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系統識別號 U0026-0201202123184000
論文名稱(中文) 自由活塞式史特靈引擎與線性振盪發電機之整合模型分析
論文名稱(英文) Integrated Model Analysis of a Free-Piston Stirling Engine Incorporated with a Linear Alternator
校院名稱 成功大學
系所名稱(中) 能源工程國際碩士學位學程
系所名稱(英) International Master Degree Program on Energy Engineering
學年度 109
學期 1
出版年 110
研究生(中文) 陳怡嘉
研究生(英文) Yi-Jia Chen
電子信箱 p06074034@gs.ncku.edu.tw
學號 P06074034
學位類別 碩士
語文別 英文
論文頁數 91頁
口試委員 指導教授-鄭金祥
口試委員-謝旻甫
口試委員-王偉成
口試委員-鄭宗杰
中文關鍵字 整合模型  電磁模型  熱力模型  動力模型  線性振盪發電機  自由活塞式史特靈引擎 
英文關鍵字 Integrated model  Electromagnetic model  Thermodynamic model  Dynamic model  linear alternator  Free-piston Stirling engine 
學科別分類
中文摘要 本研究將自由活塞式史特靈引擎結合線性振盪發電機建立整合系統。由於自由活塞式史特靈引擎具有較簡單機構,其運作參數被限制在一定範圍內。隨著線性交流發電機的結合,整合系統的動態特性隨之改變。本研究進行數值模擬以預測系統特性,並通過數值模擬獲得可行的操作條件。由於影響整合系統運行的參數較為複雜,因此觀察其數值模擬結果可為線性交流發電機開發的提供進一步參考數據。
在本研究中,線性振盪發電機被視為自由活塞式史特靈引擎動態模型的外部負載。採用商業電磁模擬軟體JMAG,建立線性振盪發電機的電磁模型。自由活塞式史特靈引擎之動力模型、熱力模型與系統整合模型是藉由Visual Basic建構。系統之動態行為以及線性振盪發電機的電磁輸出透過數值模擬獲得。透過分析自由活塞式史特靈引擎的幾何參數與操作條件可取得整合系統之運作狀態。其分析數據做為實驗驗證之依據。
英文摘要 An integrated model considering a linear alternator incorporated with free-piston Stirling engine (FPSE) is developed in this study. With the simple mechanism of the free piston Stirling engine, the operating parameters are restricted in certain range. In order to predict the performance of the integrated system, numerical simulation is performed in this study. With the integration of linear alternator, the operating characteristics of system has changed which can be testified through numerical simulation to obtain workable input condition. Since the parameters that affecting the operation of integrated system are complicated, observing the output simulation results provide reference data for further development of linear alternator.
In this study, the FPSE is integrated with a linear alternator which is considered as an external load for the dynamic model. Using commercial electromagnetic simulation software JMAG, the electromagnetic model of the linear alternator is constructed. The in-house thermodynamic, dynamic and the integrated program are built based on Visual Basic computer language. The dynamic behavior of integrated system along with the electrical output of the linear alternator are obtained. The geometric parameters and initial operating conditions of FPSE are analyzed and an compatible condition is found for the integrated system. The analysis data can be the reference for further experimental application.
論文目次 Chapter I INTRODUCTION 1
1.1 Motivation 1
1.2 Stirling Engine 2
1.2.1 Operating principle of the ideal Stirling cycle 2
1.2.2 Free-piston Stirling engine (FPSE) 2
1.3 Linear alternator 3
1.3.1 Working principle 3
1.3.2 Electromagnetic simulation and analysis 5
1.4 FPSE incorporated with linear alternator 6
1.5 Research motivations and objectives 8
1.6 Thesis architecture 9
Chapter II THEORATICAL MODEL 11
2.1 Assumptions 11
2.2 Dynamic model 12
2.2.1 The geometric parameters of FPSE 13
2.2.2 Equation of motion 13
2.2.3 Collision model 15
2.3 Thermodynamic model 16
2.3.1 Initial conditions 16
2.3.2 Volume change in each chamber 18
2.3.3 Pressure change in each chamber 19
2.4 Electromagnetic model 19
2.4.1 Governing equation 20
2.4.2 Force exerted on mover 23
2.4.3 Electromotive force (EMF) 24
2.4.4 Energy loss of linear alternator 25
2.5 Calculation process 26
Chapter III NUMERICAL MODULES 28
3.1 Numerical simulation of linear alternator 28
3.1.1 Geometric model 28
3.1.2 Mesh setting 29
3.1.3 Circuit design 29
3.1.4 Motion condition 30
3.1.5 Electromagnetic force 30
Chapter IV RESULTS AND DISCUSSION 31
4.1 Parametric study of FPSE 31
4.1.1 Effects of charged pressure on FPSE 31
4.1.2 Effects of applied heating temperature on FPSE 32
4.2 Parametric study of linear alternator 32
4.2.1 Effects of moving amplitude of mover 33
4.2.2 Effects of vibration frequency of mover 33
4.2.3 Effects of magnet material of mover 34
4.2.4 Effects of coil winding turns 35
4.3 Linear alternator integrated with FPSE under different operating condition 35
Chapter V CONCLUSIONS 37
Reference 39
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