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Control of Power Electronic Converters

D26.10 - Decoupled Closed-Loop Control for Regenerative Testing of a 15-kW Bidirectional Synchronous-Rectifier Buck Converter

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
The regenerative test approach offers an efficient method for verifying high-power bidirectional DC–DC converters by alleviating the power demand on the source and reducing energy consumption during burn-in testing. Conventional implementations often rely on open-loop operation to avoid instability, which limits control flexibility. To address this, a decoupled closed-loop control strategy is proposed that reduces the original multi-input multi-output (MIMO) dynamics to an equivalent single-input single-output (SISO) system, thereby simplifying controller design. The plant model is derived and validated through simulations, enabling the design of a simple PI controller with optimized loop gain characteristics. At last, two 15-kW bidirectional buck/boost modules under the regenerative test setup are tested with the proposed decoupled closed-loop control strategy.