Auteur Poh Chiang Loh
Documents disponibles écrits par cet auteur (10)
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Li, Yun Wei, Auteur ; Vilathgamuwa, D. Mahinda ; Blaabjerg, Frede, Auteur ; Poh Chiang Loh, Auteur |The performance of a dynamic voltage restorer (DVR) is determined solely by its controller. The design of high performance control algorithms for DVR control with improved robustness and desirable steady-state and transient characteristics is th[...]
Article : texte imprimé
Gajanayake, Chandana Jayampathi, Auteur ; Vilathgamuwa, D. Mahinda, Auteur ; Poh Chiang Loh, Auteur |This paper presents the modeling and design of a closed-loop controller for a $Z$-source inverter. The $Z$-source inverter is a recently proposed single-stage power converter, and it is capable of operating in both buck and boost modes. Hence,[...]
Article : texte imprimé
Gao, Feng, Auteur ; Poh Chiang Loh, Auteur ; Blaabjerg, Frede, Auteur |This paper presents new five-level current-source inverters (CSIs) with voltage/current buck-boost capability, unlike existing five-level CSIs where only voltage-boost operation is supported. The proposed inverters attain self-inductive-current-[...]
Article : texte imprimé
Vilathgamuwa, D. M., Auteur ; Gajanayake, C.J., Auteur ; Poh Chiang Loh, Auteur |This paper presents a modulation and controller design method for paralleled Z-source inverter systems applicable for alternative energy sources like solar cells, fuel cells, or variable-speed wind turbines with front-end diode rectifiers. A mod[...]
Article : texte imprimé
Vilathgamuwa, D. Mahinda, Auteur ; Poh Chiang Loh, Auteur ; Li, Yunwei |Microgrids are systems with clusters of microgenerators, which are installed for distributed power generation. When interfaced to the utility grid, microgrids are exposed to common utility power-quality disturbances. In particular, during utilit[...]
Article : texte imprimé
Li, Yun Wei, Auteur ; Blaabjerg, Frede ; Vilathgamuwa, D. Mahinda, Auteur ; Poh Chiang Loh, Auteur |In this paper a robot control scheme with an outer H infinity voltage control loop and an inner current control loop is designed and implemented on a medium-voltage (MV)-level dynamic voltage restorer (DVR) system. THrough a simple selection of [...]
Article : texte imprimé
Poh Chiang Loh, Auteur ; Gao, Feng ; Lim, Sok Wei, Auteur ; Blaabjerg, Frede, Auteur |Three-level Z-source inverters are recent single-stage topological solutions proposed for buck-boost energy conversion with all favorable advantages of three-level switching retained. Despite their effectiveness in achieving voltage buck-boost c[...]
Article : texte imprimé
Poh Chiang Loh, Auteur ; Vilathgamuwa, D. Mahinda, Auteur ; Gajanayake, Chandana Jayampathi, Auteur |The newly proposed Z-Source inverter has been proven in the literature to exhibit both steady-state voltage buck and boost capabilities using a unique LC impedance network coupled between the power source and converter circuit. This paper now p[...]
Article : texte imprimé
Poh Chiang Loh, Auteur ; Vilathgamuwa, D. Mahinda, Auteur ; Gajanayake, Chandana Jayampathi, Auteur |Traditionally, current source (CS) inverters have been adopted for use in medium and high power industry applications. These inverters, however, support only current-buck dc-ac power conversion and need a relatively complex modulator, as compare[...]
Article : texte imprimé
Gajanayake, C.J., Auteur ; Vilathgamuwa, D. M., Auteur ; Poh Chiang Loh, Auteur |Distributed generation (DG) systems are usually connected to the grid using power electronic converters. Power delivered from such DG sources depends on factors like energy availability and load demand. The converters used in power conversion do[...]
