MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202541133606 A) filed by Tummala Suresh Kumar; and Anurag Engineering College, Hyderabad, Telangana, on Dec. 30, 2025, for 'performance analysis of an asymmetrical cross switched cascade multilevel inverter.'

Inventor(s) include S. Yasoda Krishna; Dr. R. Durga Rao; and Mogarapu Anil Kumar.

The application for the patent was published on Jan. 9, under issue no. 02/2026.

According to the abstract released by the Intellectual Property India: "The performance analysis of a 49-level Asymmetrical Cross-Switched Cascade Multilevel Inverter topology intended for high-power induction motor drives is presented in this work. To achieve high resolution, conventional symmetrical multilevel inverters need a lot of DC sources and power switches, which raises the complexity and cost of the system. This study suggests an asymmetrical DC source arrangement that makes use of a particular voltage ratio inside the cross-switched modules in order to overcome these constraints. Compared to conventional Cascaded H-Bridge topologies, this method dramatically increases the number of output voltage levels to 49 while using fewer components. A near-sinusoidal 49-level staircase waveform is produced using a specific switching technique, which naturally reduces the Total Harmonic Distortion (THD) without requiring large output filters."

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