This document presents a seminar on a novel three-port converter (TPC) with high voltage gain for standalone renewable power systems. The TPC uses only three switches to control power flow between an input renewable energy source port, a bidirectional battery storage port, and a high-voltage load port. It can achieve a higher voltage gain for both low-voltage ports using a lower turns ratio and reasonable duty ratio. Finally, the document discusses implementing the TPC with a PV system to power a brushless DC motor drive and presenting simulation results using Matlab/Simulink software.

1. Seminar on
High-Voltage Gain with Three-Port Converter
fed BLDC motor drive
Presented By
K.NANDHINI
[178A1A0214]
DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
RISE KRISHNA SAI PRAKASAM GROUP OF INSTITUTIONS
(Affiliated to Jawaharlal Nehru Technological University, Kakinada)
(Accredited by NBA – UG in ECE, EEE, CE, ME & CSE Certified by ISO 9001: 2017)
NH-16, Valluru,-523272, Ongole, Prakasam District, A.P
(2018 – 2022)

2. Abstract
• In this project a novel three-port converter (TPC) with
high-voltage gain for stand-alone renewable power
system applications is proposed.
• This converter uses only three switches to achieve the
power flow control.
• The converter can have a higher voltage gain for both
low-voltage ports with a lower turns ratio and a
reasonable duty ratio.
• finally the Three port converter(TPC) implemented
with PV system and applied to Brushless DC motor
Drive and simulation results are presented by using
Matlab/simulink software.

3. Introduction
• Renewable energy sources such as Fuel-Cells, Photo-Voltaic
(PV) arrays are increasingly being used in automobiles,
residential and commercial buildings.
• Photovoltaic (PV) system is one of the popular renewable
energy sources , due to it’s intermittent nature.
• PV source cannot provide sufficient power when the load
varies rapidly, then energy storage elements, such as
batteries, are used to smoothly supply energy to load in
stand-alone renewable power system applications.

4. PV Cell
4
A number of solar cells electrically
connected to each other and mounted in
a single support structure or frame is
called a ‘photovoltaic module’. Modules
are designed to supply electricity at a
certain voltage, such as a common 12
volt system. The current produced is
directly dependent on the intensity of
light reaching the module. Several
modules can be wired together to form
an array. Photovoltaic modules and
arrays produce direct-current electricity.
They can be connected in both series and
parallel electrical arrangements to
produce any required voltage and
current combination.

5. PV modeling
5
a solar cell can be modeled by a current
source and an inverted diode connected in
parallel to it. It has its own series and parallel
resistance. Series resistance is due to
hindrance in the path of flow of electrons
from n to p junction and parallel resistance is
due to the leakage current.
 
I exp 1
s s
ph s
sh
v R I v R I
I I q
NKT R
 
  

   
   
 
 

6. Stand-Alone PV System
This kind of system uses batteries to store electricity produced by photovoltaic cells. There
is no connection to the utility power grid so a building can operate completely
independently. A stand-alone system is more complicated and expensive, as well as
requiring a little more maintenance, like refilling water in your batteries every so often.

7. Grid-Tied PV System
In this type of setup an inverter in a building converts Direct Current (DC) Electricity into
Alternating Current (AC) Electricity so that it can be used by the building it is connected to
and other consumers on the power grid. One disadvantage to this type of system is that if
utility power goes out you cannot use solar power for backup. On the other hand, the only
maintenance with a grid-tied system is adjustment of panels due to the changing angle of
the sun during different seasons, and even this is optional.

8. Block diagram of Proposed Three port
Converter

9. Modes of TPC converter

10. Conclusion
In this project, novel TPC with PV source is proposed.
The converter has an input port for a renewable energy source, a bidirectional port for
energy storage elements, and an output port for a high-voltage load.
 The converter can provide a higher conversion ratio for both low input voltage ports
with less power switches, a lower turn’s ratio, a reasonable duty ratio, and a simple
control method.
 The TPC converter applied to BLDC motor to perform the current, speed and torque
with the help of Matlab/simulink environment.

11. REFERENCES
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[2] Y. P. Hsieh, J. F. Chen, T. J. Liang, and L. S. Yang, “Novel high step up dc–dc converter for
distributed generation system,” IEEE Trans. Ind. Electron., vol. 60, no. 4, pp. 1473–1482, Apr. 2013.
[3] A. I. Bratcu, I. Munteanu, S. Bacha, D. Picault, and B. Raison, “Cascaded dc–dc converter
photovoltaic systems: power optimization issues,” IEEE Trans. Ind. Electron., vol. 58, no. 2, pp.
403–411, Feb. 2011.
[4] M. Cacciato, A. Consoli, R. Attanasio, and F. Gennaro, “Soft-switching converter with HF
transformer for grid-connected photovoltaic systems,” IEEE Trans. Ind. Electron, vol. 57, no. 5, pp.
1678–1686, May 2010.
[5] Y. M. Chen, A. Q. Huang, and X. Yu, “A high step-up three-port dc–dc converter for stand-alone
PV/battery power systems,” IEEE Trans. Power Electron, vol. 28, no. 11, pp. 5049–5062, Nov. 2013.

12. THANK YOU