Design and construction of a mortor-based DC volatage step-up system
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Date
2026
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Busitema university
Abstract
This study presents the design and construction of an electromechanical DC Voltage step-up system that converts low-voltage direct current (DC) inputs into higher output voltage using coupled vibrational and DC motors. The system operates by converting electrical energy from a low-voltage source into mechanical energy through vibrational motor, which in turn drives a DC motor functioning as a generator to produce a higher output voltage The developed prototype demonstrated the ability to increase an input voltage of approximately 3.7V to a maximum output voltage of about 20V under no-load conditions. Under load conditions (12V load), the output voltage was observed to be approximately (12.5V) indicating the effect of load resistance on system performance. The efficiency of the system was evaluated based on the ratio of output power to input power and was found to be in the range of (40%-50%) depending on operation conditions.
To meet the growing demand for such applications, new power converter topologies that use the above voltage-boosting techniques, as well as some active and passive components, are continuously being proposed. The permutations and combinations of the various voltage-boosting techniques with additional components in a circuit allow for numerous new topologies and configurations, which are often confusing and difficult to follow (Forouzesh et al. 2017).
Additionally, the system exhibited voltage fluctuations attributed to the nature of mechanical coupling between the vibrational motor and the DC motor.
Overall, the proposed system provides a simple and cost-effective approach to voltage step-up through electromechanical energy conversion. The findings demonstrate its potential for educational applications and low-power systems, while also identifying key limitations related to efficiency and stability that can be improved in future work.
Finally, broad applications of dc–dc converters are presented and summarized with comparative study of different voltage-boosting techniques (Hsieh et al. 2013) . The findings of this research provide valuable insights into energy conversion technologies and offer a practical solution for educators and developers seeking to utilize low-voltage power sources. This project lays the groundwork for future advancements in simple voltage boosting systems, promoting innovation in the fields of electronics and renewable energy applications. However, the operation of these system is affected by various factor such as unstable power supply (weak battery), (Gurgi, Abdalla, and Hassan 2023).