Investigation of enhancing efficiency and acceleration in a flat shape axial gap motor having high torque characteristic. - Ren Tsunata; Masatsugu Takemoto; Satoshi Ogasawara; Asako Watanabe; Tomoyuki Ueno; Koji Yamada (ICM, 2017)

A Proposal of Ultra-Flat Axial Gap Motor Employing C-type SMC Core. - Ren Tsunata; Masatsugu Takemoto; Satoshi Ogasawara; Tomoyuki Ueno; Tatsuya Saitoh (IECON, 2019)

Examination of the Characteristics of a Hybrid Excitation Motor with Field Winding on a Rotor for Electric Vehicle and Hybrid Vehicle Traction. - Ryusyo Nakazawa; Masatsugu Takemoto; Satoshi Ogasawara; Ren Tsunata; Koji Orikawa (IECON, 2022)

Dividing Repulsion Permanent Magnets for Enhancing Suspension Force Characteristics in a 1-axis Active Control Type Magnetic Levitation Pump. - Koki Terada; Masatsugu Takemoto; Ren Tsunata; Jun Imai (IECON, 2022)

Novel Rotor Structure Employing Large Flux Barrier and Disproportional Airgap for Enhancing Efficiency of IPMSM Adopting Concentrated Winding Structure. - Xianji Tao; Masatsugu Takemoto; Ren Tsunata; Satoshi Ogasawara (IEEE Access, 2023)

Reduction in Eddy Current Loss of Special Rectangular Windings in High-Torque IPMSM Used for Wind Generator. - Xianji Tao; Masatsugu Takemoto; Ren Tsunata; Satoshi Ogasawara (IEEE Access, 2023)

A Proposal of an Axial-Flux Permanent-Magnet Machine Employing SMC Core With Tooth-Tips Constructed by One-Pressing Process: Improving Torque and Manufacturability. - Ren Tsunata; Masatsugu Takemoto; Jun Imai; Tatsuya Saito; Tomoyuki Ueno (IEEE Access, 2023)

Design and Analysis of Hybrid-Excitation Variable Flux Memory Motor for Traction Applications: Improving Output Power in High-Speed Area During Six-Step Operation Mode. - Ren Tsunata; Keito Yokomichi; Masatsugu Takemoto; Jun Imai (IEEE Access, 2023)

Basic Investigation of an IPMSM Employing Rotor Skew For Enhancing Output Power Under Field Weakening Control. - Yu Ichimura; Ren Tsunata; Masatsugu Takemoto; Jun Imai (IECON, 2024)

Investigation Into Suitable Number of Stator Slots of MW Class SPMSM Considering Laminated Rotor in Hybrid Propulsion System of Aircraft. - Takuya Moriki; Ren Tsunata; Masatsugu Takemoto; Jun Imai; Takehiro Jikumaru; Tomoya Yamamoto (ICM, 2025)