TY - GEN
T1 - Fundamental switching frequency pulse width modulation of nine-level current-fed multilevel converter for solar application
AU - Gnanasambandam, K.
AU - Rathore, Akshay K.
AU - Srinivasan, Dipti
AU - Rodriguez, Jose
PY - 2019/5/24
Y1 - 2019/5/24
N2 - The aim of this paper is to develop a real-time computational method that determines switching angles of selective harmonic elimination (SHE) for operating nine-level (9L) current-fed multilevel converter(MLC). The computation algorithm for SHE conventionally requires huge calculation time to identify switching angles of the inverter and hence a truth table based modulation is applied for operating the converter in real-time. To overcome this, a new analytical method has been proposed in this paper that minimizes the computation time to calculate the switching angles. However, these switching angles cannot be directly applied to current-fed MLCs. Unlike voltage fed converters, the current-fed converters have additional operational constraints on the modulation technique. Hence in this paper, a conversion technique has been utilized to convert the un-constraint SHE angles into constraint angles in order to operate current-fed MLCs. A low power prototype of 9L current source inverter has been set-up to experiment and validate the proposed real-time calculation method at the fundamental frequency of 50Hz.
AB - The aim of this paper is to develop a real-time computational method that determines switching angles of selective harmonic elimination (SHE) for operating nine-level (9L) current-fed multilevel converter(MLC). The computation algorithm for SHE conventionally requires huge calculation time to identify switching angles of the inverter and hence a truth table based modulation is applied for operating the converter in real-time. To overcome this, a new analytical method has been proposed in this paper that minimizes the computation time to calculate the switching angles. However, these switching angles cannot be directly applied to current-fed MLCs. Unlike voltage fed converters, the current-fed converters have additional operational constraints on the modulation technique. Hence in this paper, a conversion technique has been utilized to convert the un-constraint SHE angles into constraint angles in order to operate current-fed MLCs. A low power prototype of 9L current source inverter has been set-up to experiment and validate the proposed real-time calculation method at the fundamental frequency of 50Hz.
KW - Current source inverter
KW - Multilevel inverters
KW - Selective harmonic elimination
KW - Solar power integration
UR - http://www.scopus.com/inward/record.url?scp=85067111499&partnerID=8YFLogxK
U2 - 10.1109/APEC.2019.8722260
DO - 10.1109/APEC.2019.8722260
M3 - Conference contribution
AN - SCOPUS:85067111499
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 154
EP - 160
BT - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Y2 - 17 March 2019 through 21 March 2019
ER -