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Accessible power for medical equipment in remote healthcare: a solution for single-phase power generation using three-phase induction machines
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Orientador(es)
Resumo(s)
This work was motivated by the urgent need for reliable electricity in remote areas where conventional power distribution, and consequently access to healthcare, remains impractical. The proposed system is a practical alternative to conventional synchronous generators commonly used in off-grid applications, which have high implementation and maintenance costs and potential risks in healthcare applications due to the spark generated by the brushes. We propose the use of a self-excited single-phase generator, derived from a three-phase induction machine, as a robust, low-cost, highly reliable and safe solution for supplying electrical power to medical applications in remote locations. The work presents a mathematical model based on the theory of symmetrical components, which incorporates frequency variation and unbalanced system operation, along with an analytical methodology to determine the capacitance values required for this application and all system elements, including the definition of the sizing factors KE and KM. The proposed approach allows for rigorous design without relying on empirical procedures as commonly presented in the literature, and is experimentally validated using real medical loads. Our experimental setup incorporates current medical devices, including three infusion pumps, a cardioverter-defibrillator, and a patient monitoring device. Despite modest voltage imbalances observed during steady-state operation, all medical devices maintained adequate functionality during testing. The transient response during load switching showed damped oscillations before returning to steady-state operation, demonstrating stable voltage and frequency behavior without the use of active electronic control. The generator demonstrated satisfactory voltage regulation and short-circuit self-protection capabilities without the need for complex systems, making it economically viable for deployment in resource-constrained environments. These results suggest that the proposed configuration offers a practical solution for the electrification of medical facilities in regions where grid extension remains challenging or prohibitively expensive.
Descrição
Palavras-chave
Medical care Remote areas Low cost generator Induction machine
Contexto Educativo
Citação
Romeiro, Bruno; Oliveira, Carlos; Hildenberg, Cicero; Ferreira, Angela; Filho, Francisco (2026). Accessible power for medical equipment in remote healthcare: a solution for single-phase power generation using three-phase induction machines. Engineering Research Express. ISSN 2631-8695. 8:5, p. 1-19
Editora
IOP Publishing