TY - GEN
T1 - Error Tolerance Analysis for SHE-PWM Calculation in a 3L-NPC Converter
AU - Ibanez-Hidalgo, Irati
AU - Sanchez-Ruiz, Alain
AU - Perez-Basante, Angel
AU - Ceballos, Salvador
AU - Zubizarreta, Asier
AU - Li, Yunwei
AU - Quan, Zhongyi
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/10/13
Y1 - 2021/10/13
N2 - Medium-voltage high-power converters are usually modulated using low switching frequency techniques such as Selective Harmonic Elimination-Pulse Width Modulation (SHE-PWM) in order to improve their efficiency. To calculate the firing angles, SHE-PWM transcendental equations are usually solved by offline calculation methods, whose computational burden depends on the number of firing angles or eliminated harmonics and the required accuracy in the solutions. Consequently, with the aim of reducing this computational burden, this paper presents an analysis that estimates the maximum accuracy required in the calculated SHE-PWM solutions considering the main non-idealities of the converter. In this sense, a systematic methodology to evaluate the error in the harmonic amplitudes due to control and dead time effects has been developed, providing an optimal error tolerance for the calculation methods that solve the SHE-PWM problem.
AB - Medium-voltage high-power converters are usually modulated using low switching frequency techniques such as Selective Harmonic Elimination-Pulse Width Modulation (SHE-PWM) in order to improve their efficiency. To calculate the firing angles, SHE-PWM transcendental equations are usually solved by offline calculation methods, whose computational burden depends on the number of firing angles or eliminated harmonics and the required accuracy in the solutions. Consequently, with the aim of reducing this computational burden, this paper presents an analysis that estimates the maximum accuracy required in the calculated SHE-PWM solutions considering the main non-idealities of the converter. In this sense, a systematic methodology to evaluate the error in the harmonic amplitudes due to control and dead time effects has been developed, providing an optimal error tolerance for the calculation methods that solve the SHE-PWM problem.
KW - computational burden
KW - converter control
KW - dead time
KW - error tolerance
KW - non-idealities
KW - SHE-PWM
UR - http://www.scopus.com/inward/record.url?scp=85119500606&partnerID=8YFLogxK
U2 - 10.1109/IECON48115.2021.9589822
DO - 10.1109/IECON48115.2021.9589822
M3 - Conference contribution
AN - SCOPUS:85119500606
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 47th Annual Conference of the IEEE Industrial Electronics Society, IECON 2021
Y2 - 13 October 2021 through 16 October 2021
ER -