Transient and Steady-State Operational Limits for Ship Roll

1993 ◽  
Vol 46 (11S) ◽  
pp. S47-S52 ◽  
Author(s):  
Steven R. Bishop ◽  
Jesse Rebello de Souza

This paper investigates the safe operational limits of roll for small vessels in regular waves through the use of an archetypal model of ship motion. The technique incorporates steady-state analysis with methods of quantifying the engineering integrity of transient motions. Both analytical and numerical methods are used and compared. The resonant response of the vessel is examined to reveal unacceptable solutions and superimposed on parameter space diagrams which include lower bounds for fractal erosion of basins of attraction.

Author(s):  
M. Venkatesan ◽  
R. Rajeswari ◽  
M. Kaliyamoorthy ◽  
M. Srithar

The transient and steady state analysis of Modified Three Phase Multilevel Inverter (MMLI) for Photovoltaic (PV) system fed from single DC input is presented in this paper. The transient and Steady state conditions of modified three phase multilevel inverter are analyzed using Proportional Integral (PI) and Fuzzy Logic Controller (FLC) with change in irradiance level of PV panels. The three phase multilevel inverter  is designed with reduce number of power semiconductor switches, components, single DC input and effectively controlled by using Space Vector Pulse width Modulation technique (SVPWM).  The obtained results are validated using MATLAB/ Simulink.Finaly, semiconductor switches and componets utilization of MMLI is compared with other similar topologies.


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