The Experts below are selected from a list of 35157 Experts worldwide ranked by ideXlab platform
Philip A. Mawby - One of the best experts on this subject based on the ideXlab platform.
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a fast power loss calculation method for long real time thermal simulation of igbt modules for a three phase Inverter system
International Journal of Numerical Modelling-electronic Networks Devices and Fields, 2006Co-Authors: Z Zhou, M.s. Khanniche, Petar Igic, Philip A. Mawby, S T Kong, M S TowersAbstract:A fast power losses calculation method for long real time thermal simulation of IGBT module for a Three-Phase Inverter system is presented in this paper. The speed-up is obtained by simplifying the representation of the Three-Phase Inverter at the system modelling stage. This allows the Inverter system to be simulated predicting the effective voltages and currents whilst using large time-step. An average power losses is calculated during each clock period, using a pre-defined look-up table, which stores the switching and on-state losses generated by either direct measurement or automatically based upon compact models for the semiconductor devices. This simulation methodology brings together accurate models of the electrical systems performance, state of the art-device compact models and a realistic simulation of the thermal performance in a usable period of CPU time and is suitable for a long real time thermal simulation of Inverter power devices with arbitrary load. Thermal simulation results show that with the same IGBT characteristics applied, the proposed model can give the almost same thermal performance compared to the full physically based device modelling approach. Copyright © 2006 John Wiley & Sons, Ltd.
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a fast power loss calculation method for long real time thermal simulation of igbt modules for a three phase Inverter system
European Conference on Power Electronics and Applications, 2005Co-Authors: Z Zhou, M.s. Khanniche, Petar Igic, S T Kong, M S Towers, Philip A. MawbyAbstract:A fast power losses calculation method for long real time thermal simulation of IGBT module for a Three-Phase Inverter system is presented in this paper. The speed-up is obtained by simplifying the representation of the Three-Phase Inverter at the system modelling stage this allows a Inverter system to be simulated predicting the effective voltages and currents whilst using large time-step. An average power losses is calculated during each clock period, using a pre-defined look-up table, which stores the switching and on-state losses generated by either direct measurement or automatically based upon compact models for the semiconductor devices. This simulation methodology brings together accurate models of the electrical systems performance, state of the art-device compact models and a realistic simulation of the thermal performance in a useable period of CPU time and is suitable for a long real time thermal simulation of Inverter power devices with arbitrary load. Thermal simulation results show that with the same IGBT characteristics applied, the proposed model can give the almost same thermal performance compared to the full physically based device modelling approach
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Power Loss Calculation and Thermal Modelling for a Three Phase Inverter Drive System JES
2005Co-Authors: Z Zhou, M.s. Khanniche, Petar Igic, S. M. Towers, Philip A. MawbyAbstract:Power losses calculation and thermal modelling for a Three-Phase Inverter power system is presented in this paper. Aiming a long real time thermal simulation, an accurate average power losses calculation based on PWM reconstruction technique is proposed. For carrying out the thermal simulation, a compact thermal model for a Three-Phase Inverter power module is built. The thermal interference of adjacent heat sources is analysed using 3D thermal simulation. The proposed model can provide accurate power losses with a large simulation time-step and suitable for a long real time thermal simulation for a three phase Inverter drive system for hybrid vehicle applications.
Akshay Kumar Rathore - One of the best experts on this subject based on the ideXlab platform.
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dual three pulse modulation based high frequency pulsating dc link two stage three phase Inverter for electric hybrid fuel cell vehicles applications
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014Co-Authors: U R Prasanna, Akshay Kumar RathoreAbstract:This paper proposes a new modulation technique dual three-pulse modulation (DTPM) to switch dual full-bridge output capacitorless dc/dc converters to develop a pulsating dc link voltage encoding six pulse rectified output information. The pulsating voltage is directly fed to a standard six-pack Inverter to develop Three-Phase ac output voltage. Proposed Inverter and modulation are suitable for electric, hybrid electric, and fuel cell vehicles. The absence of the dc link capacitor and DTPM produce pulsating dc voltage that retains the sine-wave information (six- or Three-Phase rectified output) at the input of Three-Phase Inverter. Inverter devices are modulated for 33% (one-third) of the line cycle and remains in their unique switching state (either on for 33% or off for 33%) and results in average device switching frequency of one-third of switching frequency. This results in 66% savings in switching losses. In addition, devices are not switched when the current through them is at its peak value and total savings in switching loss accounts to be up to 86.7% in comparison with a standard voltage source Inverter with sine pulsewidth modulation. This paper presents operation and analysis of the pulsating dc link two-stage Inverter controlled by the proposed DTPM at the front end and 33% modulation for the six-pack Inverter along with the implementation. Design of the two-stage Three-Phase Inverter has been illustrated. Analysis has been verified through simulation results using PSIM 9.0.4. Experimental results on a lab prototype have been demonstrated to validate the claims and the proposal.
Yong Kang - One of the best experts on this subject based on the ideXlab platform.
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analysis and calculation of dc link current and voltage ripples for three phase Inverter with unbalanced load
IEEE Transactions on Power Electronics, 2015Co-Authors: Wu Zhou, Yong KangAbstract:In this paper, an analysis and calculation of the dc-link current and voltage ripples are presented for a Three-Phase Inverter with unbalanced load. A comparison of the dc-link average and root-mean-square (rms) currents between considering and ignoring high frequency harmonics of the output current is drawn. It is shown that high frequency harmonic currents have little effect on the dc-link current, and therefore, they can be ignored. Based on the symmetrical components method, the dc-link average and harmonic rms currents are derived, and the dc-link voltage ripple is compared between the balanced and unbalanced loads. It can be found that the dc-link current and voltage ripples consist of not only high frequency harmonics but also the double fundamental frequency harmonic, and the voltage ripple is independent of the positive-sequence component and determined by the negative-sequence component, under the unbalanced load. Experimental results are shown to verify the accuracy of the theoretical analysis.
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Research of RCD clamp snubber for high power combined Three-Phase Inverter
2008Co-Authors: Yu Chen, Xuejun Pei, Yong KangAbstract:The new problems when applying a conventional resistor-capacitor-diode (RCD) clamp snubber to the high power combined Three-Phase Inverter system are investigated. In high power application, the existence of parasitic induction in dc bus makes an additional energy loss on the RCD clamp snubber. The particular topology of combined Three-Phase Inverter makes this situation worse. In this paper, a combined Three-Phase Inverter model with equal parasitic induction is built, the transient analysis is presented to show the effect of parasitic induction on the RCD snubbers, and the relation between the additional energy loss and the parameters of Inverter is deduced. The results of the analysis are verified both by the simulation of SABER and a 300 kVA prototype with the combined Three-Phase configuration.
A Flores - One of the best experts on this subject based on the ideXlab platform.
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delay compensation in model predictive current control of a three phase Inverter
IEEE Transactions on Industrial Electronics, 2012Co-Authors: Patricio Cortes, Jose Rodriguez, C Silva, A FloresAbstract:When control schemes based on finite control set model predictive control are experimentally implemented, a large amount of calculations is required, introducing a considerable time delay in the actuation. This delay can deteriorate the performance of the system if not considered in the design of the controller. In this paper, the problem is described, and the solution to this issue is clearly explained using a Three-Phase Inverter as an example. Experimental results to validate this solution are shown.
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delay compensation in model predictive current control of a three phase Inverter
IEEE Transactions on Industrial Electronics, 2012Co-Authors: Patricio Cortes, Jose Rodriguez, C Silva, A FloresAbstract:When control schemes based on finite control set model predictive control are experimentally implemented, a large amount of calculations is required, introducing a considerable time delay in the actuation. This delay can deteriorate the performance of the system if not considered in the design of the controller. In this paper, the problem is described, and the solution to this issue is clearly explained using a Three-Phase Inverter as an example. Experimental results to validate this solution are shown.
U R Prasanna - One of the best experts on this subject based on the ideXlab platform.
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dual three pulse modulation based high frequency pulsating dc link two stage three phase Inverter for electric hybrid fuel cell vehicles applications
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014Co-Authors: U R Prasanna, Akshay Kumar RathoreAbstract:This paper proposes a new modulation technique dual three-pulse modulation (DTPM) to switch dual full-bridge output capacitorless dc/dc converters to develop a pulsating dc link voltage encoding six pulse rectified output information. The pulsating voltage is directly fed to a standard six-pack Inverter to develop Three-Phase ac output voltage. Proposed Inverter and modulation are suitable for electric, hybrid electric, and fuel cell vehicles. The absence of the dc link capacitor and DTPM produce pulsating dc voltage that retains the sine-wave information (six- or Three-Phase rectified output) at the input of Three-Phase Inverter. Inverter devices are modulated for 33% (one-third) of the line cycle and remains in their unique switching state (either on for 33% or off for 33%) and results in average device switching frequency of one-third of switching frequency. This results in 66% savings in switching losses. In addition, devices are not switched when the current through them is at its peak value and total savings in switching loss accounts to be up to 86.7% in comparison with a standard voltage source Inverter with sine pulsewidth modulation. This paper presents operation and analysis of the pulsating dc link two-stage Inverter controlled by the proposed DTPM at the front end and 33% modulation for the six-pack Inverter along with the implementation. Design of the two-stage Three-Phase Inverter has been illustrated. Analysis has been verified through simulation results using PSIM 9.0.4. Experimental results on a lab prototype have been demonstrated to validate the claims and the proposal.
