Modified Control for Single-Phase Fuel Cell Systems with Input Ripple Compensation and Improved Output Quality

Fuel cells serve as a clean, renewable and efficient source of electrical energy. The power conditioning system associated with their applications consist of a DC-DC converter stage and a DC-AC inverter stage. In a single-phase fuel cell system, the single-phase inverter introduces a second harmonic component in the current drawn from the fuel cell source. This low-frequency current ripple has been found to be detrimental to the performance, lifespan, and efficiency of the fuel cell, if not adequately controlled. This thesis presents a current control method for the DC-DC converter stage that reduces the input current ripple drawn from the source in the single-phase fuel cell system. A modified inverter control is proposed to improve the system output quality. Simulations are carried out using MATLAB; the results compared with the conventional method. To validate the proposed approach, experimental results from a laboratory prototype are presented. The proposed method uses a Digital Signal Processor for control system monitoring and control.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Houston

Year dc:date.issued

2017

Author dc:creator

• Sinha, Soumya

Advisor dc:contributor.advisor

• Shireen, Wajiha

Committee members dc:contributor.committeemember

• Rajashekara, Kaushik
• Fu, Xin

• Power electronics
• Fuel cell
• Second harmonic current
• DC-DC boost converter
• Single-phase
• Inverters

Statement dc:rights

• The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/10657/2781

OAI identifier oai:identifier

oai:uh-ir.tdl.org:10657/2781