11 Result(s)
within
Article
Yi-Kang **ng
Industrial Chemistry/Chemical Engineering
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Article
Rapid Determination of Volatile Compounds in Gymnotheca involucrata Pei. by MAE–HS-SPME Followed by GC–MS
Microwave-assisted extraction (MAE) and headspace solid-phase microextraction (HS-SPME) followed by gas chromatography–mass spectrometry (GC–MS) was developed for the rapid determination of the volatile chemic...
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Article
Proportional integral plus multi-frequency resonant current controller for grid-connected voltage source converter under imbalanced and distorted supply voltage conditions
This paper proposes a current control scheme for a grid-connected pulse width modulator (PWM) voltage source converter (GC-VSC) under imbalanced and distorted supply voltage conditions. The control scheme is i...
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Article
A new xanthone from the roots of Securidaca inappendiculata
A new xanthone, 3-hydroxy-1,2,5,8-tetramethoxyxanthone, along with three known ones, 1,3,8-trihydroxy-2-methoxyxanthone, 1,3,8-trihydroxy-4-methoxyxanthone and 1,3,6-trihydroxy-2,7-dimethoxyxanthone, was isola...
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Article
Dynamic modeling and direct power control of wind turbine driven DFIG under unbalanced network voltage conditions
This paper proposes an analysis and a direct power control (DPC) design of a wind turbine driven doubly-fed induction generator (DFIG) under unbalanced network voltage conditions. A DFIG model described in the...
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Article
Study on inverter fault-tolerant operation of PMSM DTC
This paper presents an investigation of inverter fault-tolerant operation for a permanent magnet synchronous motor (PMSM) direct torque control (DTC) system under various inverter faults. The performance of a ...
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Article
Adaptive rotor current control for wind-turbine driven DFIG using resonant controllers in a rotor rotating reference frame
This paper proposes an adaptive rotor current controller for doubly-fed induction generator (DFIG), which consists of a proportional (P) controller and two harmonic resonant (R) controllers implemented in the ...
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Article
Multi-frequency proportional-resonant (MFPR) current controller for PWM VSC under unbalanced supply conditions
This letter presents a multi-frequency proportional-resonant (MFPR) current controller developed for PWM voltage source converter (VSC) under the unbalanced supply voltage conditions. The delta operator is use...
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Article
Enhanced control of DFIG-used back-to-back PWM VSC under unbalanced grid voltage conditions
This paper presents a unified positive-and negative-sequence dual-dq dynamic model of wind-turbine driven doublyfed induction generator (DFIG) under unbalanced grid voltage conditions. Strategies for enhanced con...
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Article
Numerical simulation on silane plasma chemistry in pulsed plasma process to prepare a-Si :H thin films
We numerically calculated the effects of pulse modulation (plasma-on and -off times) on the concentration changes of the chemical species (SiH4, SiHx, SiHx+ and polymerized negative ions) and also the growth rate...
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Article
Dynamic modelling and robust current control of wind-turbine driven DFIG during external AC voltage dip
Doubly-Fed Induction Generator (DFIG), with vector control applied, is widely used in Variable-Speed Constant-Frequency (VSCF) wind energy generation system and shows good performance in maximum wind energy ca...
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Article
Harmonic detection an AC excited generation system based on in-phase correlation filtering
The paper reports results of investigation on the harmonic detection technique of a complicated power supply system such as an AC excited generation system, which has a variable fundamental frequency and low o...
