Ha-Rang Jo, Ye-Ji Kim, and Kyo-Beum Lee, "LCL-Filter Design Based on Modulation Index for Grid-Connected Three-Level Hybrid ANPC Inverters," Journal of Electrical Engineering & Technology, in press. -SCIE > Paper

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International Journals Ha-Rang Jo, Ye-Ji Kim, and Kyo-Beum Lee, "LCL-Filter Design Based on Modulation Index for Grid-Connected Three-Level Hybrid ANPC Inverters," Journal of Electrical Engineering & Technology, in press. -SCIE

2021

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This paper proposes an LCL-filter design based on the modulation index for grid-connected hybrid active neutral point clamped (ANPC) inverters. The

three-level hybrid ANPC inverter consists of silicon insulated gate bipolar transistors and silicon carbide metal oxide semiconductor field effect

transistors to reduce the switching losses. LCL-filter parameters for the three-level hybrid ANPC inverter are calculated using the current ripple factor.

The current ripple factor is affected by phase voltage, which varies according to the modulation index, and therefore the inductance on the inverter

side must be considered with the modulation index. To design inductance on the inverter side, the output phase voltage and grid voltage are used to analyze the current ripple factor. The filter capacitor and the inductance on the grid side are designed based on the reactive power absorption and

current ripple attenuation. The effectiveness of the proposed LCL-filter design method is validated via simulation and experimental results.

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