Interleaved operation of three-level neutral point clamped converter legs and reduction of circulating currents under SHE-PWM
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Cita com:
hdl:2117/90948
Tipus de documentArticle
Data publicació2016-06
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condicions d'accésAccés obert
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Abstract
Interleaving of voltage-source converter
(VSC) legs enables higher output currents per phase,
effectively increasing the power rating without increasing
semiconductor ratings. However, the interleaved operation
results in circulating currents between each phase converter
legs as well as a zero-sequence circulating current
(ZSCC), which become quite prominent when the converters
operate with low switching frequencies. This paper
demonstrates the interleaved operation of three-level converters
under selective harmonic elimination pulsewidth
modulation (SHE-PWM). A controller for the circulating
current within the legs of each phase is also proposed. The
controller is used in combination with optimally selected
SHE-PWM patterns to generate the maximum number of
voltage levels and minimize the peak value of the circulating
current. Simulation and experimental results show the
interleaved operation and the effect of SHE-PWM pattern
selection in the overall system.
CitacióCapella, G., Pou, J., Konstantinou, G. Interleaved operation of three-level neutral point clamped converter legs and reduction of circulating currents under SHE-PWM. "IEEE transactions on industrial electronics", Juny 2016, vol. 63, núm. 6, p. 3323-3332.
ISSN0278-0046
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TIE_SHE_Interleaved_r1_v4.pdf | 1,744Mb | Visualitza/Obre |