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A new active neutral point clamped (ANPC) nine-level inverter topology with low energy storage switched capacitorsZuhair AlaasThe ANPC-based multilevel inverters have been quite famous for over a decade due to their lower devices and high ef f i ciency. However, as the number of levels increases, the ANPC topologies become unsuitable due to the increase in the component count and capacitor voltage balancing issue. This article proposes a novel ANPC nine-level topology with reduced components and voltage stress on the components. The proposed circuit has eight switches and one bidirectional switch, with two switched capacitors. The proposed topology has the voltage boosting ability with a maximum voltage gain of two times that of the conventional ANPC topologies. Further, the proposed topology does not need any voltage-balancing algorithm to maintain the SC voltages. The proposed topology is validated in hardware, and results are presented. The maximum voltage is 200 V, and the maximum current is 2.4 A with a maximum ef f i ciency of 97% 100 W.Keywords Multilevel inverter, Switched capacitor cell, Self-voltage boosting, Capacitor voltage balancing, High step-up inverter.Multilevel inverters (MLIs) are predominated and well-matured power converters ideal for medium—and high-voltage applications such as high-power AC drives, fl exible AC transmission systems (FACTS), high-voltage direct current (HVDC) transmission, and large-scale renewable energy systems (RESs) 1,2 . In contrast to conventional two-level inverters, MLIs provide a range of signif i cant advantages. Th ey substantially reduce voltage stress on power devices, enhancing these components’ reliability and operational lifespan and improving overall system performance. Additionally, MLIs ef f ectively minimize electromagnetic interference (EMI), ensuring cleaner signals and reducing noise in sensitive applications. Moreover, MLIs achieve lower total harmonic distortion (THD), resulting in a higher-quality output waveform, thus improving power delivery ef f i ciency. Th ey also help reduce the common-mode voltage, which is crucial for preventing potential issues related to system stability and equipment protection 3,4 . Th ese features make MLIs particularly advantageous in modern electrical systems, where the demand for ef f i ciency, power quality (PQ), and robust performance is increasingly critical. Th eir ability to manage higher voltage levels with fewer components contributes to cost-ef f ectiveness. It supports the advancement of power electronics technology, positioning MLIs as key players in the future of energy systems.T h e fi rst cascaded H-bridge multilevel inverter (MLI) was introduced in 1975 and developed by Baker et al. Th is pioneering work laid the foundation for subsequent advancements in the fi eld. Two additional MLI topologies—the neutral point clamped (NPC) and fl ying capacitor (FC) conf i gurations—were introduced the following year, marking signif i cant milestones in power electronics and power system-based power electronic applications.While conventional MLI topologies are recognized for their excellent modularity and reduced voltage stress on switches, they inherently require many components. Th ese include switches, clamping diodes, isolated DC sources, and DC-link capacitors 5 . Th e increased component count leads to higher costs and larger system sizes and weights, posing challenges in practical applications. Innovative hybrid multilevel inverters have been developed to mitigate these drawbacks without compromising the advantageous features of traditional MLIs. Th ese hybrids ef f ectively combine elements from both conventional and contemporary topologies, emerging as viable solutions to the limitations inherent in earlier designs. Among these, the active neutral point clamped (ANPC), and FC hybrid topologies have garnered signif i cant attention within the research community. However, it is important to note that these hybrid topologies of t en rely on complex algorithms for managing FC voltages. Department of Electrical and Electronics Engineering, Faculty of Engineering and Computer Science, Jazan University, Jizan 45142, Saudi Arabia. email: zalaas@jazanu.edu.saOPENScientif i c Reports | (2025) 15:7031 1 | https://doi.org/10.1038/s41598-025-87302-2www.nature.com/scientificreports