鄧鵬毅，王叢嶺
（電子科技大學(xué)機(jī)電工程學(xué)院，四川 成都 610054）
摘要：矢量控制變頻技術(shù)是先進(jìn)的變頻調(diào)速技術(shù)。異步電機(jī)在兩相同步旋轉(zhuǎn)坐標(biāo)系下的數(shù)學(xué)模型表明：可以實(shí)現(xiàn)交流感應(yīng)電機(jī)磁場(chǎng)和轉(zhuǎn)矩的解耦控制。本文提出了使用高性價(jià)比嵌入式芯片AVR ATmega8515實(shí)現(xiàn)矢量變頻調(diào)速系統(tǒng)的實(shí)施方法。實(shí)驗(yàn)結(jié)果表明：基于AVR的空間矢量變頻調(diào)速系統(tǒng)基本達(dá)到了預(yù)期要求，在實(shí)驗(yàn)負(fù)載條件下能夠進(jìn)行變頻調(diào)速，電壓輸出波形符合理論分析，電流輸出為三相對(duì)稱正弦波。
關(guān)鍵詞：空間矢量脈寬調(diào)制（SVPWM）；AVR嵌入式微控器；變頻調(diào)速；電壓型逆變器
中圖分類號(hào)：TP393.07 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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 systemThe 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
