1734IE4S參詳
1734IE4S參詳
1734IE4S參詳
變頻器電源主要用於交流電機的變頻調速,其在電氣傳動係統中佔據的地位日趨重要,已獲得巨大的節能效果。變頻器電源主電路均採用交流-直流-交流方案。工頻電源通過整流器變成固定的直流電壓,然後由大功率晶體管或IGBT組成的PWM高頻變換器, 將直流電壓逆變成電壓、頻率可變的交流輸出,電源輸出波形近似於正弦波,用於驅動交流異步電動機實現無級調速。
國際上400kVA以下的變頻器電源係列產品已經問世。八十年代初期,日本東芝公司·先將交流變頻調速技術應用於空調器中。至1997年,其佔有率已達到日本家用空調的70%以上。變頻空調具有舒適、節能等優點。國內於90年代初期開始研究變頻空調,96年引進生產線生產變頻空調器,逐漸形成變頻空調開發生產熱點。預計到2000年左右將形成高潮。變頻空調除了變頻電源外,還要求有適合於變頻調速的壓縮機電機。優化控制策略,·選功能組件,是空調變頻電源研制的進一步發展方向。
1734IE4S參詳
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1734IE4S參詳
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