Siemens SINAMICS DCM Compact User Manual
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Siemens SINAMICS DCM Compact User Manual

Dc converter, 12-pulse applications
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  • Page 3: Pulse Parallel Connection

    Instructions Area of application 12-pulse parallel connection 12-pulse series connection SINAMICS DCM 12-pulse applications Switchover of the power unit topology - option S50 Compact User Manual 09/2015 A5E34871844H...

  • Page 4: Instructions

    Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 5: Table Of Contents

    Configuration ........................... 13 3.2.1 Power increase with parallel connection................. 14 3.2.1.1 Parallel connection of additional SINAMICS DCM devices in 6-pulse operation ....14 3.2.1.2 Parallel connection of additional SINAMICS DCM units in 12-pulse operation ...... 15 3.2.2 Prerequisites for the device ....................16 3.2.3...
  • Page 6 Table of contents 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 7: Instructions

    The sales contract represents the overall obligations of the PD Process Industries and Drives Division of Siemens AG. The warranty specified in the contract between the parties is the only warranty accepted by PD Process Industries and Drives of Siemens AG.
  • Page 8 Instructions 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 9: Area Of Application

    Area of application This application document provides support for SINAMICS DCM converters in 12-pulse applications. In order to make sense of this application document, it is assumed that the reader has read the contents of the SINAMICS DCM operating instructions.
  • Page 10 Area of application 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 11: 12-Pulse Parallel Connection

    12-pulse parallel connection Topologies Topology The following diagram shows the topology of a 12-pulse parallel connection. Figure 3-1 12-pulse parallel connection (1), block diagram The following diagram shows the topology of a 12-pulse parallel connection, where an additional 6-pulse converter is connected in parallel to each of the two 12-pulse converters connected in parallel.
  • Page 12 12-pulse parallel connection 3.1 Topologies Figure 3-2 12-pulse parallel connection (2), block diagram Note If additional converters are connected in parallel to the master converter, then exactly the same number of converters must also be connected in parallel with the slave converter. Operation of 12-pulse parallel connection and 6-pulse parallel connection For the converter topologies as shown in Fig.

  • Page 13: Configuration

    Non-permissible parallel connection However, you can connect devices in parallel according to Figure 3-4 Parallel connection of additional SINAMICS DCM devices in 6-pulse operation (Page 14) or Figure 3-5 Parallel connection of additional SINAMICS DCM units in 12-pulse operation (Page 15).

  • Page 14: Power Increase With Parallel Connection

    Parallel connection of additional SINAMICS DCM devices in 6-pulse operation A maximum of 5 additional SINAMICS DCM devices (M1P1 to M1P5 and S1P1 to S1P5) can be connected in parallel to the SINAMICS DCM devices of the 12-pulse unit (master M1 and slave S1) in 6-pulse operation (for details on the 6-pulse parallel connection, see SINAMICS DCM operating instructions, chapter "Connecting devices in parallel and in series").

  • Page 15: Parallel Connection Of Additional Sinamics Dcm Units In 12-Pulse Operation

    ● Disadvantage: Smoothing reactors are required to avoid a higher current ripple. 3.2.1.2 Parallel connection of additional SINAMICS DCM units in 12-pulse operation The 12-pulse unit (master M1 and slave S1) can be connected in parallel to a maximum of 2 additional 12-pulse units (M2, S2 and M3, S3) on the DC side, whereby the units connected in parallel follow the setpoints of the first master.

  • Page 16: Prerequisites For The Device

    12-pulse parallel connection 3.2 Configuration Advantages and disadvantages of this configuration: ● Advantage: Lower current ripple ● Disadvantage: Each unit requires its own 12-pulse transformer 3.2.2 Prerequisites for the device Transformer 12-pulse operation is achieved in the network by an additional winding system, electrically swiveled by 30°, belonging to the supplying transformer.

  • Page 17: Dimensioning Of The Converter Transformer

    AI2 at X177.29-30 is activated using parameter p51854 = 1. p51855 is used to scale the analog value measured via X177.29-30 (AI2). See function diagram 6902 in the SINAMICS DCM List Manual. 3.2.3 Dimensioning of the converter transformer...
  • Page 18 12-pulse parallel connection 3.2 Configuration Application with isolation transformer 1) Transformer 2) Overvoltage protection 4) SINAMICS DCM 5) Smoothing reactor 6) DC motor 7) Line reactor 8) Current setpoint input = rated voltage of the line supply connected at the converter input = direct current of a partial converter (½...

  • Page 19: Dimensioning Of The Smoothing Reactors

    12-pulse parallel connection 3.2 Configuration 3.2.4 Dimensioning of the smoothing reactors WARNING The correct dimensioning of smoothing reactors is very important and should be made only by persons with sufficient knowledge of 12-pulse applications. If the inductance of the smoothing reactors is too low, instead of 60° long current blocks, this may result in 30°...

  • Page 20: Selection For Overvoltage Protection

    Information on the calculation of energy to be shunted in the various situations and technical data for SICROWBAR 7VV3002 can be found in the SICROWBAR 7VV3002 operating instructions. Internet link: SICROWBAR overvoltage protection 7VV3002 operating instructions (https://support.industry.siemens.com/cs/ww/en/ps/13450/man) Dimensioning for 10,000 operating cycles is recommended. 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 21: Insulation Monitoring

    BENDER Commissioning In principle, all converters should be commissioned as described in the Commissioning chapter of the SINAMICS DCM DC Converter operating instructions. The settings in chapter Specifying the operating mode (Page 22) and chapter Additional before parameter settings (Page 23) should be made commissioning (chapter Carrying out commissioning (Page 24)).

  • Page 22: Specifying The Operating Mode

    Two operating modes are supported: Operation with firing angle interface (p51799 = 0 or p51799 = 21) ● Master (SINAMICS DCM 1): Closed-loop speed control, armature current closed-loop control and field current closed-loop control ● Slave (SINAMICS DCM 2): Armature current closed-loop control The master determines the theoretical firing angle and transfers it to its own gating unit and to the gating unit of the slave.

  • Page 23: Additional Parameter Settings

    12-pulse parallel connection 3.3 Commissioning 3.3.2 Additional parameter settings Table 3- 2 Parameter settings on the master converter and on the slave converter: Parameter Master Slave or parallel devices p51799 Mode of operation 0, 21 or 22 The same as on the master p51800 Position in the topology 21 (12-pulse master)

  • Page 24: Carrying Out Commissioning

    12-pulse parallel connection 3.3 Commissioning 3.3.3 Carrying out commissioning Preconditions for commissioning ● the smoothing reactors are available and are dimensioned correctly (see Chapter Dimensioning of the smoothing reactors (Page 19)) and ● the parameter for the rated motor current (p50100) is set correctly at all of the partial converters.

  • Page 25: Optimization For 2 Individual Reactors

    12-pulse parallel connection 3.3 Commissioning 3.3.4.1 Optimization for 2 individual reactors Perform the optimization run for the armature current control (p50051 = 25). During this optimization run, the firing angle is shifted in the Alpha-G direction until either 90% of the rated motor current is reached or until the rated device current (r50072[1]) is reached, depending on which case occurs first.

  • Page 26: Optimization For An Interphase Transformer

    = p50111 determined filter If several devices are connected in parallel, then the determined values must be set corresponding to Table (* half the number of SINAMICS DCM). The current control values must be manually checked. Parameter Master Slave or parallel units...

  • Page 27: 12-Pulse Series Connection

    12-pulse series connection Topologies 4.1.1 12-pulse series connection of two SINAMICS DCMs Topology The following diagram shows the topology of a 12-pulse series connection of two SINAMICS DCM. Figure 4-1 12-pulse series connection (1), block diagram The following diagram shows the topology of a 12-pulse series connection, where an additional converter is connected in parallel to each of the two 12-pulse converters connected in series.
  • Page 28 12-pulse series connection 4.1 Topologies Figure 4-2 12-pulse series connection (2), block diagram Operating modes There are two operating modes: ● Operation with the same firing times (p51799 = 41): Both partial converters are fired at precisely the same instant. The master calculates the firing point and this is transferred to the slave via the parallel interface.

  • Page 29: 12-Pulse Series Connection: Controlled Converter + Uncontrolled Converter

    12-pulse series connection 4.1 Topologies Therefore, a conscious decision must be made: ● Low ripple, but no reduction of the reactive power: → operation with the same firing times (p51799 = 41) ● Low reactive power, but no reduction of the ripple: →...

  • Page 30: Configuration

    4.2.1 Power increase with parallel connection Additional devices can be connected in parallel to the SINAMICS DCM 12-pulse series master device and the 12-pulse series slave device to increase the output current. The maximum possible configuration is 2 groups in series, each consisting of 3 devices connected in parallel.

  • Page 31: Prerequisites For The Device

    30°. This phase allocation may need to be checked by taking a measurement. Converter equipment SINAMICS DCM software version V1.2 or higher. All SINAMICS DCMs must have the same software version. Symmetry resistor...
  • Page 32 The motor armature voltage is calculated in the device from the sum of the output voltages of the master and slave. For a series connection of a SINAMICS DCM and a diode bridge, the following ap- plies: The motor armature voltage is calculated in the device from the sum of the output voltages of the master and diode bridge.

  • Page 33: Dimensioning Of The Converter Transformer

    8) Parallel interface 9) Symmetry resistor = rated voltage of the line supply connected at the converter input = direct current through both SINAMICS DCM devices and motor Figure 4-5 Converter transformer dimensioning at higher voltage level Transformer: A separate three-winding converter transformer is used to connect to the network of a higher voltage level.

  • Page 34: Voltage Limits

    8) Parallel interface 9) Symmetry resistor = rated voltage of the line supply connected at the converter input = direct current through both SINAMICS DCM devices and motor Figure 4-6 Converter transformer dimensioning at low voltage Transformer: When there is a low-voltage rail, an isolation transformer with a voltage transformation ratio of 1:1 is used upstream of the slave converter for a 30°...
  • Page 35 12-pulse series connection 4.2 Configuration resistors or of one of the converters can, for example, result in an impermissible increase in the thyristor reverse voltages. For this reason, the maximum input voltage depending on the device types (according to the following table) must not be exceeded by any device: MLFB Max.

  • Page 36: Selection For Overvoltage Protection

    Information on the calculation of energy to be shunted in various operations and technical data for SICROWBAR 7VV3002 can be found in the SICROWBAR 7VV3002 operating instructions. Internet link: SICROWBAR overvoltage protection 7VV3002 operating instructions (http://support.automation.siemens.com/WW/view/en/17635427/133300) Dimensioning for 10,000 operating cycles is recommended. 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 37: Insulation Monitoring

    BENDER Commissioning In principle, all converters should be commissioned as described in the Commissioning chapter of the SINAMICS DCM DC Converter operating instructions. before The settings in Chapter Additional parameter settings (Page 37) should be made commissioning. See Chapter Carrying out commissioning (Page 40) To make the settings, use ●...
  • Page 38 12-pulse series connection 4.3 Commissioning Parameter Master Slave or parallel devices p51801 Amount of send data 0,4,8,12,16 The same as at the master p51802 Number of power units ≥ 2 ≥ 2 p51803 n+m mode p51804[..] Send data Application-specific Application-specific p51805 Bus terminator 0 or 1...
  • Page 39 12-pulse series connection 4.3 Commissioning Table 4- 3 For 12-pulse series connection of SINAMICS DCM converters with an uncontrolled rectifier: Parameter Master Parallel units p51798 Voltage on the uncontrolled rectifier Application-specific (50 % - The same as on the master...

  • Page 40: Carrying Out Commissioning

    12-pulse series connection 4.3 Commissioning 4.3.2 Carrying out commissioning Commission the master converter and the slave converter as described in the SINAMICS DCM DC converter operating instructions (commissioning steps 1 up to and including 8): ● When commissioning with the BOP20 operator panel: Perform commissioning steps ●...

  • Page 41: Optimization Runs

    The additional optimization runs are then carried out, starting with the optimization run for the speed control at the master converter. Table 4- 5 For 12-pulse series connection of SINAMICS DCM converters with an uncontrolled rectifier Parameter Master Parallel units p50110 Armature resistance Ra Actual armature resistance ×...
  • Page 42 12-pulse series connection 4.3 Commissioning 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 43: Switchover Of The Power Unit Topology - Option S50

    Switchover of the power unit topology - option S50 Note The SINAMICS DCM can only be equipped or retrofitted with option S50 in the factory. In certain applications, it is necessary to switch between two different power unit topologies (such as between 12-pulse parallel connection and 12-pulse series connection) during operation by means of a command.
  • Page 44 The contactors can only be switched in a de-energized state. During power up of the SINAMICS DCM, both power unit topologies are switched off. After this, the two power unit topologies are mutually locked inside the device so that only one power unit topology can be switched on.
  • Page 45 ● If power unit topology 2 is selected, – option S50 must be available – the master function must be set on the same SINAMICS DCM as for power unit topology 1 – no "n+m" mode may be set (i.e., p51803 must = 0) ●...
  • Page 46 Switchover of the power unit topology - option S50 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

  • Page 47: Index

    Index Parallel connection 12-pulse, 11 Series connection 12-pulse, 29 6-pulse, 27 12-pulse applications Compact User Manual, 09/2015, A5E34871844H...

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