Adaptive DC bus voltage control for renewable energy production systems with uncertainties

2011 ◽  
Author(s):  
Hicham Chaoui ◽  
Pierre Sicard
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Production Systems ◽  
Voltage Control ◽  
Renewable Energy Production ◽  
Dc Bus ◽  
Bus Voltage

A Dynamic Decision Model for the Real-Time Control of Hybrid Renewable Energy Production Systems

2010 ◽  
Vol 4 (3) ◽  
pp. 323-333 ◽  
Author(s):  
Hanane Dagdougui ◽  
Riccardo Minciardi ◽  
Ahmed Ouammi ◽  
Michela Robba ◽  
Roberto Sacile
Keyword(s):  
Renewable Energy ◽  
Real Time ◽  
Energy Production ◽  
Decision Model ◽  
Production Systems ◽  
Real Time Control ◽  
Time Control ◽  
Renewable Energy Production ◽  
Hybrid Renewable Energy ◽  
Dynamic Decision Model

scholarly journals Inertial and Damping Characteristics of DC Distributed Power Systems Based on Frequency Droop Control

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2418 ◽  
Author(s):  
Liancheng Xiu ◽  
Liansong Xiong ◽  
Ping Yang ◽  
Zhiliang Kang
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Control Strategy ◽  
Power Grid ◽  
Voltage Control ◽  
Droop Control ◽  
Damping Effect ◽  
Distributed Power Systems ◽  
Dc Bus ◽  
Bus Voltage

With high penetration of renewable energy, DC distributed power systems (DDPSs) need to improve the inertia response and damping capacity of the power grid. The effects of main circuit parameters and control factors on the inertia, damping and synchronization of the DDPS were studied in this paper. Firstly, the dynamic model of DDPSs based on frequency droop control is established in the DC voltage control (DVC) timescale. Then, a static synchronous generator (SSG) model is used to analyze the parameters that affect the inertial level, damping effect and synchronization capability of the DDPS. The analysis results show that an optimal design of the frequency droop coefficient and proportional integral (PI) parameters of the DC bus voltage control loop can equivalently change the characteristics of inertia and damping when the frequency droop control strategy is applied to the DC/DC converter and the DC bus voltage control strategy is used in the grid-tied inverter. Simulation results verify the correctness of the conclusions. This paper helps to design an effective control strategy for DDPSs to enhance the inertial level and damping effect of the power grid and to improve the stable operation capability of renewable energy systems.

scholarly journals Highly Efficient Step-Up Boost-Flyback Coupled Magnetic Integrated Converter for Photovoltaic Energy

2018 ◽  
Author(s):  
Vo Thanh Vinh ◽  
Vu Thai Giang ◽  
Nguyen The Vinh
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
High Efficiency ◽  
Production Systems ◽  
Voltage Gain ◽  
Recovery Stage ◽  
Final Point ◽  
Voltage Stress ◽  
Renewable Energy Production ◽  
State Resistance

This paper presents a new high-efficiency-high-step-up based converter integrating two stype DC-DC Boost and Flyback coupled magnetic converter with recovery stage dedicated to smart HVDC distributed architecture in renewable energy production systems. Appropriate duty cycle ratio assumes that the recovery stage work with parallel charge and discharge to achieve high step-up voltage gain. Besides, the voltage stress on the main switch is reduced with a passive clamp circuit and thus, low on-state resistance Rdson of the main switch can be adopted to reduce conduction losses. The circuit is simple to control. As a final point of this research, the simulation and the prototype investigational results are presented to demonstrate the effectiveness of this proposed converter.

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