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RISS 인기검색어
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- 저자 : Thai-Thanh Nguyen (검색결과 50 건)
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Two new species of Camellia (Theaceae) from Vietnam
NGUYEN, Lieu Thi,TRAN, Ninh,CHIYOMI, Uematsu,HIRONORI, Katayama,LUONG, Dung Van,HOANG, Son Thanh,NGUYEN, Ky Danh,NGUYEN, Hung Viet,THAI, Toan Canh The Korean Society of Plant Taxonomists 2018 식물 분류학회지 Vol.48 No.2
Two new species of Camellia (Theaceae) are described from Vietnam: Camellia vuquangensis Luong, Tran & L. T. Nguyen and Camellia hatinhensis Luong, Tran & L. T. Nguyen. The new taxa were collected from Vu Quang National Park in the center of Vietnam. The new finds are morphologically dissimilar to all known Camellia species. Recent Camellia discoveries have increased the number of species recorded in Vietnam from 50 to 75, making Vietnam a center of diversity and a crucial area for more research into the diversity and distributions of Camellia.
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Two new species of Camellia (Theaceae) from Vietnam
( Lieu Thi Nguyen ),( Ninh Tran ),( Uematsu Chiyomi ),( Katayama Hironori ),( Dung Van Luong ),( Son Thanh Hoang ),( Ky Danh Nguyen ),( Hung Viet Nguyen ),( Toan Canh Thai ) 한국식물분류학회 2018 식물 분류학회지 Vol.48 No.2
Two new species of Camellia (Theaceae) are described from Vietnam: Camellia vuquangensis Luong, Tran & L. T. Nguyen and Camellia hatinhensis Luong, Tran & L. T. Nguyen. The new taxa were collected from Vu Quang National Park in the center of Vietnam. The new finds are morphologically dissimilar to all known Camellia species. Recent Camellia discoveries have increased the number of species recorded in Vietnam from 50 to 75, making Vietnam a center of diversity and a crucial area for more research into the diversity and distributions of Camellia.
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Applying Model Predictive Control to SMES System in Microgrids for Eddy Current Losses Reduction
Thai-Thanh Nguyen,Hyeong-Jun Yoo,Hak-Man Kim Institute of Electrical and Electronics Engineers 2016 IEEE transactions on applied superconductivity Vol.26 No.4
<P>This paper presents a model predictive control for the superconducting magnetic energy storage (MPC-based SMES) system, which can be applied to a voltage source converter and a dc/dc chopper in the SMES system together. The SMES system is implemented in a microgrid to control the constant power flow at the point of common coupling, frequency, and voltage of microgrid. The control performance of the MPC-based SMES system is compared with that of the proportional-integral (PI) control method. The harmonics involved in dc current for the superconducting coil are analyzed to estimate the reduction of the eddy current losses compared to PI technique. The efficacy of the proposed control system is verified via simulations in the MATLAB/Simulink environment.</P>
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Estimating Stability of MTDC Systems with Different Control Strategy
Thai-Thanh Nguyen,Ho-Ik Son,Hak-Man Kim 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.2
The stability of a multi-terminal direct current (MTDC) system is often influenced by its control strategy. To improve the stability of the MTDC system, the control strategy of the MTDC system must be appropriately adopted. This paper deals with estimating stability of a MTDC system based on the line-commutated converter based high voltage direct current (LCC HVDC) system with an inverter with constant extinction angle (CEA) control or a rectifier with constant ignition angle (CIA) control. In order to evaluate effects of two control strategies on stability, a MTDC system is tested on two conditions: initialization and changing DC power transfer. In order to compare the stability effects of the MTDC system according to each control strategy, a mathematical MTDC model is analyzed in frequency domain and time domain. In addition, Bode stability criterion and transient response are carried out to estimate its stability.
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Estimating Stability of MTDC Systems with Different Control Strategy
Nguyen, Thai-Thanh,Son, Ho-Ik,Kim, Hak-Man The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.2
The stability of a multi-terminal direct current (MTDC) system is often influenced by its control strategy. To improve the stability of the MTDC system, the control strategy of the MTDC system must be appropriately adopted. This paper deals with estimating stability of a MTDC system based on the line-commutated converter based high voltage direct current (LCC HVDC) system with an inverter with constant extinction angle (CEA) control or a rectifier with constant ignition angle (CIA) control. In order to evaluate effects of two control strategies on stability, a MTDC system is tested on two conditions: initialization and changing DC power transfer. In order to compare the stability effects of the MTDC system according to each control strategy, a mathematical MTDC model is analyzed in frequency domain and time domain. In addition, Bode stability criterion and transient response are carried out to estimate its stability.
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