DC-DC Converter Parameter Scaling for Fast LV Voltage Response

The patent applies parameter changes by determining characteristic parameters of the DC-DC voltage converter through transfer function modeling and scaling. The system calculates optimal parameter values (such as leakage inductance, switching frequency, and control gains) that enable the converter to achieve high dynamic performance without requiring a large LV-side energy store, thus resolving the contradiction between reduced installation space and maintained power availability.

The patent employs the copying principle by replicating the dynamic performance characteristics of an HV/LV DC-DC voltage converter onto a DC-DC voltage converter with lower power and voltage classes. Through transfer function modeling and parameter scaling, the system copies the dynamic response behavior (step response, frequency response) from the high-power converter to the low-power converter, enabling the smaller converter to achieve substantially identical dynamic performance despite its reduced power class.

The patent applies preliminary action by pre-calculating and storing transfer functions and their scaled versions before actual operation. The system determines characteristic parameters offline through modeling and simulation, then uses these pre-determined parameters for real-time control. This approach eliminates the need for complex real-time calculations during operation, allowing the use of simple digital control with delay times or dead times while maintaining high dynamic performance through the pre-optimized parameters.