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  • Users: Phaneas
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  1. Phaneas

    Torque Tolerance of a FOC VFD

    Hello, we try to optimize the parameter set of a 2.2 MW Drive with field oriented control. We try to get the best result between reference torque of the control and actual torque measured at the motor shaft. We have tolerances depending of motor speed and amplitude of the torque of around +/-...
  2. Phaneas

    DC Link Capacitance

    Hello, I have to calculate the necessary dc link capacitance for a VFD. Does anybody know a good book or other documents how this is calculated. Couldn't find too much in the net. Thanks in advance.
  3. Phaneas

    Texas Instruments ads7869

    Hello, we are using a Texas Instruments ads7869 Analog to Digital converter chip for a VFD control. It is used to read the motor currents. The chip has also a D/A converter that makes a reference voltage for the overcurrent comperators. The value of this D/A converter changes its value from...
  4. Phaneas

    Water cooled rectifier

    Hello everybody, I have a water cooled rectifier, build as press pack. The rectifier is used in heavy enviromnet (shocks) and I had some leakage proplems with the ceramic colling plates. Now I want to change the supplier of the cooling plates. Does anybody now a supplier for ceramic cooling...
  5. Phaneas

    sope block does not work

    Hello, I am using MATLAB Version 7.0.0.19920 (R14) and Simulink Version 6.0(R14). Since a few days I have a problem, when I am opening the scope block in simulink. I get his message: Warning: Failed in SetDIBits, device does not support this operation (gle00000008) Out of Windows Resources...
  6. Phaneas

    Position of an Out- and Inputport

    Hello, i want to create a subsystem-block, which has an input- and an outputport at the upper side, and an input- and an outputport at the left side. Does anybody know a command to define the position of out- and inputports ?

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