Cascaded H-Bridges Multilevel Inverter Drive: Active Power Analysis in Frequency Domain

Claudio Nevoloso, Ciro Spataro, Rosario Miceli, Antonino Oscar Di Tommaso, Gioacchino Scaglione, Giuseppe Schettino

Abstract

The international standard IEC 61800-9-2 introduces energy efficiency classification for frequency converters or complete drive module (CDM) and provides instrumentation minimum requirements for accurate measurement of CDM input and output power valid for conventional pulse-width-modulated (PWM) voltage source inverter (VSI). This paper highlights the necessary improvements to update the standard with more detailed prescriptions according to the converter topologies and the modulation techniques adopted. In this framework, this paper address the power analysis in the frequency domain of a cascaded H-bridges-multilevel inverter (CHBMI) in an interior permanent magnet synchronous motor (IPMSM) drive for the identification of the minimum measurement bandwidth. The power spectrums are analyzed for different modulation strategies, different switching frequency values and IPMSM working conditions.

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IMEKO-TC4-2022-50.pdf

DOI

10.21014/tc4-2022.50

IMEKO TC

TC4 - Measurement of Electrical Quantities

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