Two-Stage Switching Element Simulation for Temperature Accuracy
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Solution Overview
Problem
Simulating circuits with detailed switching element models increases computational time due to the need for accurate temperature calculations.
Innovation Solution
Implement a two-stage simulation approach using a simplified element model for pre-simulation to reduce computational load, followed by a detailed element model for main simulation to accurately calculate temperature and noise levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a detailed model of the circuit including the switching element is used in simulation, then the temperature calculation accuracy is improved, but the simulation time increases
Solution Approach 1:
The simulation process is divided into two distinct stages: a first simulation using a simplified circuit model to obtain drive signals, and a second simulation using a detailed circuit model to calculate temperature. This segmentation allows each stage to use the appropriate level of model detail, reducing overall computation time while maintaining accuracy where needed.
Solution Approach 2:
The first simulation using the simplified model is performed as a preliminary step to extract drive signals before conducting the second simulation. This preliminary action prepares necessary data in advance, allowing the detailed simulation to focus specifically on temperature calculation without redundant computations.
2Productivity
If a simplified element model is used in simulation, then the simulation time is reduced, but the temperature calculation accuracy decreases
Solution Approach 1:
Different levels of model detail are applied to different parts of the simulation process. The simplified model is used for obtaining drive signals where high accuracy is not critical, while the detailed model is used specifically for temperature calculation where accuracy is essential. This local differentiation of quality optimizes both efficiency and precision.
Solution Approach 2:
The simulation is segmented into two phases with different model fidelities. The first phase uses a simplified model for low-computation tasks, and the second phase uses a detailed model for high-accuracy temperature analysis. This segmentation allows the system to achieve high productivity overall while maintaining measurement precision where required.
3Measurement precision
If a detailed model is used for the entire simulation process, then accurate temperature and noise level calculations are achieved, but the computational load increases significantly
Solution Approach 1:
The computational process is segmented into two simulations with different complexity levels. The first simulation with the simplified model handles the computationally intensive drive signal generation, while the second simulation with the detailed model focuses specifically on temperature and noise analysis. This segmentation reduces the overall computational load while maintaining accuracy for critical parameters.
Solution Approach 2:
Drive signals are calculated in advance using the simplified model before the detailed simulation. This preliminary calculation of drive signals separates the computationally heavy task from the detailed analysis, reducing the computational load during the temperature and noise calculation phase while maintaining measurement precision.
Data Source
AI summary
In an arithmetic method according to an embodiment, executing an arithmetic operation includes performing first simulation when a control target is driven in a first drive pattern using a simulation model in which an element model is a model in which electrical characteristics of a switching element are resistance characteristics, extracting first time-series data of a drive signal output from a control model in the first simulation, and performing second simulation when the control target is driven in the first drive pattern using the simulation model in which the control model is a model from which the first time-series data is output along a time series and in which the element model is a model in which power loss including switching loss that occurs when a state of the switching element is switched can be output.