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- 저자 : 강안종(A.J. Kang) (검색결과 3 건)
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강안종(A.J. kang),김태우(T.W. Kim),김학성(H.S. Kim) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
As the maximum power operating point (MPOP) of photovoltaic (PV) power generation systems changes with varying atmospheric conditions such as solar radiation and temperature, an important consideration in the design of efficient PV system is to track the MPOP correctly. Although the efficiency of these Maximum Power Point Tracking algorithms is usually high, it drops noticeably in case of rapidly changing atmospheric conditions. This paper describes common MPPT control algorithm: Constant Voltage Control, Perturbation and Observation(P&O), Incremental Conductance (IncCnd) and proposes a new MPPT algorithm based on P&O algorithm. The conception and control principles of the proposed MPPT method are explained in detail and its validity of the proposed method is verified through several simulated results. As it doesn't use digital signal processor, this MPPT method has the merits of both a cost efficiency and a simple control circuit design. Therefore, it is considered that the proposed MPPT method is proper to low power, low cost PV applications.
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김태우(T.W.Kim),진기호(K.H.Chin),강안종(A.J.Kang),김학성(H.S.Kim) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
This paper proposes a novel ZVZCS-PWM Boost Converter, It enables the main switch to be turned on and off with both zero voltage and zero current and the auxiliary switch to be turned on and off with ZCS, the rectify diode to be turned on and off with ZVS Moreover, This converter is suitable for not only minority carrier device but also majority carrier device, The auxiliary resonant circuit of the proposed boost converter is placed out the main power path, therefore, there are no voltage/current stresses on the main switch and diode, The operation of the proposed boost converter is explained and analyzed theoretical and experimentally, from a prototype operating at 100kHz, with an input voltage rated at 50V
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김태우(T.W. Kim),강안종(A.J. Kang),진기호(G.H. Chin),김학성(H.S. Kim) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(2)
In tills paper, an Improved full wave mode ZVT - PWM DC-DC Converter is presented to maximize the regeneration ratio of resonant energy by only putting an additional diode in seres with auxiliary switch. The operation of auxiliary switch in a half wave mode makes possible the soft switching con야tion of all switches Furthermore, the increase of the regeneration ratio to resonant energy results in low conduction losses and minimum voltage and current stresses The operation principles of the proposed converters are analyz -00 using the PWM boost converter topology as an example Theoretically analysis and experimen -tal results venfy the validity of the boost converter topology with the proposed full wave mode ZVT-PWM converters<br/>
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