Nanosat極微衛星電源系統規劃與分析; Nanosat power system planning and analysis

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/2164

Title:	Nanosat極微衛星電源系統規劃與分析;Nanosat power system planning and analysis
Authors:	謝其浩;Chi-Hao Hsieh
Contributors:	機械工程研究所
Keywords:	蓄電池充放電計算;太陽能陣列規劃;極微衛星電源系統;電源電路;battery charge/discharge design;solar arrays planning;Nanosat power system;power system circuit
Date:	2002-06-04
Issue Date:	2009-09-21 11:39:51 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本論文係利用各種電機、電子相關理論科學，設計出一個供Nanosat所使用的電源系統，以達成任務需求。Nanosat為10公斤以下的衛星，採用軌道高度800 km的太陽同步圓軌道，軌道傾角為98.6度，軌道週期為101分，主要的任務為CCD雲圖照相、GPS定位。衛星在不同的操作軌道和任務需求有不同的電力需要，而本論文主要是依據Nanosat的規格做電源系統的設計與規劃。在本文將介紹太陽能電池的規劃及蓄電池的充放電設計，且針對Nanosat的酬載進行電力的估算。經分析及計算得知各個子系統所需要之用電功率約為20 W，最大背光時間約為35分，太陽能板有效面積為0.3029 m2，蓄電池放電深電為20.4 %，蓄電池充電電流為1.035 A，蓄電池充電完成時間為1.096小時。電源電路系統包含有直流/直流電壓轉換器、整流二極體、電流感測器、電壓感測器、溫度感測器、可控式開關、保險絲等其它元件。根據各子系統之用電需求，設計出滿足各子系統用電需求之電源電路，藉由電源電路系統的處理、控制電能流向，以確保各個子系統能正常運作，並且對元件做測試，透過測試的結果來了解元件特性，及正常之功能，經由各子系統工作週期的分析，來精簡電能使用以達到電源管理的目標。 The goal of this thesis is design a power system to fit the Nanosat use to reach the mission requirement. The weight of Nanosat is 10 kilograms, sun-synchronous circular orbit, orbit altitude is 800 km, orbit inclination is 98.6 degree, orbit period is 101 minutes. The main mission is atmosphere observation and GPS positioning. In this project, we’ll introduce the solar arrays planning and the battery charge/discharge designing. Make a power summary table for each mission mode. We know the total power we need is 20 W, maximum eclipse period is 35 minutes, solar arrays effective area is 0.3029 m2, the depth of discharge of battery is 20.4 %, charge current is 1.035 A, complete charge time is 1.096 hr. The power circuit system including DC-DC converter, diode, current sense, voltage sense, temperature sense, switch component etc. According to the component and system test to ensure the system will be fine. Conduct trade studies in search of design improvements and duty cycle analysis. Refine the power summary table.
Appears in Collections:	[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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