A Novel Process for the Design, Analysis, and Control of a Dual-Phase Motors with Independent Drive for a High Power Density

• DOI: 10.3390/pr13040930
• Publication Date: 2025-03-21T13:09:07Z
• Authors: Hyung-Sub Han; Si-Woo Song; Seung-Heon Lee; Su-Bin Jeon; Won-Ho Kim

This paper proposes a design and control process for a dual-phase motors (DPM) aimed at independent drive. To achieve independent drive, different pole numbers are used for the inner rotor and outer rotor of the dual-rotor motors (DRM). Additionally, a special winding method is selected to allow the inner rotor and outer rotor to operate independently on a single stator. Through this winding method, only the rotor linked to the current is driven. The motor uses a combined current synthesized from 3-phase and 6-phase currents, and so the current ratio and period based on electrical frequency are determined. By selecting the current ratio, a current similar to the phase voltage waveform is formed to find the optimal output point, which is then formalized. Furthermore, by redefining the period, the inner rotor and outer rotor are analyzed separately within the complex waveform. Subsequently, the motor’s T-N curve characteristics are analyzed through voltage/current limit circles, and the control method is explained to present the overall process of the DPM.