Simulation of Switching Converters on the Level of Averaged Voltages and Currents
Researchers propose a novel simulation method that simplifies complex power converter analysis using averaged circuit models.
Electrical engineers Aleksandra Lekić and Predrag Pejović have introduced a novel simulation algorithm for switching power converters, detailed in their arXiv preprint (2604.18814). The core innovation is a shift from traditional, computationally intensive switch-level simulation to a more efficient averaged-model approach. By applying the "switching cell" concept and using quasi-steady-state and linear ripple approximations, the algorithm reconstructs instantaneous voltage and current waveforms without simulating every rapid switching event. This method is versatile, covering converters operating in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM), which are fundamental to modern power supply design.
The researchers demonstrated the algorithm's practical application by successfully simulating the three basic DC-DC converter topologies: buck, boost, and buck-boost. They also extended its use to a flyback converter, which required a slight generalization of the core switching cell concept. This work, which has a journal reference from 2014, provides a formalized and accessible framework for a technique that can significantly accelerate the design and analysis phase of power electronics. By reducing computational load, it allows engineers to iterate designs faster and analyze system behavior under various conditions more efficiently than with brute-force, cycle-by-cycle simulations.
- Algorithm uses averaged circuit models and a "switching cell" concept to bypass simulating every switch cycle.
- Validated on core converter types (buck, boost, buck-boost) and extended to flyback converters for broad applicability.
- Supports both continuous and discontinuous conduction modes, covering the full range of standard power converter operation.
Why It Matters
Enables faster, more efficient design of power supplies for everything from consumer electronics to electric vehicles.