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SEMIS - SEMICONDUCTOR SIMULATION TOOL
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High power semiconductor applications are highly complex and, to reduce prototyping, require
thermal loss evaluation prior to a detailed circuit analysis to find the best possible semiconductor for customized settings and conditions. More than 35 topologies are listed according to application fields or grouped as VSC, CSC and DC-DC converters.
By selecting the topology circuit, the list of definable settings is indicated, enabling the highest flexibility in the definition of the
system parameters.
To start the simulation, circuit parameters are defined according to the user specification with significant flexibility enabling the simulations to be adapted to customer needs. With the selection of one or more Hitachi ABB Power Grids products, the system is ready for analysis.
The thermal impedance path, conduction and switching losses of each element of the topology as well as the control strategy are considered
for the calculation of junction temperatures.
This reveals critical elements or thermal paths enabling optimizations with the initial approach.
The simulator uses Jacobian steady-state analysis with the Plexim Plecs software to calculate the on-state and dynamic power losses, as well as the resulting thermal variations of semiconductors.
If junction temperatures exceed the permissible limits, alert messages are generated to ensure a safe operating area for the specific semiconductor.
Detailed results are displayed as graphs, indicating the thermodynamic and electrical static behavior of each power semiconductor. With the phase voltage and current, the combined converter output is indi- cated. For each element, the current load indicates the switching.
For detailed analysis, semiconductor specific para- meters are tabulated, enabling numerical analysis
of each element and parameter for conduction and switching power losses and junction temperatures. Critical elements with the highest thermal load are discovered rapidly, leading to efficient optimization in relation to cost efficiency, power losses and cooling system. For verification of the system efficiency,
the converter power effectiveness and the system efficiency are indicated. This reveals the power loss influence of the applied semiconductors in combina- tion with the control strategy. By comparing multiple products and parameter combinations, the influence of varying parameters is revealed.
By providing an efficient and reliable product analysis according to customer requirements,
a tailor-made selection of Hitachi ABB Power Grids products can be made with ease. For customer simulations with more specific topologies and control strategies, the model’s data is available in PLECS format for download from Hitachi ABB Power Grids’ website. This enables simulation to the highest customization and adaptation of control strategies.
Simulations exceeding the capabilities of the online SEMIS tool and for simulations of higher complexity, please contact your Hitachi ABB Power Grids sales agent or Hitachi ABB Power Grids Semiconductors for further support.