Pi Controlled DC-DC Converter Based on Three-State Switching Cell

**Citation**

Sithara Azeez, Sajini Susan Mathai"Pi Controlled DC-DC Converter Based on Three-State Switching Cell", International Journal of Engineering Trends and Technology (IJETT), V29(4),196-203 November 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

**Abstract**

This paper introduces a new family of
PWM DC-DC non-isolated converters By
substituting the converter-cell all the DC-DC
converter topologies (the buck configuration) is
obtained. The new converters are generated using
three-state commutation cells. Comprising two
active switches, two diodes and coupled inductors.
This topology has 3 switching stages, thus the name
given as three state switching cell. In these circuits
only part of load power is transferred by the
switches so switching stress is less and high power
output can be attained. Advantages of this topology
are less size and volume of components, wide area of
continuous conduction mode, low conduction and
commutation losses, and low input and output
current ripple. Due to these features, the new
converters are suitable for low voltage and high
current application. Step down converter have
overlapping and non-overlapping modes. When duty
ratio is less than 0.5, we can achieve nonoverlapping
and continuous conduction mode.
Simulations of the existing converter are done in
MATALAB/SIMULINK and an experimental
prototype was implemented.

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**Keywords**

Buck Converter, Boost Converter,
DC-DC Converters, Three State Switching Cell
(3SSC).