描述
所谓多重化技术就是每相由几个低压PWM功率单元串联组成,各功率单元由一个多绕组的隔离变压器多级移相叠加的整流方式供电,由CPU实现控制再以光导纤维隔离驱动。输出侧由每个单元的U、V输出端子相互串接而成星型接法给电机供电。通过对每个单元的PWM波形进行重组多重化。可实现输入端(变频器在高频段输出50Hz时)条件下有较低的谐波含量(输出端谐波含量高)
Refurbished ALSTOM STF-DL ANTENNA Ref: 23509 Rev. E
Putzmeister Concrete Axial Piston Pump 067370003 New
ICHINOSE S-7000 SQC-6 Positioner Control Panel NEW
PELCO SD4CBW-PG-E1-X Spectra IV Camera
Bluecoat 800-0B ProxySG 080-02780 NEW
Honeywell Pressure Instrument Druck DPI 701 installed
New Motorola SGLF4136FA JCDMA Broadband XCVR 1X CARD