scholarly journals Scalable State-Space Model of Voltage Source Converter for Low-Frequency Stability Analysis

2020 ◽  
Author(s):  
Federico Cecati ◽  
Rongwu Zhu ◽  
Marius Langwasser ◽  
Marco Liserre ◽  
Xiongfei Wang
Keyword(s):  
Stability Analysis ◽  
State Space ◽  
State Space Model ◽  
Low Frequency ◽  
Frequency Stability ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Space Model

A NONLINEAR UNIFIED STATE-SPACE MODEL FOR SHIP MANEUVERING AND CONTROL IN A SEAWAY

2005 ◽  
Vol 15 (09) ◽  
pp. 2717-2746 ◽  
Author(s):  
THOR I. FOSSEN
Keyword(s):  
State Space ◽  
Transfer Functions ◽  
State Space Model ◽  
Low Frequency ◽  
Ship Maneuvering ◽  
Frequency Model ◽  
Space Model ◽  
Classic Theory ◽  
Space Formulation ◽  
And Control

This article presents a unified state-space model for ship maneuvering, station-keeping, and control in a seaway. The frequency-dependent potential and viscous damping terms, which in classic theory results in a convolution integral not suited for real-time simulation, is compactly represented by using a state-space formulation. The separation of the vessel model into a low-frequency model (represented by zero-frequency added mass and damping) and a wave-frequency model (represented by motion transfer functions or RAOs), which is commonly used for simulation, is hence made superfluous.

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