MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202641125850 A) filed by Srm University-Ap on October 22, 2026, for Frequency-Scaled Decoupled Control System And Method For Non-Minimum-Phase Magnetically Coupled Dual-Input Dual-Output Dc-Dc Boost Converters.
Inventors include Vijayasri Averneni; Parthasarathi Reddy Devalapalli; Arghya Chakravarty; Tousif Khan N.; Rv Satya Saivalli Vaddiparthi; and Sai Teja Tummuri.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: The present invention relates to a frequency-scaled decoupled control system for a non-minimum-phase magnetically coupled dual-input dual-output (DIDO) DC-DC boost converter. The method comprises determining multivariable transfer dynamics of the converter and generating cross-decoupling transfer functions for reducing cross-coupling between first and second output ports. The transfer functions are generated by inverting only minimum-phase dynamics while excluding non-minimum- phase dynamics associated with at least one right-half-plane (RHP) zero from inversion or compensation. A frequency-dependent inter-port interaction and a limiting RHP-zero frequency are determined. A maximum allowable decoupling bandwidth is analytically determined based on a prescribed controller crossover frequency, the inter-port interaction quantity, and the limiting RHP-zero frequency. A low-pass filter cutoff frequency is constrained by the maximum allowable decoupling bandwidth to provide finite-band cross-decoupling while progressively attenuating cross-decoupling before a non-minimum-phase frequency region, thereby reducing cross- regulation while maintaining stable output-voltage regulation Figure of Abstract – Fig. 1
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