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Comparison of common-mode voltage in three-phase quasi-Z-source inverters using different shoot-through implementation methods
, Article Proceedings - 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2018 ; 4 June , 2018 , Pages 1-6 ; 9781538625088 (ISBN) ; Zolghadri, M. R ; Yaghoubi, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2018
Abstract
In Z-source family inverters, shoot-through (ST) states are applied as a part of passive state in each switching cycle. The distribution of ST intervals along a switching period affects the system parameters as total harmonic distortion (THD), switching loss and common-mode voltage (CMV). In this paper, ST methods in a three-phase quasi-Z-source inverter (q-ZSI) are compared due to the CMV level. High-frequency harmonics of CMV cause leakage current flow in a transformerless grid-connected photovoltaic (PV) system. Through the comparison of the ST methods, the method with minimum CMV is identified. The experimental results are Prasented for a low voltage q-ZSI prototype. © 2018 IEEE
A markovian performance model for networks-on-chip
, Article Proceedings of the 16th Euromicro Conference on Parallel, Distributed and Network-Based Processing, PDP 2008, 13 February 2008 through 15 February 2008, Toulouse ; 2008 , Pages 157-164 ; 0769530893 (ISBN); 9780769530895 (ISBN) ; Rahmati, D ; Sarbazi Azad, H ; Hessabi, S ; Sharif University of Technology
2008
Abstract
Network-on-Chip (NoC) has been proposed as a solution for addressing the design challenges of future high-performance nanoscale architectures. Thus, it is of crucial importance for a designer to ha ve access to fast methods for evaluating the performance of on-chip networks. To this end, we present a Markovian model for evaluating the latency and energy consumption of on-chip networks. We compute the a verage delay due to path contention, virtual channel and crossbar switch arbitration using a queuing-based approach, which can capture the blocking phenomena of wormhole switching quite accurately. The model is then used to estimate the power consumption of all routers in NoCs. The performance...