Review Article
Volume 7 Issue 1 - 2020
Design, Development, FEM Analysis of Hybrid 12/14 BSRM for Saispandan- Bearing-Less Magnetic Indian Total Artificial Heart for Destination Therapy (DT)
Pradeep Kumar Radhakrishnan1*, Sujatha Mohanty2, Pulivarthi Nageshwar Rao1, Siva Krishna Rao GV1, Nagesh Kumar1, Bisoi AK2, Siva Prasad1, Satya Narayana Murthy1, Satya Narayana MRS1, Ravi Shankar1, Srinivas1, Das PK3, Valluvan Jeevanandam4 and Venugopal P2
1Gitam University, India
2AIIMS, India
3IIT Kharagpur, India
4University of Chicago, USA
*Corresponding Author: Pradeep Kumar Radhakrishnan, Gitam University, India.
Received: December 09, 2019; Published: December 23, 2019




Abstract

Rotor vibration control during start-up, acceleration and deceleration phases are one of the key problems besides stable levitation, in high-speed applications of bearing less switched reluctance motor (BSRM) [1-3]. Global sliding mode controller (GSMC) is proposed to control the speed and position of BSRM. Sensor less operation is achieved with sliding mode observer. Rotor displacement tracking error functions were used in the sliding mode switching functions. New sliding mode displacement control and speed tracking equations obtained using extra exponential fast decaying nonlinear function and conventional linear sliding mode switching. Simulation is carried on hybrid 12/14 BSRM with the proposed controller and observer. 12 stator poles and 14 rotor poles were selected. Pole arc was 25.71. FEM analysis showed Torque pole arc was 12.85. Air gap length was 0.25 - 0.5 mm. Stator diameters -112/60.2, stator yoke thickness 7.7 mm, shaft diameter of 18 mm, coil width of 4 mm, rotor pole arc of 12.85, axial stack length of 40 mm, rotor yoke thickness of 9.7 mm-were the major design parameters. FEM of motor parameters under different loads for speed, torque load, switching angle, voltage, phase resistance and moment of inertia was performed. Separated single winding, wide suspending force region, higher power density, natural decoupling of torque from suspending force, low magnetic motive force, low core cost of hybrid 12/14 BSRM makes it ideal as motor for total artificial heart as destination therapy.

Keywords: Bearing Less Switched Reluctance Motor (BSRM); Global Sliding Mode Controller (GSMC); FEM Analysis; Destination Therapy (DT)

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Citation: Pradeep Kumar Radhakrishnan., et al. “Design, Development, FEM Analysis of Hybrid 12/14 BSRM for Saispandan- Bearing-Less Magnetic Indian Total Artificial Heart for Destination Therapy (DT)”. EC Cardiology 7.1 (2020): 01-06.

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