An integrated Control Approach and Power Management of Stand-alone Hybrid Wind/PV/Battery Power Generation System with Maximum Power Extraction Capability

In this literature, a new automated control strategy has been developed to manage the power supply from the wind power generation system to the load. The main objective of this research work is to develop a fuzzy logic–based pitch angle control and to develop a static transfer switch to make power balance between the wind power generation system and the loads. The power management control system is a progression of logic expressions, designed based on generating power and load power requirement. The outcome of this work targets at an improved power production, active and reactive power compensation and ensures system load constraints. To validate the proposed control strategy, a detailed simulation study is carried out on a 9-MW wind farm simulation simulated in MATLAB/Simulink environment.

Download Full-text

PV Power-Generation System with a Phase-Shift PWM Technique for High Step-Up Voltage Applications

International Journal of Photoenergy ◽

10.1155/2012/838231 ◽

2012 ◽

Vol 2012 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Cheng-Tao Tsai ◽

Sin-Hua Chen

Keyword(s):

Power Generation ◽

Phase Shift ◽

Pulse Width Modulation ◽

Maximum Power ◽

Generation System ◽

Output Stage ◽

Point Tracking ◽

Power Switches ◽

Power Generation System ◽

Pv Power Generation

A PV power-generation system with a phase-shift pulse-width modulation (PWM) technique for high step-up voltage applications is proposed. The proposed power-generation system consists of two stages. In the input stage, all power switches of the full-bridge converter with phase-shift technique can be operated with zero-current switching (ZCS) at turn-on or turn-off transition. Hence, the switching losses of the power switches can be reduced. Then, in the DC output stage, a voltage-doubler circuit is used to boost a high dc-link bus voltage. To supply a utility power, a dc/ac inverter is connected to induce a sinusoidal source. In order to draw a maximum power from PV arrays source, a microcontroller is incorporated with the perturbation and observation method to implement maximum power point tracking (MPPT) algorithm and power regulating scheme. In this study, a full load power of 300 W prototype has been built. Experimental results are presented to verify the performance and feasibility of the proposed PV power-generation system.

Download Full-text

Maximum Wind Power Tracking Strategy of Wind Power Generation System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.313-314.813 ◽

2013 ◽

Vol 313-314 ◽

pp. 813-816

Author(s):

Yue Hua Huang ◽

Huan Huan Li ◽

Guang Xu Li

Keyword(s):

Power Generation ◽

Wind Speed ◽

Wind Power ◽

Control Strategy ◽

Wind Power Generation ◽

Maximum Power ◽

Speed Ratio ◽

Generation System ◽

Maximum Wind ◽

Power Generation System

Aiming at maximum wind power tracking control problem of wind power generation system below the rated wind speed, this paper presents an improved MPPT control strategy by using turbulent part of the wind speed as a search signal to find the maximum power point. By using the Matlab/Simulink simulation of the wind power generation system below the rated wind speed, this paper proves the effectiveness of this control strategy. The simulation results show that improved MPPT control strategy can well control the wind turbine speed to track the wind speed changes to maintain optimum tip speed ratio and the maximum power coefficient.

Download Full-text