The Power of DSIM

DSIM is easily hundreds to thousands of times faster than any other simulation tool on the market.

Physical switch models with non-ideal switch transitions, non-linear capacitors, parasitic bus inductances, etc can also be simulated without causing the simulation time to exponentially increase as is what happens in other tools.

Watch this DSIM overview video for a brief introduction.

Rethink What You Know About Microgrid Simulation

The largest microgrid simulated with DSIM so far has been a 1200 switch 10 unit microgrid where the inverters were defined as cascaded H-bridge MMCs. 150ms of simulation with DSIM took 2:22 minutes, the same system in PSIM would have taken 138 days (4.6 months).


Read more about microgrids below.

Forget Simulation Bottle Necks

Motor drive simulations can quickly become very complex and simulation times often become the bottle neck of the development process. With DSIM the simulation time for your motor drive application will decrease exponentially.


Read more about motor drives below.

Get results in a few minutes by using the DSIM tool.

Since DSIM can easily handle many hundreds to thousands of switches, it makes sense that it can also easily handle very fast switching. With GaN and SiC devices pushing switching speeds in the 10s or 100s of MHz, even simple converters can take a very long time to simulate with traditional tools. Adding in a physical switch model with traditional tools will just slow things down further. Not the case with DSIM!

Automation & Scripting

A quick simulation with a regular offline simulator may take a second or two, but if the simulation is required to be run 1000 times through various combinations of component tolerances and device operating scenarios those seconds will quickly add up into multiple hours. Get results in a few minutes with DSIM, drastically reducing the iteration and design time of your projects.


DSIM Applications

 

Microgrid

The current meta for the simulation and design of microgrids requires the use of expensive real-time hardware or the use of average models in a tool like PSIM. Both approaches require compromise and abstraction from the desired system. Real-time simulation hardware is expensive and limits things like switching speed, the number of switches, machine models, etc. to maintain real-time fidelity. The offline approach with average models or simplified sub-systems can hide fundamental underlying issues.

The largest microgrid simulated with DSIM so far has been a 1200 switch 10 unit microgrid where the inverters were defined as cascaded H-bridge MMCs. 150ms of simulation with DSIM took 2 minutes 22 seconds, the same system in PSIM would have taken 138 days (4.6 months).

DSIM Microgrid
DSIM Motor Drive

Motor Drives

Motor drives are typically long simulations. There is no easy way to avoid this because there are two time constants that are opposite to each other. The fundamental frequency of the motor drive, which defines the electrical/mechanical frequency relationship, combined with the switching speed requires a small timestep and long simulations for the motor to reach the desired torque and shaft speeds. With the efficiency boost and power handling boost provided by multi-level inverters the number of switches required to simulate is also increasing. Add in the need to understand the switching transient, parasitic interactions, and deadtime, an engineer will easily require a very small time step which will quickly push simulation lengths into hours. With DSIM you’ll be done in a few minutes.

High-Frequency Converters

Since DSIM can easily handle many hundreds to thousands of switches, it makes sense that it can also easily handle very fast switching. With GaN and SiC devices pushing switching speeds in the 10s or 100s of MHz, even simple converters can take a very long time to simulate with traditional tools. Adding in a physical switch model with traditional tools will just slow things down further. Get results in a few minutes by using the DSIM tool.

200 kHz Resonant Converter
Script Example

Automated Test Scenarios and Scripting

A quick simulation with a regular offline simulator may take a second or two, but if the simulation is required to be run 1000 times through various combinations of component tolerances and device operating scenarios those seconds will quickly add up into multiple hours. Get results in a few minutes with DSIM, drastically reducing the iteration and design time of your projects.


DSIM offers three powerful options

 

– Only ideal switches
– Limit of 15 switches
– C block not included
– Limits to scripting functions

 

– Incl. non-ideal switches
– Limit increase to 50 switches

 

– Unlimited
– No restrictions

Business Benefits
  • Get faster to market by using your design time more efficiently
  • What used to take hours/days/weeks to simulate, now takes seconds or minutes
  • Get from product idea to prototype without the risk and waste of time and money
  • More can be done with simulation (more complex systems, more realistic behavior of circuit, more details w/o loss of sim speed)
Feature Packed
  • Quickly simulate not only parts but also the whole system working together
  • Large numbers of switches (1000s) and higher switching speeds supported
  • Seamlessly integrated with your known and trusted PSIM software
  • Automatically, simulate 1000s of test scenarios with built-in scripting capability

How does DSIM work?

DSIM uses a Discrete State Event-Driven (DSED) simulation engine and an innovative modeling approach that fully exploits the characteristics of power electronics systems.

This combination allows for an unprecedented and unparalleled simulation speed that is several hundred or thousands of times faster than any existing offline simulation software out there.

Moreover, its ability to simulate large converter systems and at the same time switch transients is unique and ideally suited for large scale power converter systems, high power converter systems, microgrids, and any other system that is computation intensive.

In DSIM, the power electronics system is represented in blocks:

  • power circuit
  • control circuit

The power circuit usually consists of switching devices, RLC branches, and transformers. For the switching devices, DSIM uses pre-built converter switch blocks which are have optimized solve methods.

DSIM does support bi-directional switches, which should be used for things like switching in load or creating faults.

The control circuit must be an open-loop or a closed-loop digital control system. DSIM is not supporting s-domain control at this time.


Who is behind DSIM?

DSIM is a simulation software that was specifically designed for power electronics. The developers of this amazingly fast simulation tool are members of collaborative teams at Tsinghua University and DSIM Technology Co.

Powersim Inc. is the exclusive distributor of DSIM in North & South America, Hong Kong, Singapore, Africa, Australia, and New Zealand. Find other distributor info here.