Design and Analysis of Halbach Array PM Inner Rotor Slotted Stator Compensated Pulsed Alternator

Abstract

Compensated pulsed alternator (CPA) as an inertial energy storage pulsed power supply integrates the functions of flywheel inertial energy storage, electromechanical energy conversion, and pulsed discharge, and has many advantages such as high energy storage density, large power density, and small size. A new type of Halbach array permanent magnet (PM) inner rotor slotted stator passively CPA (SSPCPA) is proposed in this article; then, the scheme for the integration of the motor with SSPCPA is presented; next, the design processes for both the rotor and stator sides are given to determine the main structural size parameters of SSPCPA. Following this, the impedance of the armature winding of SSPCPA is calculated, and mathematical models are established for both single-phase discharge and two-phase rectified parallel discharge under load conditions. Subsequently, using Maxwell and Simplorer software, a simulation analysis is conducted for discharge with 1 m $\Omega $ and $1~\mu $ H loads. Finally, the simulation results demonstrate that the design of SSPCPA can achieve the predetermined pulsed discharge performance.