How can I connect a Simulink wind-generator subsystem to the Simscape Electrical IEEE-39 Bus example? (Simulink-PS Converter + Controlled Voltage Source still won’t connect)

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Saraban
Saraban 2025-10-8，17:30
回答： Sabin 2025-11-5，20:33
I’m trying to replace one synchronous generator in MathWorks’ IEEE-39 Bus System (Simscape Electrical Specialized Power Systems, i.e., the blue-line network with powergui) with a simple wind-generator subsystem that I built in Simulink.
What I tried
  • Inside the wind subsystem I produce 3-phase voltages/currents (abc).
  • I used Three-Phase V-I Measurement to get Vabc/Iabc, then Simulink-PS Converter + Controlled Voltage Source to drive the network.
  • I attempted to connect that controlled source to the generator connection port (ConnGen10) / bus block at the corresponding bus (e.g., Bus30) in the 39-bus model.
Issues / errors
  • I get “Connection … is invalid because the ports are not compatible” when wiring my controlled source to the bus.
  • In other trials I hit a “Solver Configuration … block is in an algebraic loop” error.
  • Visually, my source has Simscape Foundation electrical conserving ports, while the IEEE-39 model uses Specialized Power Systems blue connectors and single “group” three-phase ports on generator subsystems.
What I’m trying to achieve
  • Replace one generator (e.g., Gen10@Bus30) with a wind source and run the standard 39-bus contingency/fault studies—keeping the rest of the example unchanged.
  • I’m happy to generate three-phase voltage/current from Simulink or from Simscape blocks; I just need the correct interface into the SPS network.
Questions
  1. What is the correct interface block/approach to inject a 3-phase source into the Specialized Power Systems bus from a Simulink/Simscape subsystem?
  • Do I need the Specialized Power Systems → Controlled Three-Phase Voltage Source (blue connectors) instead of the Foundation Controlled Voltage Source?
  • Or should I use one of the Simscape–SPS interface blocks (Current/Voltage Simscape Interface)?
  1. Is it possible to connect directly to the single blue “group” port (ConnGen##) used in the example generator subsystems, or should I expose explicit A-B-C ports and connect there?
  2. Any guidance on avoiding the algebraic-loop error when inserting the interface?
Environment
  • Simulink / Simscape Electrical (Specialized Power Systems).
  • Power system runs with powergui (Continuous).
  • (Release: please see “Release” field.)
I’ve attached screenshots of the generator subsystem, my wind subsystem, and the failing connection. A minimal model that reproduces the error is available if needed.
Thanks in advance for pointing me to the right interface and block set to make this connection work.

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回答（1 个）

Sabin
Sabin about 1 hour 前
It is not possible to directly connect blocks from the two technologies. Mixing two different technologies the solver may run into difficulties. Since R2024b, IEEE 39-Bus System example is available in Simscape Electrical and can be used as a starting point.
https://www.mathworks.com/help/sps/ug/ieee-39-bus-system.html

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