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\begin{document}

\title{Performance Study of High-Speed Homopolar Inductor Alternator}



\author[1]{Vijayasree G.}%
\author[1]{Mini V. P}%
\author[1]{S. Ushakumari}%
\affil[1]{College of Engineering Trivandrum}%


\vspace{-1em}



  
  \date{May 28, 2024}


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\begin{abstract}
Recently hydraulic and mechanical-based aircraft systems are replaced by
electrical-based 'on board aircraft systems' because of their various
advantages like less volume and weight, and reliability. So electrical
power system architecture needs to be modified. In spacecraft, a major
volume is utilised for the electrical subsystem. The main requirements
of the electrical power system of spacecraft are better reliability,
less volume and weight, and improved power efficiency. Separate
power-generating sources are used for propulsion and various auxiliary
systems. Solar-based generation, nuclear-based generation, and fuel
cells are some electrical energy sources used in aircraft. More reliable
power generation techniques are required for long-duration space
missions. The multiphase alternator is a better choice for reliable
power generation. Another constraining factor for space power systems is
volume and weight because of less space availability in the aircraft.
Considering these constraining factors very high power density
alternators are suitable for space power systems. Hence, High-Speed Homo
Polar Inductor Alternator (HSHIA) is the most suitable candidate.
High-speed operation up to 1 lakh RPM is possible with this machine due
to its better power density and the special structure of the rotor. This
machine already finds application in pulse charging as well as for
energy storage by NASA and certain defense organizations. For studying
its suitability for auxiliary power generation, a performance analysis
is to be carried out. In HSHIA the performance is classified into three
levels such as magnetic, electrical, and thermal. This paper presents
the electrical performance analysis of HSHIA with different load
conditions using the 3 -D Finite Element Method.%
\end{abstract}%



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