Design, Simulation, and Fabrication of a Hybrid Excitation Compulsator

We present the detailed design, simulation, and fabrication of a hybrid excitation passive compensated pulsed alternator (HEPCPA). The HEPCPA design offers long-lifetime stable operation over a broad range of operating conditions. The stator uses a two-winding design. A slotless armature winding is epoxy bonded on the inner ring of the stator core, and the electrical-excitation winding is embedded in the middle slot of the stator core. The second electrical-excitation winding is used to expand the acceptable range of operating conditions. We explore the magnetic flux density distributions under permanent-magnetic excitation. In addition, we examine two types of electrical excitation. We then calculate the eddy current density distribution in the compensation shield. We discuss conditions for the safe operation of the permanent magnet. We present fabrication techniques for the slotless armature winding. We discuss our experimental results showing enhanced magnetic and electrical field activity. The experimental results show agreement with the simulation.