VVVF变频、矢量控制变频、直接转矩控制变频都是交—直—交变频中的一种。其共同缺点是输入功率因数低，谐波电流大，直流电路需要大的储能电容，再生能量又不能反馈回电网，即不能进行四象限运行。为此，矩阵式交—交变频应运而生。由于矩阵式交—交变频省去了中间直流环节，从而省去了体积大、价格贵的电解电容。它能实现功率因数为l，输入电流为正弦且能四象限运行，系统的功率密度大。该技术虽尚未成熟，但仍吸引着众多的学者深入研究。其实质不是间接的控制电流、磁链等量，而是把转矩直接作为被控制量来实现的。
倍德立（厦门）科技有限公司
销售经理:张卫东 联系电话：13055237500 座机：0592-6085900 QQ:3454941352
销售经理：杨帆 联系电话：13358371730 座机：0592-6085900 QQ: 2921696645
销售经理：叶工 联系电话：15359890861 座机：0592-6087118 QQ: 2650907184
优势品牌：
Siemens（西门子）:
● 西门子S7-200CN、S7-200SMART、ET200、 S7-300 、S7-400 、6AV、6G系列备件.
● HMI 触摸屏TD200、TD400C、TP177、MP277、MP377、SMART700 、SMART1000.
● MM系列变频器、电源模块、1200模块、触摸屏、1500模块、smart模块.
● 西门子电线电缆、DP接头 、网线网卡等附件.
AB（罗克韦尔）:1734/1746/ 1747/ 1756/1762系列， 承接AB罗克韦尔全系列PLC 变频器、触摸屏、软启动、伺服等业务.
Schneider（施耐德）:PLC控制器、140处理器、输入输出模块、电源模块、变频器低压配件等。
P+F倍加福、Phoenix菲尼克斯、IFM易福门、Beckhoff倍福、富士、ABB低压 等进口品牌.
DFS60B-S1AK01024
DFS60B-S1CK01024
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490NAC0100
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现货全新
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