With the rapid advancement of the semiconductor industry, new types of power electronic devices are continuously emerging, increasing the demand for accurate and efficient device modeling. This has created new challenges in developing specialized modeling tools. In response, this paper presents a lightweight and dedicated device modeling tool built upon open industry-standard simulation source code, offering a flexible and scalable solution for device modeling tasks.
The simulation module is designed to integrate seamlessly with existing simulation frameworks, leveraging the widely used SPICE model as a foundation. The parameter extraction process involves analyzing the input equivalent circuit based on SPICE syntax and exporting relevant interfaces to the spice3f5 simulation kernel. This approach ensures compatibility and efficiency in the simulation process.
2.1 Interface Design
To enable smooth communication between the developed tool and the spice3f5 source code, we conducted a thorough analysis of the source code structure. Based on that, we compiled and generated the spice3f5.dll file, which exports key API functions for input and output operations. These functions facilitate interaction between the tool and the simulation engine, as illustrated in Table 1.
[Image: Interface function table]
2.2 SPICE Syntax Parameter Extraction
Accurate parameter extraction is fundamental to effective device modeling. Without precise model parameters, circuit simulations cannot be performed accurately. Therefore, the tool parses the user-provided netlist using SPICE syntax to extract component values and model definitions.
To support repeated simulations with modified parameters, the netlist is pre-processed, retaining only the valid simulation content. During the first traversal, sub-circuit and model definitions are identified and stored as objects. A second traversal is then conducted to locate instance statements, extract module names, and link them to their respective sub-module objects. This enables dynamic expansion of the netlist during simulation.
3. Graphic Display Module
Visual comparison between simulated and measured data is crucial for refining models. The Smith impedance chart plays a key role in this process, especially for high-frequency circuits. It provides a graphical representation of load impedance and reflection coefficient, making it easier to analyze and adjust model parameters.
3.1 Smith Impedance Map
The Smith chart consists of constant resistance and reactance circles, allowing users to visualize impedance characteristics effectively. To implement this, specific arrays define the values for the constant resistance and reactance arcs. For example:
Double dRadius[] = {0.0, 0.2, 0.5, 1.0, 2.0, 5.0};
Double dArc[] = {-5.0, 2.0, -1.0, -0.5, -0.2, 0.2, 0.5, 1.0, 2.0, 5.0};
In GDI graphics programming, drawing these elements requires defining the bounding rectangle and arc start points. The coordinates are normalized to the unit circle, and scaling is applied based on the view settings.
3.2 Expansion Function
To enhance usability during the modeling process, the tool includes zooming and memory functions. Users can magnify specific areas of the Smith chart for detailed analysis. The system maintains two zoom parameters: the center point and scale factor. When zooming, the display area is refreshed, and a bitmap is created in memory to efficiently render the enlarged section. This allows for smooth transitions between different views and easy restoration of previous states.
4. Conclusion
This paper introduces an object-oriented approach to device modeling, integrating it with the spice3f5 simulation framework. By enabling modular reuse and rapid prototyping, the tool significantly reduces development time and cost. It offers valuable insights for the design of specialized device modeling tools, demonstrating the potential of combining open standards with flexible software architecture.
According to the difference in the number of output phases, it can be divided into single-phase and three-phase AC power supplies.
The output power of single-phase adjustable AC power supply ranges from 500VA to 200KVA, the output power of three-phase adjustable AC power supply ranges from 3KVA to 600KVA, the output voltage is divided into 0 ~ 150Vac, 150 ~ 300Vac, and the output frequency is adjustable from 45Hz to 70Hz with 50/60Hz fixed frequency output.
Through the friendly operation panel, you can read the output data such as output voltage, output current, output power, power factor, etc., providing accurate data records for your test, and can add RS485 interfaces as standard, following the MODBUS-RTU international communication protocol, which can realize remote control and operating status monitoring of the power supplies.
This series of adjustable AC Power Supplies have comprehensive protection functions, such as: over voltage, over current, over temperature and short circuit protections, which can protect the AC power supplies and DUT from damages. At present, it is mainly used for Various electrical appliance manufacturers conduct grid simulation tests on electrical appliances according to the voltage/frequency requirements of different countries. Imported electrical appliances are used for the domestic demand for variable voltage and frequency conversion, as well as various AC motors and AC transformers.
Variable Frequency AC Power Supplies
The VFP series AC Power Supplies are high precision, high efficiency, low THD adjustable AC power supplies that converts the input mains power through AC→DC→AC conversion, and gives a pure sine wave AC output with adjustable voltage & frequency within a certain range. Also known as Variable Frequency AC Power Source.
According to the difference in the number of output phases, it can be divided into single-phase and three-phase AC power supplies.
The output power of single-phase adjustable AC power supply ranges from 500VA to 200KVA, the output power of three-phase adjustable AC power supply ranges from 3KVA to 600KVA, the output voltage is divided into 0 ~ 150Vac, 150 ~ 300Vac, and the output frequency is adjustable from 45Hz to 70Hz with 50/60Hz fixed frequency output.
Through the friendly operation panel, you can read the output data such as output voltage, output current, output power, power factor, etc., providing accurate data records for your test, and can add RS485 interfaces as standard, following the MODBUS-RTU international communication protocol, which can realize remote control and operating status monitoring of the power supplies.
This series of adjustable AC Power Supplies have comprehensive protection functions, such as: over voltage, over current, over temperature and short circuit protections, which can protect the AC power supplies and DUT from damages. At present, it is mainly used for Various electrical appliance manufacturers conduct grid simulation tests on electrical appliances according to the voltage/frequency requirements of different countries. Imported electrical appliances are used for the domestic demand for variable voltage and frequency conversion, as well as various AC motors and AC transformers.
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Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com