鄧鵬毅，王叢嶺 （電子科技大學機電工程學院，四川 成都 610054）   摘要：矢量控制變頻技術是先進的變頻調速技術。異步電機在兩相同步旋轉坐標系下的數學模型表明：可以實現交流感應電機磁場和轉矩的解耦控制。本文提出了使用高性價比嵌入式芯片AVR ATmega8515實現矢量變頻調速系統的實施方法。實驗結果表明：基于AVR的空間矢量變頻調速系統基本達到了預期要求，在實驗負載條件下能夠進行變頻調速，電壓輸出波形符合理論分析，電流輸出為三相對稱正弦波。   關鍵詞：空間矢量脈寬調制（SVPWM）；AVR嵌入式微控器；變頻調速；電壓型逆變器   中圖分類號：TP393.07 文獻標識碼：A 文章編號：1672-4984(2006)02-0033-04   Research of SVPWM-AC motor controller realized with AVR   DENG Peng-yi, WANG Cong-ing （College of Mechanical Electronic，University of Electronic Science and Technology，Chengdu 610054，China）   Abstract: In this paper, variable-frequency-peed-regulation technology was displayed. With many advantages, Space-Vector-Pulse-Width-Modulation(SVPWM) is a better method conlpared with Sinusoidal PWM in field of AC motor speed regulation. Mathematic model in 2-phase-rotation-coordinates with synchronous speed appears and the stator current is synthesized by two components and AC motor can be controlled like a DC machine which torque and field can be adjusted respectively. An inbuilt system based ATmega8515 was investigated and analyzed to realize the SVPWM slid frequency systemThe results of experiments indicated that the scheme of hardwares and softwares were successful and the SVPWM speed-regulation-system could work normally under the given load. The output waves of voltage, currents and speed curve were coincident with the expectable one. Key words：Space-vector PWM；AVR micro-processor；Variable frequency drives；Voltage source inverters