三相正弦波變頻電源設計

測控論文編號:CK103   論文字數:12826,頁數:43

 
目 錄
摘要……………………………………………………………………………. . .……………..3
1 前言…………………………………………………………………………………………...7
2 總體方案設計……………………………………………………………………………. . .8
2.1  系統設計框圖…………………………………………………………………….……8
2.2  系統原理框圖…………………………………………………………………….... . ..8
3 方案論證……………………..…………………………………………………………...10
 3.1  AD-DC模塊…………………………………………………………………………..10
 3.2  DC-DC 模塊………………………………………………………………………….10
  3.3  DC-AC模塊論證…………………………………………………………………..…13
   3.4 測量模塊方案論證……………………………………………………………………..16
   3.5 控制模塊方案論證……………………………………………………………………..17
4 硬件設計……………………………………………………………………….……….…....18
 4.1  硬件簡介……………………………………………………………………………....18
 4.2  整流濾波電路……………………………………………………………………..…..20
 4.3  斬波及驅動電路……………………………………………………………….……...20
 4.4  逆變及驅動電路…………………………………………………………….………...24
 4.5  真有效值轉換電路…………………………………………………………………....26
 4.6  液晶顯示及存儲電路………………………………………………………………..27
 4.7  過流保護電路…………………………………………………………………….….27
 4.8  過壓保護電路……………………………………………………….…………….…28
 4.9  單片機外圍電路………………………………………………………………….….29
 4.10 供電電源……………………………………………………………………………..30
5  軟件設計…………………………………………………………………………. . .….…32
 5.1  軟件設計簡介…………………………………………………………………….…32
 5.2  SPWM波的實現………………………………………………………………….……32
5.3  PWM波的實現……………………………………………………………..…….……32
 5.4  ADC0809的控制程序設計……………………………………………..….………33
5.5  液晶顯示的驅動設計 35
5.6  矩陣式的鍵盤設計 37
5.7  系統總體軟件設計…………………………………………………………………38
6  系統的調試………………………………………………….…………………………....40
 6.1  測試儀器與設備………………………………………………………………….…40
 6.2  指示測試………………………………………………………………………….…40
7  總結.................………………………………………………………………….…….….43
致謝 44
參考文獻 4

摘  要
 
 隨著電力電子技術的飛速發展，正弦波輸出變頻電源已被廣泛應用在各個領域中，與此同時對變頻電源的輸出電壓波形質量也提出了越來越高的要求。在實驗室和工業部門，三相正弦波變頻電源常用于各種測量和控制電路中，產生單相或三相正弦波信號作為基準信號，基準正弦波的波形質量直接影響到測量和控制的精度。對于一個良好的正弦信號源，要求其輸出的基準正弦波信號幅值、頻率高度穩定、失真度小、帶負載能力強、幅值可調，對于三相正弦波信號還要求三相對稱度好。兼顧這些要求往往使電路變得復雜。因此，研究開發既簡單又具有優良動、靜態性能的逆變器控制策略，已成為電力電子領域的研究熱點之一。

關鍵詞：三相正弦波 變頻 逆變

Abstract
 Along with the rapid development of power electronic technology, sinusoidal output variable frequency power has been widely applied in various fields, meanwhile the output of variable frequency power voltage waveform quality also put forward higher request. In the laboratory and industrial sectors, three-phase inverter power often used in all kinds of sine wave measuring and controlling circuit, produce single-phase three-phase sine signals, or as the benchmark signals, the benchmark sine wave quality directly affect the accuracy of measurement and control. For a good sine signal output of its benchmark sine signal amplitude, frequency stability, high degree of small and load capacity, amplitude, adjustable for three-phase sine signals, also requires good symmetry three-phase. Both these requirements often make complicated circuit. Therefore, the research and development is simple and has good dynamic and static performance of the inverter control strategy, has become the focus of research in the field of power electronics.
Keywords：Three-phase sine wave frequency inverter