A High Step-Up DC to DC Converter Under Alternating Phase Shift Control for Fuel Cell Power System

  • September 8, 2015
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A High Step-Up DC to DC Converter Under Alternating Phase Shift Control for Fuel Cell Power System

 

ABSTRACT

This paper investigates a novel pulse width modulation (PWM) scheme for two-phase interleaved boost converter with voltage multiplier for fuel cell power system by combining alternating phase shift (APS) control and traditional interleaving PWM control. The APS control is used to reduce the voltage stress on switches in light load while the traditional interleaving control is used to keep better performance in heavy load. The boundary condition for swapping between APS and traditional interleaving PWM control is derived.

CIRCUIT DIAGRAM

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EXISTING SYSTEM:

High step-up ratio can be achieved by combining classical boost converter with switched inductors, coupled inductors, high-frequency transformer, or switched capacitor. They can obtain high step-up ratio with high efficiency, low-voltage stress, and low electromagnetic interference.

In order to reduce output fuel cell stack output current ripple or the dc/dc converter input current ripple, either a passive filter or active filter can be used, however, this will increase the complexity of the system. In fact, interleaving the dc/dc converter can reduce the input current ripple of the dc/dc converter

PROPOSED SYSTEM:

This project investigates a novel PWM scheme for two-phase interleaved boost converter with voltage multiplier for fuel cell power system by combining APS and traditional interleaving PWM control. The APS control is used to reduce the voltage stress on switches in light load while the traditional interleaving control is used to keep better performance in heavy load.

The boundary condition for swapping between APS and traditional interleaving PWM control is derived. Based on the aforementioned analysis, a full power range control combining APS and traditional interleaving control is proposed. Loss breakdown analysis is also given to explore the efficiency of the converter. Finally, it is verified by experimental results.

TOOLS AND SOFTWARE USED:

  • MP LAB
  • ORCAD/PSPICE
  • MATLAB/SIMULINK

 

OUTPUT:

  • HARDWARE
  • SIMULATION

 

REFERENCE:

Longlong Zhang, Member, IEEE, Dehong Xu, Fellow, IEEE, Guoqiao Shen, Member, IEEE, Min Chen, Member, IEEE, Adrain Ioinovici, Fellow, IEEE, and Xiaotian Wu, “A High Step-Up DC to DC Converter Under Alternating Phase Shift Control for Fuel Cell Power System”, IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 30, NO. 3, MARCH 2015

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