供电和再生单元
REVCON 前端，带或不带直流总线预充电电路
REVCON® RFE 可实现双向全能量流。在驱动模式下，驱动装置由 RFE 供电；在再生电流模式下，能量被引导回主电源。这样就不会像使用制动斩波器那样浪费能量。
The continuously starting regen process makes sure there is only small voltage raise within the DC-Bus, compared to brake choppers. The feeding function of the Revcon Front End units, enables the supply of several drive controllers through the DC-Bus, with the use of only one central REVCON® RFE module. Due to this function, the mains connection of the drives is no longer required. The pre-charging connection of the RFE B3/D3 limits the inrush current to permissible values. RFE B2/D2 does not have a pre-charge circuit for the DC-Bus capacities. This version can be connected to drives which have their own pre-charge circuit when fed through the DC-Bus. The Revcon Front End unit REVCON® RFE is optimized for applications where many Drives are installed, like e.g. crane installations and textile or printing machinery. But the RFE can also be connected to a single drive in order to upgrade to 4Q drive.
The rated current of the RFE model is the continuous feed power and can be transmitted for 100% of the duty cycle. The drive and regen current waveform mainly corresponds to the wave form of a converter input current and is thus suitable for standard industrial networks.
优势:
- 体积小，结构紧凑
- 驱动系统的制动能量可再生到网络中
- 无需连接变频驱动装置的电源！
- 功率可与应用完美匹配
- 输出功率范围 4kW 至 300kW
- 高度灵活性：主电压介于 230、400、460、500 和 690V 之间
- 网络频率 40-60Hz
- DC 中间电路可耦合多个驱动控制器
- 低损耗、高质量的 IGBT 功率元件
- 自同步
- 可靠性高：反馈运行中的电子过载保护
- 监控电源电压、相位旋转和温度 通过有效的实时控制和模拟运行原理，效率高达 >99%/>98%（驱动/再生模式
- 可进行强动态制动操作
- 用户启动便捷：无需编程或参数设置
- 通过再生运行显著减少热损失。
- 由于采用了创新理念，功率反馈单元无需维护
- 占空比 =100%
