Samsung Electronics Predicts Wireless Charging Performance Through System-Level Simulation
Engineers Analyze Efficiency, Stability, Coil Variation, and In-Band Communication Before Evaluating Physical Designs
“The introduction of this tool has significantly reduced the time required to derive optimized models for wireless charging systems, enabling us to concentrate our development capabilities on discovering new systems and designing core algorithms.”
Key Outcomes
- Evaluated charging efficiency and stability across circuit parameters, component tolerances, and coil samples
- Predicted output-voltage and frequency-response changes associated with wireless charging in-band communication
- Established a simulation workflow for evaluating higher power, new charging structures, and different device configurations
Mobile wireless charging systems contain interconnected power and control components whose performance can change with circuit parameters, component tolerances, coil characteristics, and operating conditions. To reduce repeated trial and error during development, engineers at Samsung Electronics created a simulation-based workflow for predicting charging efficiency, voltage, power, stability, and in-band communication behavior.
The team used Simscape Electrical™ to model the physical wireless charging network and Simulink® to implement the control logic. The seamless integration between the physical network and control model enabled engineers to perform closed-loop, system-level simulations in a single environment. They used sensors and simulation results to examine power at different stages and evaluate charging operation.
The workflow enabled the team to run multiple simulations while varying receiver capacitance, output current, transmitter and receiver inductance tolerances, and coil parameters imported from Excel®. Engineers also used MATLAB® code to apply parameter sets and extract simulation results. For wireless charging communication, the model predicted changes in output voltage and frequency response when the communication capacitor switched on and off.
The team also used Response Optimizer to derive circuit parameters for an efficiency target above 80%. Samsung Electronics plans to use Simscape Electrical to evaluate higher charging power, new charging structures, and compatibility across different devices.
