描述
為了對(duì)本文提出的永磁直驅(qū)風(fēng)力發(fā)電系統(tǒng)的控制策略進(jìn)行試驗(yàn)驗(yàn)證,本文設(shè)計(jì)并構(gòu)建了一套完整的10kw永磁直驅(qū)風(fēng)力發(fā)電系統(tǒng)試驗(yàn)平臺(tái),其原理如圖4所示。為了模擬實(shí)際風(fēng)力發(fā)電機(jī)由于風(fēng)力大小引起的速度變化,試驗(yàn)平臺(tái)采用了變頻器拖動(dòng)15kw異步發(fā)電機(jī)通過(guò)齒輪箱降速帶動(dòng)10kw永磁發(fā)電機(jī)發(fā)電,如圖5所示為平臺(tái)外觀。整個(gè)系統(tǒng)采用多cpu的主從式數(shù)字分布控制系統(tǒng),主要設(shè)備包括變頻器、三相異步發(fā)電機(jī)、齒輪箱、永磁同步電機(jī)、用于觀測(cè)的轉(zhuǎn)矩轉(zhuǎn)速傳感器、背靠背式pwm變流器、網(wǎng)側(cè)lcl濾波器、變壓器、電壓電流傳感器等;控制系統(tǒng)有雙dsp結(jié)構(gòu)的永磁直驅(qū)控制電路、對(duì)電壓電流采樣進(jìn)行調(diào)理的調(diào)理電路、驅(qū)動(dòng)igbt的驅(qū)動(dòng)電路以及調(diào)試pc機(jī)與dsp控制電路的通信、人機(jī)接口等。
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