臺灣博碩士論文加值系統

中文摘要

在本篇論文中，我們將提出一些關於人力腳踏車發電機的研究，在實驗中，能量的來源將 是旋轉運動中的輪胎。 在理想的狀態下，實驗的模組將以不改變腳踏車的結構為原則。 而本 篇論文中運用的基本理論為法拉第定律，其為一個隨著時間變化之磁場產生感應電場，而將電 能收集起來即成為一個發電機。 而在本篇論文中，我們首先探討利用電磁鐵來取代傳統的永磁 性磁鐵。 我們將此模式稱為「free mode」，其原因為永磁性磁鐵雖然易於使用以及設定，但對 使用者而言卻缺少了使用上的彈性。 其次，我們將設計一個新的架構，它將會改善發電機中磁 路的效能，進而提高整體發電機的效率。 最後，我們提出一個模組化的設計，可以讓使用者自 由選擇期負載。 本篇論文的貢獻可分三項來作敘述。 第一，降低成本。我們選擇使用廉價的 材料，但卻透過磁路的設計，避免整體性能產生大幅的衰退。 第二，方便性。在本篇論文中所 提出的幾個負載模式，將可視自行車騎者體力與路面坡度的不同做發電量的選擇。 第三，高效 率。我們所提出的新架構將會對磁場的使用有相當效率上的改善。

最後，我們相信在未來綠色能源的研究將會如雨後春筍般不斷的發表出來，這也將逐步減少 人類對於地球的汙染，更加的盡好人類身為地球管理者的職分。

In this thesis, we address on the research of the bicycle electric generator which is powered by human energy. The energy source comes from wheel rotating. For ideal condition, the original wheel structure should not be changed. However, there will be some structure modification in our proposed design. The principle of the bicycle electric generator is the Faraday’s Law of Induction. A rotating device with magnets will cause time-variant magnetic field. The coil of generator mode is transfer magnetic field energy to electric energy. In this thesis, we will first discuss how to use the electric magnet to replace permanent magnet. We call this mode as free mode, because the permanent magnet is easy to set up, but inconvenient when the rider does not want to generator electricity. Secondly, we designed a new electric generator structure for the bicycle, it will be more effective than the previous design. Thirdly, we propose a module for electric generator that can select the load they want. In the final of this thesis, we will discuss about the magnetic circuit analysis, and use the model to simulate the human-power bicycle generator. The contributions of our works are as follows:

1. More Cheaper Electric Generator: We utilize the as possible as cheaper part to built the model, but does not decrease the effective.

2. Convenience for Users: We offer many modes to fit many cases, therefore it could easy to set up.

3. More Effective: We design a new combine to produce max magnetic field.

Finally, we believed the Green Energy will be more popular than before, and we should try the development of related terms will reduce the earth pollution.

中文摘要I
Abstract II
Acknowledgement III
List of Figures VI
List of Tables VII
1 Introduction 1
1.1 Motivation and Background 1
1.2 The Proposed Scheme 1
1.3 Organization of This Thesis 2
2 Review of PreviousWorks 3
2.1 Wind Energy 3
2.1.1 HY-mini Personal Portable Wind Power Bicycle Kit 3
2.1.2 Duck-Image Wind Pwered bicycle Light 3
2.1.3 Another New Idea for Hsieh Jung-Ya’s Wind Powered Bicycle Light 3
2.2 Kinetic Energy 4
2.2.1 SANYO’s Bicycle Electric Generator 5
2.2.2 GreenWheel 5
2.2.3 Pedal Bicycle Electric Generator 5
2.2.4 Front Wheel Axle Bicycle Electric Generator 5
2.3 Magnet Sandwich and Coil Sandwich Design 6
2.4 Magnet Sandwich Design 6
3 Electric Generator of Human Powered Bicycle 10
3.1 Sturcture And Theory Analysis 10
3.1.1 Theory Analysis 10
3.1.2 Magnetic Field 10
3.1.3 Analysis 11
3.2 Challenge and Difficult 11
3.2.1 Power Efficiency 11
3.2.2 Cost/ Performance 12
3.2.3 Convenience 12
3.2.4 Maintainance 12
3.2.5 Exhaust Physical Strength 13
3.3 Experiments 13
3.3.1 Simulation Equipments 13
3.3.2 Conclusions 13
4 Conclusions and FutureWorks 20
Bibliography 21



List of Figures
2-1 HY-mini Personal Portable Wind Power Bicycle Kit 7
2-2 Another HY-mini Personal Portable Wind Power Bicycle Kit 7
2-3 Duck-Image Wind Powered Bicycle Light 8
2-4 SANYO’s Bicycle Electric Generator 8
2-5 Green Wheel 9
2-6 Front Wheel Axle Bicycle Electric Generator 9
3-1 Model Blueprint 14
3-2 Single Magnetic Field Model 14
3-3 Double Magnetics Field Model 15
3-4 4 Magnetics Field Model 15
3-5 Improvement for 4 Magnetics Field Model 16
3-6 Experiment, Part A 17
3-7 Experiment, Part B 18
3-8 Improve the airgap less model 19


List of Tables
2.1 Properties of Discussed Electric Generators 6
3.1 Properties of Experimental and Discussed Electric Generators 13

[1]Electric generator for bicycles. U. S. Patents, (810651), Jan. 23 1906.

[2]Built-in generator for bicycle. U. S. Patents, (5115159), May 19 1992.

[3]Piezoelectric electric energy generator. U. S. Patents, (5512795), Apr. 30 1996.

[4]Electric power generator. U. S. Patents, (5631507), May 20 1997.

[5]Bicycle electricity generator and a method of attaching the electricity generator to a bicycle. U. S. Patents, (6002187), Dec. 14 1999.

[6]Bicycle lighting system and generator. U. S. Patents, (5857762), Jan. 12 1999.

[7]Electric generator for bicycles. U. S. Patents, (5895991), Apr. 20 1999.

[8]Bicycle power supply. U. S. Patents, (6418041 B1), July 9 2002.

[9]Bicycle electric power unit. U. S. Patents, (US 20060226879A1), Oct. 12 2006.

[10]Bicycle electrical generator hub. U. S. Patents, (7042123 B2), May 9 2006.

[11]Claw pole electric generator and bicycle electric generator hub. U. S. Patents, (US 7199500 B2), Apr. 3 2007.