Radiation Hardened Latching Current Limiter for Space Applications

Dias, Agnaldo Vieira; Manea, Silvio; Moreira, Juliano; Chacon, Ronald Hassib Galvis; Santos, Angela Alves dos; Finco, Saulo; Seixas, L. E.

doi:10.1109/aero55745.2023.10115918

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…With the Bode diagram of the closed-loop system, you can calculate the open-loop transfer function using (3). By knowing the compensator, you can determine the behavior of the plant and current measurement (H(s) and K(s) in Fig.…”

Section: Calculation Of the Transfer Functionmentioning

confidence: 99%

Designing the Control Loop for Latching Current Limiters (LCL)

Dias,

Pomilio,

Finco

2023

2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP)

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DC power systems find extensive applications in the automotive and aerospace industries, where there is a growing demand for higher voltage and current levels. Additionally, the utilization of DC power systems in microgrids is growing continuously. This increased adoption enhances the need for more efficient protective mechanisms to ensure reliable and secure operation.The latching current limiter (LCL) plays a crucial role in DC systems by serving as a protective barrier against overload. It functions as a safeguard, preventing excessive current from causing harm to sensitive circuitry and components. Implementing an LCL offers essential protection for these components, leading to extended lifespans and enhanced overall system reliability.A significant challenge in LCL development concerns the designing of the control loop. Traditional methods often rely on linearization and approximations, which can yield poor results. An alternative approach for control loop design involves practical methods, using the real circuits.This work introduces some experimental approaches to design the LCL control loop. The signal injection technique is used, in pulsed and continuous mode. The K-factor method is employed to define the compensator. The results are presented and compared, demonstrating the effectiveness of the proposed solution.

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Section: Calculation Of the Transfer Functionmentioning

confidence: 99%

Designing the Control Loop for Latching Current Limiters (LCL)

Dias,

Pomilio,

Finco

2023

2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP)

Self Cite

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Latching Current Limiter SEE Susceptibility from Heavy Ions

Dias,

Manea,

Added

et al. 2024

2024 IEEE Aerospace Conference

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Limitation of Initial Surge in Latching Current Limiters (LCL)

Dias,

Pomilio,

Finco

2023

2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP)

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DC power systems are widely used in the automotive and aerospace industries, with increasing requirements for voltage and current levels. Furthermore, there is a growing trend in utilizing DC power systems in microgrids. This increased adoption requires the development of more efficient protection mechanisms for reliable and secure operation.The latching current limiter (LCL) is essential in DC systems, designed to protect them against overload. It acts as a safeguard, preventing excessive current from damaging sensitive circuitry and components. Implementing an LCL provides critical protection for components, extending their lifespan and enhancing overall system reliability.One issue concerning the LCL's operation is the initial surge. When an overload occurs, a peak current can flow through the circuit. This current could generate negative effects such as spikes in the DC power bus, interference and other undesirable consequences.This work presents some methods to reduce or to eliminate the LCL switch's initial surge current. Traditional methods (reduction in VGS and use of output inductor) and new solutions (source inductor, impedance multiplier and predictive control) are explored. The results are compared and each method's advantages and disadvantages are show.

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Radiation Hardened Latching Current Limiter for Space Applications

Cited by 3 publications

References 8 publications

Designing the Control Loop for Latching Current Limiters (LCL)

Designing the Control Loop for Latching Current Limiters (LCL)

Latching Current Limiter SEE Susceptibility from Heavy Ions

Limitation of Initial Surge in Latching Current Limiters (LCL)

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