波器實際產(chǎn)品設(shè)計的關(guān)鍵之一,能直接影響有源電力濾波器的實際補(bǔ)償效果。本文對三電平并聯(lián)型有源電力濾波器的主電路進(jìn)行深入研究,主要包括逆變電路、緩沖電路、高頻濾波電路、充電電路以及EMI濾波電路的電路設(shè)計。主電路主要參數(shù)的計算沒有通用的方法,本文通過建立三電平有源電力濾波器的主電路數(shù)學(xué)模型,采用理論分析和仿真驗證相結(jié)合的方法確定直流母線電壓、直流母線儲能電容和交流側(cè)輸出電感的參數(shù)。 控制系統(tǒng)是有源電力濾波器的核心,直接影響其補(bǔ)償性能和功能的實現(xiàn)。本文采用了基于數(shù)字信號處理器TMS320F28335的全數(shù)字化控制系統(tǒng)的實現(xiàn)方案,并對控制系統(tǒng)的硬件電路和軟件系統(tǒng)設(shè)計進(jìn)行了研究�？刂葡到y(tǒng)硬件電路主要包括電源電路、信號檢測與調(diào)理電路、硬件保護(hù)電路、IGBT驅(qū)動電路以及RS485通訊電路等電路；控制系統(tǒng)的軟件設(shè)計包括主程序和中斷程序的設(shè)計。 本文結(jié)合選擇的檢測方算法和控制策略,在MATLAB/Simulink環(huán)境下建立了系統(tǒng)仿真模型,仿真有源電力濾波器的啟動和運(yùn)行過程,并通過仿真驗證主電路參數(shù)對補(bǔ)償效果的影響,確定相關(guān)參數(shù)。主電路仿真模型和檢測與控制算法仿真模型的結(jié)合實現(xiàn)了并聯(lián)型有源電力濾波器的系統(tǒng)整體仿真,為進(jìn)一步的系統(tǒng)設(shè)計提供分析依據(jù)。
[Abstract]:With the wide application of power electronic devices, the harmonic problem of power system becomes more and more serious, and harmonic becomes the main factor that affects the power quality. Active power filter (APF) is recognized as the most effective means to control harmonic and reactive power pollution and improve power quality. It has the characteristics of fast response speed, high compensation accuracy, small size and high intelligence. It has been put into practical application abroad. The research of active power filter in China is still in the beginning stage. This project is to design a low-voltage shunt three-level active power filter with compensation capacity of 50A in cooperation with Shandong Biya Science and Technology Co., Ltd. In this paper, the basic principle of shunt active power filter is introduced, and the main circuit topology of diode clamped inverter circuit is selected, which can reduce the voltage value of power device and increase the equivalent switching frequency. Improve the quality of output waveform and other advantages. Multilevel technology has become the application trend of active power filter (APF). The harmonic current detection method and current tracking control method are the key to the good compensation performance of active power filter (APF). This paper introduces two detection algorithms: one based on sliding window iterative discrete Fourier transform and the other based on instantaneous reactive power theory. The two methods have their own advantages and disadvantages and are suitable for different applications and compensation requirements. Through simulation and analysis of various control methods, this design determines that the selected current tracking control method is a combined control algorithm of deadbeat current control and space vector PWM modulation. This paper focuses on the basic principles of the beat free control algorithm based on periodic prediction and the space vector PWM algorithm based on 60 擄coordinate system. The design of the main circuit and its parameters is one of the key points in the practical product design of the active power filter, which can directly affect the actual compensation effect of the active power filter. In this paper, the main circuit of three-level shunt active power filter is studied, including inverter circuit, buffer circuit, high frequency filter circuit, charging circuit and EMI filter circuit. There is no universal method to calculate the main parameters of the main circuit. In this paper, the main circuit mathematical model of the three-level active power filter is established, and the DC bus voltage is determined by the combination of theoretical analysis and simulation verification. DC bus energy storage capacitance and AC side output inductance parameters. The control system is the core of active power filter, which directly affects its compensation performance and function. In this paper, the realization scheme of full digital control system based on digital signal processor (TMS320F28335) is adopted, and the hardware circuit and software design of the control system are studied. The hardware circuit of the control system mainly includes power supply circuit, signal detection and conditioning circuit, hardware protection circuit, IGBT drive circuit and RS485 communication circuit, etc. The software design of the control system includes the design of the main program and the interrupt program. In this paper, combined with the algorithm and control strategy of the selected detector, the system simulation model is established in MATLAB/Simulink environment to simulate the start-up and operation of APF, and the effect of main circuit parameters on the compensation effect is verified by simulation. Determine the relevant parameters. Combining the main circuit simulation model and the detection and control algorithm simulation model, the whole system simulation of shunt active power filter is realized, which provides the analysis basis for further system design.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM761;TN713.8
本文編號：2421460
[Abstract]:With the wide application of power electronic devices, the harmonic problem of power system becomes more and more serious, and harmonic becomes the main factor that affects the power quality. Active power filter (APF) is recognized as the most effective means to control harmonic and reactive power pollution and improve power quality. It has the characteristics of fast response speed, high compensation accuracy, small size and high intelligence. It has been put into practical application abroad. The research of active power filter in China is still in the beginning stage. This project is to design a low-voltage shunt three-level active power filter with compensation capacity of 50A in cooperation with Shandong Biya Science and Technology Co., Ltd. In this paper, the basic principle of shunt active power filter is introduced, and the main circuit topology of diode clamped inverter circuit is selected, which can reduce the voltage value of power device and increase the equivalent switching frequency. Improve the quality of output waveform and other advantages. Multilevel technology has become the application trend of active power filter (APF). The harmonic current detection method and current tracking control method are the key to the good compensation performance of active power filter (APF). This paper introduces two detection algorithms: one based on sliding window iterative discrete Fourier transform and the other based on instantaneous reactive power theory. The two methods have their own advantages and disadvantages and are suitable for different applications and compensation requirements. Through simulation and analysis of various control methods, this design determines that the selected current tracking control method is a combined control algorithm of deadbeat current control and space vector PWM modulation. This paper focuses on the basic principles of the beat free control algorithm based on periodic prediction and the space vector PWM algorithm based on 60 擄coordinate system. The design of the main circuit and its parameters is one of the key points in the practical product design of the active power filter, which can directly affect the actual compensation effect of the active power filter. In this paper, the main circuit of three-level shunt active power filter is studied, including inverter circuit, buffer circuit, high frequency filter circuit, charging circuit and EMI filter circuit. There is no universal method to calculate the main parameters of the main circuit. In this paper, the main circuit mathematical model of the three-level active power filter is established, and the DC bus voltage is determined by the combination of theoretical analysis and simulation verification. DC bus energy storage capacitance and AC side output inductance parameters. The control system is the core of active power filter, which directly affects its compensation performance and function. In this paper, the realization scheme of full digital control system based on digital signal processor (TMS320F28335) is adopted, and the hardware circuit and software design of the control system are studied. The hardware circuit of the control system mainly includes power supply circuit, signal detection and conditioning circuit, hardware protection circuit, IGBT drive circuit and RS485 communication circuit, etc. The software design of the control system includes the design of the main program and the interrupt program. In this paper, combined with the algorithm and control strategy of the selected detector, the system simulation model is established in MATLAB/Simulink environment to simulate the start-up and operation of APF, and the effect of main circuit parameters on the compensation effect is verified by simulation. Determine the relevant parameters. Combining the main circuit simulation model and the detection and control algorithm simulation model, the whole system simulation of shunt active power filter is realized, which provides the analysis basis for further system design.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM761;TN713.8
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