Analysis of DC bus load transients for solar stand-alone syste

The objective of this thesis is to design and analyze DC bus load transients for solar stand-alone system in MATLAB/SIMULINK software. In this thesis a home is connected to a photovoltaic solar energy system instead of the conventional grid. Increased pollution and global warming caused by burning of fossil fuels and ever- increasing oil prices are motivating people to choose alternative energy sources such as this.;This energy from a photovoltaic array is distributed to several residential loads connected to DC bus. The problem arises when this energy is distributed to various loads such as major appliances, electric motors, and transformers, which when first energized lead to high starting currents. These high starting currents lead to voltage drops across other bus-connected loads. Voltage dips during starting of large motors can trip other motors operating on the same bus. Due to these voltage dips computers and other electronic devices may also be affected.;The residential system involves a solar panel, MPPT, boost converter, voltage control loop, PID controller, resistive load and transient load connected to DC bus. DC bus voltage is controlled by voltage controller loop; PID controller tuning is done for stable output.;The objective of this thesis is to illustrate the analysis of DC bus load transients using MATLAB/Simulink. Transient load carrying current of 10 amps leads to high start-up currents and voltage drops more than 50 % across other bus-connected loads and reaches steady state due to MPPT as shown in the thesis. Investigation for different irradiation levels is also done.