Plexim Supports Working from Home

Many PLECS users are currently working from home to help contain the further spread of COVID-19. However, it is not always possible to access existing company and university licenses. To allow you to continue using PLECS without restrictions, we invite you to request a free temporary PLECS license tied to your computer. Please enter “Home-90” in the comment field of your request to receive a license with extended validity of 90 days.

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We wish you all the best for these challenging times and hope that the situation will improve soon.



Simulation Software for Power Electronics

PLECS® is the tool of choice for high-speed simulations of power electronic systems. It is available in two editions: PLECS Blockset for seamless integration with MATLAB®/Simulink®, and PLECS Standalone, a completely independent product.

What's New in Version 4.4

  • Code Generation for Multi-tasking Systems
    The PLECS Coder has been enhanced with the capability to generate code for multi-tasking systems.
  • Enhanced User Interface
    The Scope and the XY-Plot let you display a legend on top of the plots for easier identification of signals without having to show the data widget. Subsystems can now be easily converted to configurable subsystems.
  • New Library Components
    The component library has been extended with a From File block, continuous and discrete PID controllers, continuous and discrete filters and new power modules such as the 3-Level Half Bridge (T-Type).
  • And More
    Please see the Release Notes for more new features.

Application example: HIL simulation of MMC

The PLECS RT Box is a modern real-time simulator that can be programmed and operated from PLECS. With its 32 analog and 64 digital input/output channels and its 1 GHz dual-core CPU it is a versatile processing unit for both real-time hardware-in-the-loop (HIL) testing and rapid control prototyping.

HIL simulation of MMC with four RT Boxes

The arrangement above is used for real-time simulation of a grid-connected modular multi-level converter (MMC) with four interconnected RT Boxes. Each phase leg of the MMC consisting of 10 half-bridges has its own slave controller and is simulated on a separate RT Box. The fourth box at the top simulates the passive filters and the grid. The RT Boxes are interconnected via high-speed serial links on the back to exchange simulation data and synchronize the simulation step. All boxes run with a time step of 3 μs.

The controls are implemented on four C2000 microcontrollers, which are connected to the front of each RT Box via LaunchPad Interface boards. The master controller at the top communicates with the slave controllers via an SPI bus.

"Even though being new to PLECS and the PLECS RT Box, I was able to successfully develop the simulation of a PFC stage with two boost cells and the controls implemented in C code in only one day."
— Prof. Dr. Radu Bojoi, Power Electronics Innovation Center, Politecnico di Torino