Modeling and control of a new circuit to obtain hold-up time extension for electronic equipment in aircraft applications

López-Santos, Oswaldo; Urrego-Aponte, José Omar; Almansa-López, José David

doi:10.1109/esars-itec.2016.7841355

Cited by 1 publication

(1 citation statement)

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“…A first version of the proposed control operating on a BBBC in boundary conduction mode (BCM) was presented in Reference [18]. Only three operational modes, with some transitions defined between them, were identified, namely a charging mode, a standby mode, and a discharging mode.…”

Section: Introductionmentioning

confidence: 99%

Control of the Bidirectional Buck-Boost Converter Operating in Boundary Conduction Mode to Provide Hold-Up Time Extension

López-Santos

Urrego-Aponte²,

Tilaguy-Lezama

et al. 2018

Energies

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A hold-up time extension circuit (HTEC) is used to charge and discharge an auxiliary capacitor. This capacitor stores the energy required to extend the operation time of critical loads experiencing short duration failures (SDF) at the DC bus to which they are connected. This paper presents complete modeling and a control-wise approach to a parallel HTEC based on the bidirectional buck-boost converter, which operates in Boundary Conduction Mode (BCM) with a variable switching frequency. The circuit permanently regulates the voltage of the auxiliary capacitor as well as the voltage of the DC bus during SDF, which is uncommon in industrial versions of HTEC. Enforcing the operation in BCM allows a reduction in the size of the inductor in the converter without requiring additional control circuitry. The entire behavior of the proposed HTEC, in all its operation modes, was analyzed theoretically and validated using simulation and experimental results, showing the potential of the circuit to be used in real applications.

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Section: Introductionmentioning

confidence: 99%