• SINAMICS DCP controls the electrical power flow between two Direct Current systems

• SINAMICS DCP can be operated  with current control or voltage control

• SINAMICS DCP’s main application is to control the electrical power flow between two DC systems, e.g. between a common DC bus and a stationary battery 
  – from the common DC bus (DCP input, terminals P1 and N1) to a battery (DCP output, terminals P2 and N2) – this is called motoring operation and means positive current 
  – from the battery (DCP output, terminals P2 and N2) back to the common DC bus (DCP input, terminals P1 and N1) – this is called generating operation and means negative current

• Bidirectional power flow is possible

• The voltages of both DC systems may have any values between 0 and +800V

• The voltages in the two DC circuits are independent of one another

• The electrical power flow, controlled by a signed (+ or -) current setpoint specification, is possible regardless of the voltages in the two DC circuits (in the nominal range)

• The current setpoint and control signals can be specified via fieldbus (PROFIBUS – standard; PROFINET or EtherNet/IP – optional via CBE20 Communication Board) or hardwired signals

• Voltage control (even in parallel operation) 
  Constant voltage based on a setpoint, can be used as an adjustable voltage source

• Extended voltage range:  0 V – 800 V DC
  Voltage as low as 0 V to charge SuperCaps

• Parametrizable battery charging characteristic
  Optimum adaptation to various types of battery chemistries and their varying charging requirements

• Voltage regulation on DC bus
  Highest process reliability by maintaining and controlling the DC bus voltage

• Automatic DC bus buffering
  Fast supply of the DC bus from a battery, in case of line supply failure to an infeed unit (SINAMICS S120 ALM), to maintain uninterrupted operation of a motor connected to a frequency converter (SINAMICS S120 Motor Module)

• Variable pulse frequency
  To reduce switching losses, optimize efficiency and control current ripple

• Temperature controlled fans (only available for 120 kW DCP) 
  To optimize efficiency in partial –load range and reduce noise

• Three selectable overload profiles
  

  Power peaks can be briefly provided, peak shaving applications can be realized 
  - Increased current, 0 - 20%, (available for 30 kW DCP and 120 kW DCP)
  - Low overload (only available for 120 kW DCP) 
  - High overload (only available for 120 kW DCP)

  Parametrizable overload reaction based on heat sink temperature
  Derating of switching frequency, derating of current or switch-off

   

• EtherNet/IP™ industrial communication interface
  To integrate into other automation networks

• Local adjustment of voltage and current actual values via control unit
  The voltage and current values that the DCP displays can be adjusted so that they correspond to externally measured values

• Input of an external temperature sensor via control unit
  Three different temperature sensors possible

• Integrated Maximum Power Point (MPP) Tracker
  To maximize the power yield of Photovoltaic arrays

• PV array flying restart
  The no-load voltage of a PV array can be drawn into the continuous running duty range of SINAMICS

• Alternative to braking choppers, e.g. crane & hoist applications 
  When a load is lowered, excess energy can be temporarily stored in rechargeable batteries or SuperCaps. As a consequence, this stored energy can then be used for the next hoisting operation instead of being simply wasted using a braking resistor. As a consequence, for electric crane applications, a significant amount of energy can be saved; and for diesel-powered crane systems, a smaller diesel generator can be used

• Coupling DC buses at different voltage levels 
  DC buses at different voltage levels can be intelligently coupled. As a consequence, only one infeed point (grid converter such as an Active Line Module) is required

• Battery test stands 
  Using the bidirectional DC-DC converter, battery test stands can be implemented to test the performance of batteries / rechargeable batteries

• Mining conveyor belts 
  SINAMICS DCP is especially interesting for conveyor belts in the mining sector, as connected energy storage devices (Batteries, SuperCaps) can be used to store energy when braking, which can later be utilized to cover load peaks. This means that smaller diesel generators can be used and operated at their optimum operating point, with the corresponding reduction in costs and fuel consumption

• BESS (Battery Energy Storage Systems) 
  To implement stationary battery energy storage systems by connecting battery modules to the DC-DC converter. The energy is then fed into the grid or standalone supply via a common DC bus and a grid converter

• Wind and photovoltaic
  To buffer excess energy from wind turbines and PV systems - the excess energy is temporarily stored in batteries.  
    - SINAMICS DCP is also suitable for exciting synchronous generators from a DC bus

• Electric vehicle infrastructure - electric cars, buses, trains, boats, etc. 
  for charging and discharging batteries in a stationary infrastructure

View application example

View application example

View application example