BCU-02 3AUA0000110429變頻器單價
BCU-02 3AUA0000110429變頻器單價
BCU-02 3AUA0000110429變頻器單價
BCU-02 3AUA0000110429變頻技術誕生背景是交流電機無級調速的廣泛需求。傳統的直流調速技術因體積大故障率高而應用受限。
20世紀60年代以後，電力電子器件普遍應用了晶閘管及其升級產品。但其調速性能遠遠無法滿足需要。1968年以丹佛斯為代表的高技術企業開始批量化生產變頻器，開啟了變頻器工業化的新時代。
20世紀70年代開始，脈寬調制變壓變頻(PWM－VVVF)調速的研究得到突破，20世紀80年代以後微處理器技術的完善使得各種優化算法得以容易的實現。
20世紀80年代中後期，美、日、德、英等發達國家的 VVVF變頻器技術實用化，商品投入市場，得到了廣泛應用。 ·早的變頻器可能是日本人買了英國專利研制的。不過美國和德國憑借電子元件生產和電子技術的優勢，·端產品迅速搶佔市場。
相比較國外變頻器的發展狀況，我國的變頻器應用起步較晚，直到20世紀90年代末期才得到較為廣泛的推廣。國內變頻技術發展狀況，可以概括為：變頻器的整體技術相對落後，和國外在變頻調速研究上取得的先進成果比，存在著較大的差距；變頻器使用的核心部件技術·白，目前來說，變頻器的生產中需要的關鍵功率器件，在國內幾乎沒有廠家可以生產，導致我們核心技術受制於國外，·須依靠進口；主要產品集中在低壓產品和中低端市場。由於產品可靠性和工藝水平不高，目前國內變頻器產品主要面向低壓和對性能要求一般的市場，高·能、大功率市場主要被國外大公司佔領。
步入21世紀後，國產變頻器逐步崛起，現已逐漸搶佔·端市場。上海和深圳成為國產變頻器發展的前沿陣地。
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