This paper presents a current control method for a shunt hybrid active power filter （HAPF） using recursive integral PI algorithm. The method improves the performance of the HAPF system by reducing the influence of d...This paper presents a current control method for a shunt hybrid active power filter （HAPF） using recursive integral PI algorithm. The method improves the performance of the HAPF system by reducing the influence of detection accuracy, time delay of instruction current calculation and phase displacement of output filter. Fuzzy logic based set-point weighing algorithm is combined in the control scheme to enhance its robustness and anti-interference ability. The proposed algorithm is easy to implement for engineering applications and easy to compute. Experiment results have verified the validity of the proposed controller. Furthermore, the proposed recursive integral PI algorithm can also be applied in the control of periodic current as in AC drivers.展开更多
Periodic arrays of hybrid-shunted piezoelectric patches are used to control the band-gaps of phononic metamaterial beams. Passive resistive-inductive （RL） shunting circuits can produce a narrow resonant band-gap （R...Periodic arrays of hybrid-shunted piezoelectric patches are used to control the band-gaps of phononic metamaterial beams. Passive resistive-inductive （RL） shunting circuits can produce a narrow resonant band-gap （RG）, and active negative capacitive （NC） shunting circuits can broaden the Bragg band-gaps （BGs）. In this article, active NC shunting circuits and passive resonant RL shunting circuits are connected to the same piezoelectric patches in parallel, which are usually called hybrid shunting circuits, to control the location and the extent of the band-gaps. A super-wide coupled band-gap is generated when the coupling between RG and the BG occurs. The attenuation constant of the infinite periodic structure is predicted by the transfer matrix method, which is compared with the vibration transmittance of a finite periodic structure calculated by the finite element method. Numerical results show that the hybrid-shunting circuits can make the band-gaps wider by appropriately selecting the inductances, negative capacitances, and resistances.展开更多
根据大容量谐波抑制兼无功功率补偿的要求,从达到滤波效果和经济成本最小两个方面考虑,该文提出了一种并联混合型注入式有源电力滤波器(Hybrid Active Power Filter,HAPF)结构,并对该新型有源电力滤波器有源和无源部分的参数设计进行了...根据大容量谐波抑制兼无功功率补偿的要求,从达到滤波效果和经济成本最小两个方面考虑,该文提出了一种并联混合型注入式有源电力滤波器(Hybrid Active Power Filter,HAPF)结构,并对该新型有源电力滤波器有源和无源部分的参数设计进行了研究,形成了一套混合型大容量有源滤波器的参数设计方法。以该方法设计的HAPF在某冶炼厂谐波治理工程中得以应用,体现出较好的滤波效果和优良的性价比,具有良好的工程推广应用前景。由于目前国内有源滤波器的工程应用实例极少,因此该套设计方法对其它HAPF的研究与应用还可起到一定的指导和借鉴作用。展开更多
基金supported by the National Natural Science Foundation of China (No.60774043)
文摘This paper presents a current control method for a shunt hybrid active power filter （HAPF） using recursive integral PI algorithm. The method improves the performance of the HAPF system by reducing the influence of detection accuracy, time delay of instruction current calculation and phase displacement of output filter. Fuzzy logic based set-point weighing algorithm is combined in the control scheme to enhance its robustness and anti-interference ability. The proposed algorithm is easy to implement for engineering applications and easy to compute. Experiment results have verified the validity of the proposed controller. Furthermore, the proposed recursive integral PI algorithm can also be applied in the control of periodic current as in AC drivers.
基金supported by the National Natural Science Foundation of China(Grant Nos.51275519 and 51175501)
文摘Periodic arrays of hybrid-shunted piezoelectric patches are used to control the band-gaps of phononic metamaterial beams. Passive resistive-inductive （RL） shunting circuits can produce a narrow resonant band-gap （RG）, and active negative capacitive （NC） shunting circuits can broaden the Bragg band-gaps （BGs）. In this article, active NC shunting circuits and passive resonant RL shunting circuits are connected to the same piezoelectric patches in parallel, which are usually called hybrid shunting circuits, to control the location and the extent of the band-gaps. A super-wide coupled band-gap is generated when the coupling between RG and the BG occurs. The attenuation constant of the infinite periodic structure is predicted by the transfer matrix method, which is compared with the vibration transmittance of a finite periodic structure calculated by the finite element method. Numerical results show that the hybrid-shunting circuits can make the band-gaps wider by appropriately selecting the inductances, negative capacitances, and resistances.
文摘根据大容量谐波抑制兼无功功率补偿的要求,从达到滤波效果和经济成本最小两个方面考虑,该文提出了一种并联混合型注入式有源电力滤波器(Hybrid Active Power Filter,HAPF)结构,并对该新型有源电力滤波器有源和无源部分的参数设计进行了研究,形成了一套混合型大容量有源滤波器的参数设计方法。以该方法设计的HAPF在某冶炼厂谐波治理工程中得以应用,体现出较好的滤波效果和优良的性价比,具有良好的工程推广应用前景。由于目前国内有源滤波器的工程应用实例极少,因此该套设计方法对其它HAPF的研究与应用还可起到一定的指导和借鉴作用。
