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When you do include a non-ideal switch in your simulations, you need to ensure that the results resemble reality. Also, the addition of many small L and C values combined with high-frequency ringing can cause numerical instability so you need to ensure that you use a robust solve engine, like PSIM or DSIM.


A non-ideal switch model should simulate a device transition similar to how the real hardware will work. However, the model should not be so complex that the simulation takes forever to complete with questionable numerical stability. We have models that provide meaningful results without simulation stability issues.

Read more about Non-ideal Switches below.


We recommend the use of ideal switches for most simulations. However, the detail of the actual switch transition can make or break your power converter, literally. You need to observe voltage overshoot, coupling through the miller capacitance, snubber design, switching losses, and interactions with parasitic inductors and capacitors throughout the circuit. A non-ideal switch also has a realistic dv/dt & di/dt during turn on/turn off; this is critical to properly analyze transients in long cables.


Switching losses can be a tough problem for simulation tools to solve. To simulate switching losses properly an accurate non-ideal switch transition is required, which can require a nanosecond or smaller timestep to properly resolve. This very small timestep is not very practical if you want to look at losses for one cycle of the fundamental at 60Hz for a PFC; the simulation would be very long to solve.


MOS1 is backwards, so right now the output voltage will just be the input minus the voltage drop from the body diode. It is, however, the correct type (you should be using an N channel FET, not P). Typically you need a high-side gate driver with a bootstrap capacitor to use one though. I recommend operating the converter in open loop at 50% duty cycle. You can then confirm if the switching action is working correctly and you should get 6V on the output. If that works, then the problem lies in your compensator values.


I made an adjustment to my arrival patterns, and now my simulation won't run. I click run and nothing happens. It just seems to be frozen and I can't do anything. I've attached my model. I don't know if it's a bug or something else, but any help I can get would be great.same-day-surgery-model-7-29-16-no-specials.fsm


Power supplies are the backbone of the electrified world. Converter requirements, advancements in semiconductor devices, magnetics, topologies, and control techniques require dynamic, accurate, and purpose-built power electronics simulation tools.


The motor control design suite allows non-experts and experts to quickly get a fully defined motor drive working. This can be easily modified and integrated into bigger system simulations to understand the impact of a real motor drive on system efficiency and performance. We also introduce how to use Altair Activate to link PSIM with other solvers from Altair (like MotionSolve) to provide more realistic mechanical models.


- Utilize Scripting Automation to define different simulation attributes and compile interpreted results. This could save you days of back and forth with your colleagues and many hours of manual simulation setup.



PSIM
 is an Electronic circuit simulation software package, designed specifically for use in power electronics and motor drive simulations but can be used to simulate any electronic circuit. Developed by Powersim, PSIM uses nodal analysis and the trapezoidal rule integration[2] as the basis of its simulation algorithm. PSIM provides a schematic capture interface and a waveform viewer Simview. PSIM has several modules that extend its functionality into specific areas of circuit simulation and design including

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