Getting a locomotive running can be challenging. Fortunately I had helping hands who were able to make sense of it. Here is a quick overview of a simugraph setup for a basic AC powered locomotive. This is only for the traction part, brakes are not part of this example. Also this setup as shown here does not rely on overhead power, but you could fix that by using a Current Collector instead of Voltage Source (which in this example is set to 15000 Volt). Here you can see the connections between all nodes: Detail values for all nodes are in the attached zip file. All value converters, inverters and AC motors have the exact same configuration. The VF pattern of the inverter is that of the DB BR 101. Some of the nodes have additional red pins. Those pins are not there by default when you drag the node into a new graph, you can add them by selecting the node, then opening the Parameters window from the menu bar of the simulation asset, and adding the check mark for additional values in the Input/Output column. Not obvious connections are: Inverter Frequency goes into AC Motor Current Frequency, and Inverter VRatio goes into AC Motor Voltage Coefficient. The value converter is just there to convert from Speed at rail in m/s to rotor frequency, it uses a linear curve which is shown in ValueConverterCurve.png in the zip file. To control the throttle you have to set the Power Input value of the inverters to a value between 0.0 and 1.0, this would normally be done in the RVM directly (by using a Make SimulationComponentParameterReference node and a Set Simulation Node Parameter as Float by Ref node). Cheers!
So, since you're someone who presumably knows a bit about how Simugraph works, do you know if it's possible to add new types of nodes or are you stuck with the ones included with the editor?
To be honest I'm really just learning at this point, but I'm not aware of a way to create new node types. I guess that would have to go through DTG.
There are so many options with simugraph, I'm not sure what exactly is missing at this point. I know for a fact that you can add more node options on each of those "boxes" ( elements? can't remember the name ) because each of those elements have a lot of "sub options" that don't show by default, but they can be selected / activated once you open it. I just can't remember how or where it is done, I'm currently at work.
Stuff like a 4QC or a DC link capacitor would still be missing. Three level inverters are still missing too
How do the brakes work? How would I connect up for my brakes to work right. If I put into axle both the motor thing and brake pad, editor crashes as its not happy with it.
I would suggest you check out some of the pictures that exist of simugraph setups on the web, but I have no further details at this time. e.g. these: https://media-cdn.dovetailgames.com/2021/032021/03/Simugraph_Class31--1-.png https://dtl-ghost-storage-bucket-prod.storage.googleapis.com/2018/072018/07/185-2-Simugraph.png https://media-cdn.dovetailgames.com/2020/112020/11/TSW2_TGVD_WIP_0006.jpg https://dtl-ghost-storage-bucket-prod.storage.googleapis.com/2018/072018/07/143-Simugraph.png
Is anyone able to confirm if for them simugraph have brake pad and some sort of traction going into axle do you get a crash of the editor. How them examples show is how I did mine and I kept getting crash of editor and so.ethjng about assertion failure simulation pins
What are all the things necessary for getting a loco running? I am trying to make my first loco, and the graph above was very helpful. Still, How do I get my engine with like a throttle and stuff in it? And, how do I get trucks and couplers? Thanks, Ron
