1. AZMI Mohd Alif Syahmi
2014 - 2015
THREE-PORT FLYBACK FOR PV
MICROINVERTER APPLICATIONS WITH
POWER PULSATION DECOUPLING
CAPABILITY
LMBE ESIEE
Objective
• Modelling the AC/DC and DC/DC converter
• Develop the control systems
MATLAB/Simulink (Fuzzy logic)
• Modeling the source of energy (Panel
Photovoltaic)
• Study of operation and modeling the subset
integration..
• Simulate the different condition
𝑢 𝑡 = 𝑈 sin 𝜔0 𝑡
𝑖 𝑡 = 𝐼 sin 𝜔0 𝑡 + 𝜑
𝑃0 𝑡 =
1
2
𝑈𝐼 cos 𝜑 +
1
2
𝑈𝐼 cos 2𝜔𝑡 + 𝜑
𝑤𝑖𝑡ℎ 𝜑 = 0
𝑃0 𝑡 =
1
2
𝑈𝐼 +
1
2
𝑈𝐼 cos 2𝜔𝑡
Introduction
Every each year the total energy consummation is increasing and most of them made
from non-renewable resources like fossils Earth minerals, metal ores, fossil fuels and etc.
Due to depletion of these sources of energy for the future it encourages the industries to
do the development and studies in order to achieve the most efficient system at
affordable price for the benefit of the future. AC module is chosen to develop due to the
advantage is that it eliminates the losses between PV since there is only one PV panel and
one inverter, and it supports the optimum setting between both of them. It includes the
possibility of easy expansion of the system, due to the modular structure. It also has the
possibility of becoming a device "plug-and-play", which can be used by people without
special knowledge of electrical installations.
Proposed topology by Hu. And Al
Controller (Predictive control strategy)
Circuit design in PSIM Simulation
Controller design in MATLAB Simulink
Simulation Results
Voltage across Decoupling capacitor
AC Voltage PWM
DC Voltage
Single Stage DC/AC converter