| Abstract |
Real-time simulation fidelity of Dual-Active Bridge (DAB) converters based on the Associated Discrete Circuit (ADC) switch model is analysed in this work. The ADC switch model allows for computationally efficient simulation, as it results in a fixed circuit topology, regardless of the switch states. The constant conductance parameter of the ADC switch model should be selected to minimize the virtual power losses and artificial oscillations introduced by the model, with the aim of achieving a high degree of simulation fidelity. However, a constant conductance parameter that minimizes virtual power losses may result in a low degree of simulation fidelity in terms of transformer current for DAB converters. To address this challenge, a Loss Compensation Algorithm (LCA) is utilized to minimize virtual power losses, while a method to determine a suitable ADC switch model conductance parameter that meets a maximum error constraint of the transformer current is derived analytically. Time-domain simulation results of the DAB converter are provided for validation of the proposed method. |
