PLECS (Piecewise Linear Electrical Circuit Simulation) is a software tool for system-level simulations of electrical circuits developed by Plexim.[1] It is especially designed for power electronics but can be used for any electrical network. PLECS includes the possibility to model controls and different physical domains (thermal,[2] magnetic[3][4] and mechanical[5]) besides the electrical system.
Most circuit simulation programs model switches as highly nonlinear elements. Due to steep voltage and current transient, the simulation becomes slow when switches are commutated. In most simplistic applications, switches are modelled as variable resistors that alternate between a very small and a very large resistance. In other cases, they are represented by a sophisticated semiconductor model.
When simulating complex power electronic systems, however, the processes during switching are of little interest. In these situations it is more appropriate to use ideal switches that toggle instantaneously between a closed and an open circuit. This approach, which is implemented in PLECS, has two major advantages: Firstly, it yields systems that are piecewise-linear across switching instants, thus resolving the otherwise difficult problem of simulating the non-linear discontinuity that occurs in the equivalent-circuit at the switching instant. Secondly, to handle discontinuities at the switching instants, only two integration steps are required (one for before the instant, and one after). Both of these advantages speed up the simulation considerably, without sacrificing accuracy. Thus the software is ideally suited for modelling and simulation of complex drive systems[6] and modular multilevel converters,[7] for example.
In recent years, PLECS has been extended to also support model-based development of controls with automatic code generation. In addition to software, the PLECS product family includes real-time simulation hardware for both hardware-in-the-loop (HIL) testing and rapid control prototyping.[8]
^Jost Allmeling (July 27, 1999). "PLECS-piece-wise linear electrical circuit simulation for Simulink". Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475). pp. 355-360 vol.1. doi:10.1109/PEDS.1999.794588. ISBN 0-7803-5769-8. S2CID 111196369.
^"Thermal Simulation". Plexim.
^Allmeling, Jost; Hammer, Wolfgang; Schönberger, John (July 30, 2012). "Transient simulation of magnetic circuits using the permeance-capacitance analogy". 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL). pp. 1–6. doi:10.1109/COMPEL.2012.6251786. ISBN 978-1-4244-9373-9. S2CID 8589735.
^"Magnetics". Plexim.
^"Mechanical Systems". Plexim.
^De Doncker, Rik W.; Pulle, Duco W.J.; Veltman, Andre (2020). Advanced Electrical Drives (2 ed.). Springer International Publishing. ISBN 978-3-030-48976-2.
^Sharifabadi, Kamran; Harnefors, Lennart; Nee, Hans-Peter; Norrga, Staffan; Teodorescu, Remus (2016). Design, Control, and Application of Modular Multilevel Converters for HVDC Transmission Systems. Wiley-IEEE Press. ISBN 978-1-118-85156-2.
^Allmeling, Jost (November 21, 2019). "Model Continuity: From Offline Simulation to Real-Time Testing".
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providing simulation software for power electronic systems. The product, PLECS, is used for product development in power electronics. The area of application...
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catfish, also known as suckermouth catfish, armoured catfish or simply 'plecs' or 'plecos' Family Callichthyidae: armoured catfish, includes the genera...
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on close inspection. As this fish grows the spots get smaller. Like most plecs this species is primarily herbivorous though will eat dead animals. In the...
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to 2017, airing 171 episodes over 8 seasons. Kevin Williamson and Julie Plec adapted the TV series from L.J. Smith's novel series of the same name. Some...
catfishes. These fish are commonly known as sailfin armoured catfish or sailfin plecs, especially in the aquarium trade. Pterygoplichthys is derived from the...
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2017. The episode is written by Kevin Williamson and Julie Plec, and directed by Julie Plec. A one-hour retrospective aired before the finale. As Stefan...
popular, selfish and a "mean girl". However, the show's producers, Julie Plec and Kevin Williamson, felt that it wasn't the direction they wanted to go...
airing on The CW. The series were developed by Kevin Williamson and Julie Plec, and based on characters who appeared in the original novel series, The Vampire...
J. Smith and was developed for television by Kevin Williamson and Julie Plec. The series ran from September 10, 2009, to March 10, 2017, on The CW. The...
2013). "Hozier | Interview". GoldenPlec. Archived from the original on 2 November 2014. "Oxegen 2010". GoldenPlec. Archived from the original on 25 February...
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Panaque nigrolineatus, the royal panaque, royal plec, or royal pleco, is an herbivorous freshwater armored catfish native to Brazil, Colombia and Venezuela...
circuit matrix can be solved with Gaussian elimination. Software such as the PLECS interface to Simulink uses piecewise-linear approximation of the equations...
and critical failure. A reboot television series, co-developed by Julie Plec, debuted on September 15, 2022 on Peacock. It was canceled after one season...
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