2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289)

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Islanding behaviour of grid-connected PV inverters operating under different control schemes
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 3 - Trang 1506-1511 vol.3
A. Kotsopoulos, J.L. Duarte, M.A.M. Hendrix, P.J.M. Heskes
This paper compares the islanding behaviour of different inverter implementations, which have current source or voltage source characteristics. Measurements were made on a number of commercially available inverters, and simulation models were developed to enable further investigation of the influence of the type of control system on islanding operation. Additionally, a modified active-frequency-dr... hiện toàn bộ
#Inverters #Frequency #Voltage control #Distortion measurement #Control system synthesis #Photovoltaic systems #Solar power generation #Production systems #Safety #Mesh generation
A sampling algorithm for digitally controlled boost PFC converters
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 4 - Trang 1693-1698 vol.4
D.M. Van de Sype, K. De Gusseme, A.P. Van den Bossche, J.A. Melkebeek
Digital control of a boost power factor correction (PFC) converter requires sampling of the input current. As the input current contains a considerable amount of switching ripple and high frequency switching noise, the choice of the sampling instant is very important. To avoid aliasing without employing a (very) high sampling frequency, the sampling is synchronized with the pulse width modulation ... hiện toàn bộ
#Sampling methods #Digital control #Pulse width modulation #Power factor correction #Frequency synchronization #Space vector pulse width modulation #Signal sampling #Current measurement #Noise measurement #Algorithm design and analysis
Fast transient response with combined linear-non-linear control applied to buck converters
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 4 - Trang 1587-1592 vol.4
A. Barrado, R. Vazquez, A. Lazaro, J. Pleite, E. Olias
Nowadays, one of the main challenges for power supplies designers is to feed the latest generation of microprocessors and DSPs, since they require high current slew rates together with low output voltage. In this paper, a novel control technique is presented to help the designers to comply with the current requirements. The proposed combined linear-nonlinear control (LnLC) scheme increases signifi... hiện toàn bộ
#Transient response #Voltage control #Power supplies #Feeds #Power generation #Microprocessors #Digital signal processing #Low voltage #Rectifiers #Buck converters
Commutation torque ripple reduction in brushless DC motor drives using a single DC current sensor
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 2 - Trang 985-990 vol.2
Chang-hee Won, Joong-ho Song, I. Choy
This paper presents a comprehensive study result on reducing the commutation torque ripples generated in brushless DC motor drives with only a single DC-link current sensor provided in the inverter DC-link. In brushless DC motor drives equipped with only a single current sensor, it seems that commutation torque ripple suppression which is practically effective in low speed as well as high speed re... hiện toàn bộ
#Commutation #Torque #Brushless DC motors #Equations #Current control #Intelligent sensors #Switches #Pulse width modulation inverters #Sensor systems #DC motors
Layout optimization to reduce EMI of a switched mode power supply
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 4 - Trang 2021-2026 vol.4
J.-L. Schanen, L. Jourdan, J. Roudet
This paper shows how to reach the "best" possible layout, satisfying simultaneously the minimal surface, all technological constraints due to the geometry of the components, and a reduced EMC signature. For this purpose, all components must be modeled in the high frequency domain, including interconnects. An interesting harmonic approach is used to predict EMI spectrum, which avoids the prohibitiv... hiện toàn bộ
#Switched-mode power supply #Electromagnetic interference #Electromagnetic compatibility #Capacitors #Circuit simulation #Predictive models #Insulation life #Geometry #Frequency domain analysis #Integrated circuit interconnections
Distributed control scheme for parallel connected soft-switching high-power high-frequency inverters
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 3 - Trang 1395-1400 vol.3
A. Schonknecht, R.W. De Doncker
Inductive heating applications, such as pipe welding or steel-tape annealing, require electrical power ratings of several MWs at frequencies up to 100 kHz and higher. To realize this high power frequency product, several inverters or several power semiconductor devices have to be connected in parallel, because the maximum rating of a single inverter unit is often far below the required rated power... hiện toàn bộ
#Distributed control #Inverters #Communication system control #Frequency #Control systems #Welding #Annealing #Power semiconductor devices #Voltage control #Zero voltage switching
Protection of VSC-multi-terminal HVDC against DC faults
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 2 - Trang 719-724 vol.2
Lianxiang Tang, Boon-Teck Ooi
Voltage-source converters (VSCs), by themselves, are defenseless against DC faults. Their anti-parallel diodes conduct as rectifier bridges to feed the fault. Their IGBTs (insulated gate bipolar transistors) are helplessly by-passed, unable to extinguish the fault current. This paper shows how a VSC-multi-terminal high voltage direct current (MTDC) transmission system can survive DC faults by a us... hiện toàn bộ
#Protection #HVDC transmission #Insulated gate bipolar transistors #Converters #Power conversion #Voltage #Diodes #Rectifiers #Bridge circuits #Feeds
Automatic tuning of coupled inductor filters
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 2 - Trang 591-596 vol.2
R. Balog, P.T. Krein
A coupled inductor filter is presented with interesting notch mode filtering characteristics. Although this configuration has been long established, it has received little attention. The new contribution of this paper is to provide an automatic tuning process that can make use of the frequency domain characteristics of the coupled inductor building block. In a sense, this becomes an "active" filte... hiện toàn bộ
#Inductors #Active filters #Nonlinear filters #Coupling circuits #Magnetic separation #Passive filters #Frequency conversion #Magnetic devices #Circuit optimization #Smoothing methods
A geometry based simplified analytical model of switched reluctance machines for real-time controller implementation
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 2 - Trang 839-844 vol.2
S.A. Hossain, I. Husain
A geometry based simplified analytical model that decouples the current and position effect on flux and torque in the switched reluctance motor (SRM) drives is presented in this paper. This model gives a direct relation between phase current and torque accounting for the high degree of nonlinearity of the machine. A simple flux model and its inverse relationship have been developed to meet diverse... hiện toàn bộ
#Geometry #Analytical models #Reluctance machines #Reluctance motors #Torque control #Electromagnetic coupling #Rotors #Magnetic analysis #Solid modeling #Student members
A control method in dq synchronous frame for PWM boost rectifier under generalized unbalanced operating conditions
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289) - Tập 3 - Trang 1425-1430 vol.3
Yongsug Suh, V. Tijeras, T.A. Lipo
This paper proposes a new control scheme for regulating the instantaneous power for PWM boost type rectifiers under generalized unbalanced operating conditions. By nullifying the oscillating components of instantaneous power at the poles of the converter instead of the front-end through solving a set of nonlinear control equations in real time, the harmonics in the output DC voltage can be elimina... hiện toàn bộ
#Pulse width modulation #Rectifiers #Power system harmonics #Open loop systems #Analog-digital conversion #Voltage control #Nonlinear equations #Size control #AC generators #DC generators
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