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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: control theory,[3] electric motors,[4] photovoltaics[5] and wind turbines[6] PSIM is used by industry for research and product development and it is used by educational institutions for research and teaching[7] and was acquired by Altair Engineering in March 2022.[8]
PSIM has various add on modules, the full list and their descriptions can be found on the Powersim website. There are modules that enable motor drive simulation, digital control, and the calculation of thermal losses due to switching and conduction.[9] There is a renewable energy module which allows for the simulation of photovoltaics (including temperature effects), batteries, supercapacitor, and wind turbines. Additionally there are several modules which allow co-simulation with other platforms to verify VHDL or Verilog code or to co simulate with an FEA program. The programs that PSIM currently co-simulates with are: Simulink, JMAG, and ModelSim.
PSIM has a much faster simulation speed than SPICE based simulators based on its usage of the ideal switch. With the additional Digital and SimCoupler Modules almost any kind of logic algorithm can be simulated. Since PSIM uses ideal switches the simulated waveforms will reflect this, making PSIM more suited for system level studies rather than switching transition studies. Additionally, PSIM has a simplified interface compared to other simulators and as a result has a more intuitive interface.[10][11]
MOSFET and Diode Level 2 models were added in the version 10 release. These models allow the simulation of the switch transition, reverse recovery effects, and gate drive circuitry.[12] A comparison with a PSIM & SPICE model of the same device showed similar resulting waveforms with a comparable simulation speed given identical operating conditions.[13] PowerSim recently partnered with CoolCAD Electronics to add CoolSPICE, a SPICE based integrated circuit modeling and design tool, as a bundle option for the PSIM software package.[14] The advantage being that PSIM would then have the flexibility to be able to run SPICE based models and net-lists.
There are various licensing options available for PSIM. There is a free demo version which does not expire but is limited in component count and allowed circuit complexity. The standard/student version allows for the simulation of less complex circuits for a reduced cost. PowerSim does have educational licensing options, some are free, for institutions to address simulation requirements for research and for teaching.
PSIM provides engineers with the tools to perform circuit simulations used in motor drive or power electronics. It comes equipped with various modules, such as Spice, Motor Drive, or Digital Control, and it's mostly used by professionals in research fields.
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
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.
PSIM is actually three distinct programs combined into a single package. First, PSIM contains a PLC Ladder Logic editor that allows users to create and edit PLC programs using Allen Bradley PLC-2 family instructions. Secondly, PSIM emulates the scanning sequence of a PLC. When placed into the "RUN" mode, the users program is scanned and the appropriate I/O is updated just as would occur in an actual PLC. Thirdly, PSIM contains a number of animated simulations which respond accurately to the inputs, and outputs of the emulated PLC. A conveyor based filling line, Traffic intersection and Batch mixing simulations present life-like challenges for the student programmer.
The PSIM software includes a full-featured built-in PLC Emulator package that runs concurrently on the same computer with the Industrial applications software (simulations) described above. With a single keystroke, the user may toggle back and forth between the display of the animated process simulation and the Ladder Rung Program Editor of the emulated PLC.
The Program Editor is both user friendly and full-featured. Students may add, delete and modify program-rungs, branches and instructions using simple menu selections.
To test the new or modified ladder program, a single keystroke toggles the student back to the Process Simulation screen and places the PLC in the 'Run' mode. The process simulation will then react accurately to the student's newly programmed rungs which are constantly being scanned in the background by the PLC run-time emulator.
By incorporating the Editor and run-time scanning of a PLC into software capable of running and interacting with the industrial process simulations, PSIM provides a single computer hi-tech solution to Programmable controller student training, whether running on the network of a computer Lab, or on the users own laptop computer. The PSIM system allows a simple low-cost solution to PLC training while attaining superior student concept retention.
In all these cases you will need nano-photonic modelling to compare the performance of different structures. One of the most common concerns when deciding on a simulation method is how fast the calculations are. In other words, how long will it take to produce the data needed to make sound decisions.
Fast simulations have another advantage. Because configurations are calculated faster, the parameter space that can be explored becomes larger. Expanding the parameter space in turn improves the quality of the final design.
In this post we will explain the various choices that influence the calculation speed when designing meta-atoms, the sub-wavelength structures, which are the building blocks of metasurfaces. The nano-structures are designed to control the optical behaviour of the metasurface. Building a library of high performance meta-atoms with varied functionalities is essential to designing metalenses, functionalized diffraction gratings, holograms and filters. Many of the recommendations in this article apply to all kinds of optical simulations but we will focus specifically on metasurfaces.
There are several ways to speed up the calculations or more accurately prevent the simulation time from becoming impractically long. Combining these will get the most effective simulation setup. Generally these are the options:
In this article we will use a well known type of meta-atom as a reference structure to compare two commonly used simulation algorithms. The reference structure uses the geometric phase (also called Pancharatnam-Berry phase) which simultaneously converts polarization and controls the phase of the transmitted light. This shape has been widely used in metalens demonstrations for example[1], [2]. When using such a structure one of the first tasks is to select the appropriate structure height which maximizes the polarization conversion efficiency. As a reference we will tune the height of the structure and analyze which accuracy settings to apply in our simulations for RCWA and FDTD simulations.
Any full wave algorithm will have to discretize the structure, this is known as discretization or meshing. The stepsize of this discretization has a large influence on the simulation time and accuracy. In practice we have to determine the smallest resolution that still returns reasonably accurate results. In FDTD this is directly controlled by how many discretization steps are taken per micrometer. In RCWA this is indirectly controlled by the number of spatial frequencies (also called diffraction orders) used to represent the geometry. Both parameters have similar effects, increasing them will increase the accuracy but also slow down the calculation.
The data show that for meta-surface calculations the RCWA method returns results faster than FDTD at the same accuracy. This speed does come at a cost, RCWA is only suited for periodic structures while the FDTD method can also be applied to non-periodic structures. In practice meta-atoms are often optimized with periodic boundary conditions (this is known as the local periodic approximation). Simulating the non-periodic aspects is possible but requires very large simulation volumes with prohibitively long calculation times.
Finally the simulation time can be reduced (regardless of the method applied) by straightforward increases in computation power. Either by running on an on-premises powerful workstation or using cloud computing to flexibly scale the computation power.
This webinar covers the seamless workflow between PSIM's offline simulation and code generation and Typhoon HIL's real-time hardware-in-the-loop simulation. The tight integration will solve key challenges related to converter controls design and testing throughout the entire product lifecycle, from early controls design (PSIM) stage to real-time verification and testing (Typhoon HIL).
PSim (Pageant Simulator) 2.1 for Java, a teaching aid and research tool, is computer software that models the motion of pageant wagons during a simulation of medieval England's York Corpus Christi Pageant. Dots representing individual wagon-mounted plays move from station to station on a color map of the city, while the computer displays elapsed time. PSim comes with several default data sets that illustrate elements of different production theories, as developed by some of the modern scholars who have tried to reconstruct the medieval performance. The program was originally written for Windows 3.x, but a Java (web) version of PSim is now available -- although it may load very slowly on some systems. I suggest that you first visit the PSim screen shots, which cover in detail what PSim does.
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