Online Collaborative Optimization of Two-Step Commutation Parameters for Dc-Link Voltage Ripple Minimization in Srg
Year: 2026
Type: conference-paper
Abstract: Two-step commutation strategies incorporating a zero-voltage loop can improve the voltage quality of switched reluctance generators (SRGs) in high-speed single-pulse mode. However, no online mechanism exists for coordinating multiple control parameters, limiting adaptability to complex and dynamic operating conditions. To address this gap, the DC-link capacitor current is reconstructed by real-time sampling of the three-phase currents and the load current, followed by normalization. Exploiting the characteristic behavior of the capacitor current under optimal control parameters, a low-computation-cost optimization law is derived. This law enables real-time adaptive coordination of both the turn-on angle and the freewheeling angle. The proposed method is validated through simulations and experiments on a three-phase 12/8-pole SRG platform. Compared with conventional single-step commutation, the proposed method substantially reduces DC-link voltage ripple and capacitor RMS current while preserving DC-link voltage stability.
Institution: Nanjing University of Aeronautics and Astronautics
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7224913535