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Table of Contents

This block processes the communication and configuration between the RT-LAB CPU-based model and the FPGA-based Electrical Machine model. It supports up to 4 machines, and each of them can be one of the following machine types:

• Synchronous Machine with Round Rotor

• Synchronous Machine with Salient-pole Rotor

• Induction Machine with Squirrel-cage Rotor

• Induction Machine with Double Squirrel-cage Rotor

• Doubly-fed (Wound Rotor) Induction Machine

• Permanent Magnet Synchronous Machine

• Brushless DC motors

The Synchronous Machine model is presented in Synchronous Machine Model page.

The Induction Machine model is presented in Induction Machine Model page.

The Permanent Magnet Synchronous Machine model is presented in Permanent Magnet Synchronous Machine Model page.

The Brushless DC Machine Machine model is presented in Brushless DC Machine Model page.

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Block mode: This parameter is used to select which type of FPGA-based machine model that is available in the firmware. It supports:

• Quad generic machine model mode for simulation of up to 4 Synchronous Machine or Asynchronous machine models.

• Dual PMSM Variable DQ mode for simulation of up to 2 Permanent Magnet Synchronous Machine or Brushless DC motor models.

Once the selection is made, the available model types will be refreshed in each machine tab. This parameter is global to the block. For simulating of a Induction machine and a Permanent magnet machine in the same CPU model, it will be require to use two seperate Generic Machines CPU block, one configured with the generic machine model option and the second configured with the PMSM option.

Number of Machines: In the General tab, the number of machines (up to 4 for Generic Machine mode, up to 2 for PMSM modes) can be selected.

Solver Time Step [Ts(sec)]: Time step of the FPGA solver of the Generic Machines in seconds. It is 500ns by default.

Hardware Controller Name (OpCtrl): FPGA controller name that refers to the motor model bitstream (in OpCtrl or Oplnk block). It is usually 'OpCtrl'.

FPGA Clock Period [Tfpga(sec)]: The clock period of the FPGA. It is 5ns by default.

CPU Clock Period [Tcpu(sec)]: The time step of the CPU model. It is 20μs by default.

Communications Settings Automatic Configuration:This will enable the automatic setting of the communications ports. The *.conf file linked to the *.bin file selected in the OpCtrl Controller will be parsed and the communications settings will be set accordingly. If unchecked, the fields become modifiable for manual user settings.

Machine Core: If Communications Settings Automatic Configuration is enabled, Machine Core allows the selection of which machine defined in the *.conf to use for automatic configuration. To know more about how cores are defined inside a *.conf file, see: Conf File Writing Conventions.

Configuration Port Number: Data In/Load In/Data Out port: Number of communication ports from/to FPGA to send/receive solver data. Port numbers depend on the bitstream. See the associated bitstream *.conf file to get the right port numbers. These parameters should be updated at every firmware update.

The description keys to look depend on the selected block mode:

• For Generic machine mode, the description key used is IM_SM

• For PMSM Vdq mode, the description key used if PMSMVDQ

Depending on the number of machines selected in the General tab, corresponding tabs will appear. Each tab has Configuration, Electrical, Mechanical, Resolver, and Encoder Parameters sections:

Machine Type: In the dropdown list of each tab, the machine and its rotor type can be selected as Synchronous Machine Round Rotor/Salient-pole Rotor or Doubly-fed Induction Machine or Induction Machine with Squirrel-cage when the Generic machine mode is selected in the general tab. In PMSM mode, the machine parameter can be set as "Fixed Ld Lq values" for PMSM with salency simulation or "BLDC" for brushless dc motor emulation with trapezoidal back emf.

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• Configure Machine Inputs: This button opens a voltage mapping table for each machine as follows:

• Input Name shows the stator and rotor (if applicable) supply voltage names for the selected machine type and rotor type,

• Input Source gives the option of selecting between different available eHS sources,

• Measurement Index is to assign the eHS indexed measurement to the corresponding machine input.

   

  For different types of machine voltage mapping, refer to the info below:

• For Synchronous Machine, the stator voltages and field rotor voltage should be mapped,

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• For Doubly-fed (Wound Rotor) Induction Machine, the stator voltages and rotor voltages should be mapped,

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• For Induction Machine with Squirrel-cage Rotor, PMSM or BLDC, the stator voltages should be mapped.

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Configure eHS inputs: This button opens a current mapping table for each machine as follows:

• Input Name shows the stator and rotor (if applicable) current names for the selected machine type,

• Input Source gives the option of selecting between different machine types, either PMSM or generic machine,

• Measurement Index is to assign the eHS current measurement to the corresponding machine.

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Same as Machine Inputs, eHS inputs mapping could be different for each type of machine.

• For Synchronous Machine, stator currents and field rotor current should be mapped,

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• For Doubly-fed (Wound Rotor) Induction Machine, stator currents and rotor currents should be mapped,

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• For Induction Machine with Squirrel-cage Rotor, stator currents should be mapped.

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• For PMSM or BLDC, stator currents should be mapped. Since the model supports only balanced mode, only 2 currents needs to be injected to the eHS.

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For more info about the number of current measurements for each type of machine, refer to the following link: Generic Machine Outputs

For measurement index, eight current measurements channels are assigned for each machine, while up to the first six of them could output current values during real-time simulation.

Refer to the following table for the right signal indexes of the Generic machine outputs to the eHS, SM represents for Synchronous Machine.

Refer to the following table for the right signal indexes of the PMSM VDQ outputs to the eHS.

Notes: Ic current is not available for coupling eHS with PMSM VDQ model since the model supports balanced mode only.

Synchronous Machine with Round Rotor: This configuration is used for dynamic modeling of a Round Rotor Synchronous Machine, which models stator, field, and up to three damper windings one on the D-Axis (Kd) and two on the Q-axis (Kq1 and Kq2). All the rotor parameters, including the field and damper windings, are referred to the stator identified by a prime sign. By choosing open-winding option, the model has the option of having neutral point connection for the star-connected stator winding. The mask and electrical parameters of a Round Rotor Synchronous Machine are presented as follows:

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Synchronous Machine with Salient-pole Rotor: This configuration is used for dynamic modeling of a Salient-pole Rotor Synchronous Machine, which models stator, field, and up to two damper windings one on the D-Axis (Kd) and one on the Q-axis (Kq1). All the rotor parameters, including the field and damper windings, are reffered to the stator identified by a prime sign. By choosing open-winding option, the model has the option of having neutral point connection for the star-connected stator winding. The mask and electrical parameters of a Salient-pole Rotor Synchronous Machine are presented as follows:

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Induction Machine with Squirrel-Cage Rotor: This configuration is used for dynamic modeling of a Squirrel-cage Induction Machine, which models the stator winding and squirrel-cage rotor. All the rotor parameters are reffered to the stator identified by a prime sign. By choosing open-winding option, each stator induction can be access allowing wie with neutral or delta connection on the stator side. The mask and electrical parameters of a Squirrel-Cage Induction Machine are presented as follows:

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