The Study on the Influence of Counter-Rotational Motion of Dual Rotors on Induced Electromotive Force
Abstract
This research confronts the efficiency constraints inherent in traditional single-rotor generators by introducing a novel dual-rotor architecture based on counter-rotating mechanics. The proposed design fundamentally rethinks electromagnetic induction by engineering the internal and external rotors to spin in opposite directions. This Stanley's Rotation Movement (SRM) principle aims to maximize the relative angular velocity between magnetic fields and conductors, thereby directly amplifying the rate of change in magnetic flux linkage and the resulting induced electromotive force (EMF).
The experimental phase involved a systematic comparative analysis of four generator prototypes: a baseline single-rotor (CG) model and three dual-rotor variants (11SG, 22SG, 33SG) with differing gear ratios. Testing was conducted in a controlled large-scale wind tunnel environment to ensure consistent input conditions. The data revealed a significant and repeatable ""Excessive Gain"" effect, where the dual-rotor systems consistently produced EMF outputs that surpassed predictions from classical linear models. Notably, the 11SG configuration generated an EMF up to 2.78 times greater than the CG model under identical drive-shaft speeds. This stable, non-linear augmentation in performance is formally identified as the ""Stanley Effect.""
To elucidate the physics behind this phenomenon, the study moves beyond the standard linear formulation of Faraday's Law. It constructs a pioneering mathematical model inspired by the logarithmic scaling principles of the Weber-Fechner Law, expressed as
This model accurately captures the observed exponential relationship between EMF gain and the relative motion parameter nn. Complementary high-fidelity simulations using the Altair Flux multiphysics platform provided robust validation. These simulations not only confirmed the electromagnetic basis of the effect but also delineated its operational boundary by illustrating how magnetic circuit saturation moderates gain at extreme rotational speeds.
The demonstrated SRM mechanism presents a viable pathway toward higher energy conversion efficiency within a compact and potentially modular form factor. Its practical advantages suggest strong applicability for upgrading existing power generation systems in wind, hydro, and thermal energy sectors, as well as for developing efficient on-board power solutions for next-generation electric vehicles. This work establishes a foundational innovation for advancing high-performance generator technology, offering a tangible contribution to sustainable energy engineering.