Article: A novel 11-level active boost neutral point clamped inverter based on switched-capacitor units' integration Journal: International Journal of Power Electronics (IJPELEC) 2025 Vol.21 No.3 pp.279 - 314 Abstract: This paper introduces a novel boost 11-level type active neutral point clamped (ANPC) inverter aggregated with switched-capacitor (SC) units. This topology comprises 12 switches, four DC-link/floating capacitors, and a single fixed DC source. Traditional ANPC topologies present a low voltage gain and a low number of output voltage levels leading to an increase in the device count. In this work, in addition to the boosting feature (as much as 2.5Vdc), a high number of voltage level (11) is also achieved. The proposed structure does not use the back-end H-bridge (BEHB) unit. For this reason, the maximum blocking voltage (MBV) value across the switches is restricted to only 2Vdc. The floating capacitors placed in the SC unit are guaranteed to be charged at each half-cycle of the fundamental frequency to mitigate the capacitor voltage ripples aligned with the current spikes. To ensure the correct operation of the suggested structure, several simulations and experimental results are accomplished by MATLAB and Arduino Due-based ARM cortex-M3 core, respectively, under the nearest level control (NLC) switching technique, various impedance loads, and variations in modulation index. Inderscience Publishers - linking academia, business and industry through research

Title: A novel 11-level active boost neutral point clamped inverter based on switched-capacitor units' integration

Authors: Seyed Jafar Salehi; Seyed Mostafa Ghadami; Mohammad Akbari-Farmanbar; Yaser Habibi; Amard Afzalain

Addresses: Department of Electrical Engineering, University of Birjand, Birjand, Iran ' Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran ' Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran ' Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran ' Department of Electrical Engineering, Ramsar Branch, Islamic Azad University, Ramsar, Iran

Abstract: This paper introduces a novel boost 11-level type active neutral point clamped (ANPC) inverter aggregated with switched-capacitor (SC) units. This topology comprises 12 switches, four DC-link/floating capacitors, and a single fixed DC source. Traditional ANPC topologies present a low voltage gain and a low number of output voltage levels leading to an increase in the device count. In this work, in addition to the boosting feature (as much as 2.5V_dc), a high number of voltage level (11) is also achieved. The proposed structure does not use the back-end H-bridge (BEHB) unit. For this reason, the maximum blocking voltage (MBV) value across the switches is restricted to only 2V_dc. The floating capacitors placed in the SC unit are guaranteed to be charged at each half-cycle of the fundamental frequency to mitigate the capacitor voltage ripples aligned with the current spikes. To ensure the correct operation of the suggested structure, several simulations and experimental results are accomplished by MATLAB and Arduino Due-based ARM cortex-M3 core, respectively, under the nearest level control (NLC) switching technique, various impedance loads, and variations in modulation index.

Keywords: multilevel inverter; active neutral point clamped; ANPC; voltage-boosting; switched-capacitor; nearest level control.

DOI: 10.1504/IJPELEC.2025.145954

International Journal of Power Electronics, 2025 Vol.21 No.3, pp.279 - 314

Received: 02 Sep 2024
Accepted: 27 Dec 2024
Published online: 30 Apr 2025 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: A novel 11-level active boost neutral point clamped inverter based on switched-capacitor units' integration

Keep up-to-date