Download A High Step-Up Converter with Voltage-Multiplier

A High Step-Up Converter with Voltage-Multiplier
Modules for Sustainable Energy Applications
ABSTRACT
This project proposes a novel isolated high step-up converter for sustainable
energy applications. Through an adjustable voltage-multiplier module, the
proposed converter achieves a high step-up gain without utilizing either a
large duty ratio or a high turns ratio. The voltage-multiplier modules are
composed of coupled inductors and switched capacitors. Due to the passive
lossless clamped performance, leakage energy is recycled, which alleviates a
large voltage spike across the main switches and improves efficiency. Thus,
power switches with low levels of voltage stress can be adopted for reducing
conduction losses. In addition, the isolated topology of the proposed
converter satisfies electrical-isolation and safety regulations. The proposed
converter also possesses continuous and smooth input current, which
decreases the conduction losses, lengthens life time of the input source, and
constrains conducted electromagnetic-interference problems.
CIRCUIT DIAGRAM
EXISTING SYSTEM
Many isolated step-up converters without continuous and smooth input current
levels result in conducted electromagnetic-interference (EMI) problems. Thus, a
bulky input filter must be designed in order to meet safety regulations. Moreover,
such isolated step-up converters need more complex pulse-width modulation
(PWM) control, which increases cost and decreases reliability.
PROPOSED SYSTEM
The proposed high step-up converter with voltage-multiplier modules for
sustainable energy applications, which simultaneously satisfies the requirements
for electrical-isolation and safety regulations, is shown in Fig.
The advantages of the proposed converter are as follows.
 Voltage-multiplier modules make the voltage gain higher and voltage
stresses lower.
 The proposed converter possesses continuous and smooth input current,
which decreases the conduction losses, lengthens the life time of the input
source, and constrains conducted EMI problems.
 Due to the passive lossless clamped performance, the leakage energy is
recycled. Hence, the potential for a large voltage spike across the main
switch is alleviated and the efficiency is improved
TOOLS AND SOFTWARE USED:
 MP LAB
 ORCAD/PSPICE
 MATLAB/SIMULINK
OUTPUT:
 HARDWARE
 SIMULATION
REFERENCE:
Kuo-Ching Tseng, Chi-Chih Huang and Chun-An Cheng, Member, IEEE, “A High
Step-Up Converter with Voltage-Multiplier Modules for Sustainable Energy
Applications”, IEEE Journal of Emerging and Selected Topics in Power
Electronics, 2015.