Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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A study on the contactless generator and recharge system for a bicyle

비접촉식 자전거 발전기 및 충전 시스템 개발에 관한 연구

  • Park, Wang-Geun (Department of Mechanical Design Die & Mold Engineering, Graduate School of Industry Seoul National University of Science & Technology) ;
  • Won, Si-Tae (Department of Mechanical System Design Engineering, Seoul National University of Science & Technology)
  • 박황근 (서울과학기술대학교 산업대학원 기계디자인금형공학과) ;
  • 원시태 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2017.07.04
  • Accepted : 2017.08.01
  • Published : 2017.08.01
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Abstract

In this study, the non-contact type bicycle generator system considering the recharge is developed to use the eco-friendly energy source when the bicycle is operating. The following three main factors are considered in this study. One of factors is that the intensity of the rotating magnet is in the range of 2,700~4,300 [Gause]. The next factor is that the separation distance of rotating magnet and bicycle rim is in the range of 1.5-3.0 mm. The last factor is that the pedaling speed is in the range of 55 RPM [Wheel speed 5.6Km]~150 RPM [Wheel speed 15.25Km] consirering with the 5 staged gear transmission. The obtained results are as followed. (1) The generator output voltage gradually increases from 3V to 10V with the pedaling speed increases, at the separation distance is less than 2.5 mm and the operating voltage of the LED lamp is generated at a pedaling speed of 60 RPM or more. (2) The output current of the generator increases from 20mA to 40mA with the pedaling speed increases, at a separation distance is less than 2.0 mm and the operating current of the LED lamp is generated at a pedaling speed of 60 RPM or more. (3) When the separation distance was 3.0 mm, the output voltage and current are significantly lower than those of the bicycle LED lamp is generated. (4) The charging time is expected to be 12.24 ~ 17.65 hours when the magnitude of the magnet is 3,400[Gauss] at a pedaling speed of 55 RPM or more. (5) As a result of this study, it is thought that the non-contact type bicycle generator system considering the recharge can replace the conventional friction power generation system.

Keywords

References

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