TY - JOUR
T1 - High-frequency link inverter for fuel cells based on multiple-carrier PWM
AU - Krein, Philip T.
AU - Balog, Robert S.
AU - Geng, Xin
N1 - Funding Information:
Manuscript received July 1, 2003; revised June 1, 2004. This work was supported in part by the Grainger Center for Electric Machinery and Electromechanics and National Science Foundation Grant ECS-02-24829. Recommended by Associate Editor F. Z. Peng.
PY - 2004/9
Y1 - 2004/9
N2 - Fuel-cell inverter applications typically have a relatively low voltage input, and require a battery bus for energy buffering. Circuit topology issues are examined based on these needs. The need for high step-up ratios, current control, low ripple, and battery storage leads to a current-sourced link converter as perhaps the best choice of conversion topology. High-frequency ac link conversion offers a possible way to reduce the number of power stages, in the form of a cycloconverter, known from previous work. It is shown that the control complexity in this converter can be addressed by adapting pulse-width modulation (PWM) techniques. Here, a multicarrier PWM approach is introduced as a convenient way to implement a high-frequency link inverter. The approach is a direct extension of conventional PWM, and supports square-wave cycloconversion methods that have appeared in prior literature. Simulation and experimental results are developed for a low-voltage ac link inverter, leading to a 48-V fuel cell input design.
AB - Fuel-cell inverter applications typically have a relatively low voltage input, and require a battery bus for energy buffering. Circuit topology issues are examined based on these needs. The need for high step-up ratios, current control, low ripple, and battery storage leads to a current-sourced link converter as perhaps the best choice of conversion topology. High-frequency ac link conversion offers a possible way to reduce the number of power stages, in the form of a cycloconverter, known from previous work. It is shown that the control complexity in this converter can be addressed by adapting pulse-width modulation (PWM) techniques. Here, a multicarrier PWM approach is introduced as a convenient way to implement a high-frequency link inverter. The approach is a direct extension of conventional PWM, and supports square-wave cycloconversion methods that have appeared in prior literature. Simulation and experimental results are developed for a low-voltage ac link inverter, leading to a 48-V fuel cell input design.
UR - http://www.scopus.com/inward/record.url?scp=4544377193&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4544377193&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2004.833996
DO - 10.1109/TPEL.2004.833996
M3 - Article
AN - SCOPUS:4544377193
SN - 0885-8993
VL - 19
SP - 1279
EP - 1288
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 5
ER -