Optimized operation of current fed dual active bridge dc-dc converter for pv applications To Get this projects Call : 9566355386 / 99625 88976 Visit : www.lemenizinfotech.com / www.ieeemaster.com Mail : projects@lemenizinfotech.com

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Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Optimized Operation of Current-Fed Dual Active
Bridge DC-DC Converter for PV Applications
Abstract
Introduction:
In addition, the direct input current controllability and extra
control freedom of CF-DAB converter make it possible to buffer
the double-line-frequency energy in grid-interactive PV systems
without using electrolytic capacitors in the dc-link. Therefore,
the PV system achieves high reliability as well as high efficient
maximum power point tracking. This paper studies the
optimized operation of CF-DAB converter for PV application in
order to improve the system efficiency. The operating principle
and soft-switching conditions over the wide operating range are
thoroughly analyzed with phase shift and duty cycle control, and
an optimized operating mode is proposed to achieve minimum
root-mean-square (rms) transformer current. The proposed
operating mode can extend the soft-switching region and reduce
the power loss, especially under heavy load and high input
voltage. And the efficiency can be further improved with higher
dc-link voltage.
Existing system:

2. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
DAB converter is a preferred option, as it has a small
component count, offers isolation, and allows for high power
operation. In addition, it has the ability to accommodate a wide
range of voltage levels, as it may be controlled to operate in
buck or boost modes.
Proposed system:
This paper proposes an optimized operating mode for CF-
DAB converter in PV application, which minimizes transformer
rms current and extends the soft switching operating range. The
operating mode extends the ZVS range and gives less power
loss, especially under heavy load and high input voltage. The
front-end CF-DAB dc-dc converter provides galvanic isolation
and boots the PV voltage to a suitable level, so that both dc-dc
converter and inverter can operates efficiently.
Advantages:

3. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
 Wide input voltage range, high step-up ratio, low input
current ripple and multiport interface.
Applications:
 PV applications.
Block diagram:
INPUT
DC supply
Low voltage
converter 1
High voltage
converter 2
Isolation
transformer
Single phase
inverter
Load
FilterGate driver circuit
BUFFER
circuit
PIC controller
circuit
5VDC
12 V
DC

4. Do Your Projects With Domain Experts…
Copyright © 2015 LeMeniz Infotech. All rights reserved
LeMeniz Infotech
36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue,
Pondicherry-605 005.
Call: 0413-4205444, +91 9566355386, 99625 88976.
Web : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Tools and software used:
 MPLAB – microcontroller programming.
 ORCAD – circuit layout.
 MATLAB/Simulink – Simulation.