A Modified Hybrid DC Circuit Breaker With Reduced Arc for Low Voltage DC Grids

Ajmal, C. N. Muhammed; Raghavendra, Venkata; Naik, Satish B; Ray, Anindya; Krishnamoorthy, Harish S.

doi:10.1109/access.2021.3115456

Cited by 19 publications

(9 citation statements)

References 21 publications

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“…Performance of the proposed DC circuit breaker topology with the already existing HCB topologies reported in literature [13]- [16], [21]- [23] and [7] for LVDC application is discussed and a summary highlighting various performance indices is elucidated in Table 2. Though the circuit breaker topology reported in [7], has the current limiting capability, the and ZVS features are not possible.…”

Section: Comparison and Discussionmentioning

confidence: 99%

“…The same is not the case with the existing HCB topologies. • HCB [13], [14] and [16] have a similar limitation of allowing the fault current to flow through the load till the fault is completely interrupted. • HCB [13], [14] and [16] have to use PEM to cater for supplying fault current during the interruption process.…”

Section: Comparison and Discussionmentioning

confidence: 99%

“…1) The HCB topologies presented by [11]- [13] use power electronic modules (PEM) that are developed by using semiconductor devices. The PEMs are connected in parallel to the MCB, and the current commutation takes place through the fault/load.…”

Section: Introductionmentioning

confidence: 99%

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Bidirectional Hybrid DC Circuit Breaker With Zero Voltage and Current Switching for Radar Power System

Saminathan,

Banavath

et al. 2024

IEEE Open J. Ind. Applicat.

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This paper proposes a novel zero-voltage switching (ZVS) and zero-current switching (ZCS) based hybrid DC circuit breaker for a radar power system. Long-range radars demand huge power, in the order of hundreds of kW. Radar's phased array antenna houses a large number of electronic devices and works primarily on a DC power supply. Typically, military systems are required to have the highest operational reliability, as a result, electrical system protection plays a crucial role. A high power 310 V DC electrical power grid in radar carries hundreds of amperes of current under nominal operating conditions, results in significant fault current due to very low impedance, and demands a very fast fault interruption device. This paper proposes and demonstrates the complete operation of a hybrid DC circuit breaker topology for radar applications. The proposed DC circuit breaker employs a mechanical switch that carries the entire current during the nominal operating conditions, and a Power Electronic Module (PEM) connected in parallel helps in diverting the fault current from the main path. Fault current transfers to the PEM branch in a fraction of a second (5µs), which ensures faster load-side isolation. During the fault interruption process, mechanical switch contact opening experiences both ZVS and ZCS features, resulting in arcless operation, and also helps in faster contact separation. The ZVS and ZCS feature greatly improve the reliability of the mechanical switch. The proposed concept does not involve any capacitors and corresponding pre-charging circuits for the ZVS/ZCS features. The proposed DC circuit breaker is analyzed theoretically, and also by simulations in LTspice. Additionally, an experimental prototype with a DC system rating of 310 V -10 A is developed to experimentally validate the performance of the proposed breaker topology. The paper also presents a detailed design and comparative analysis, along with a discussion on the limitations of the proposed DC circuit breaker, and the scope for improvements.INDEX TERMS Current-limiting, high-speed current interruption, Hybrid DC circuit breaker, MCB, solidstate DC circuit breaker, radar power system.

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Section: Comparison and Discussionmentioning

confidence: 99%

Section: Comparison and Discussionmentioning

confidence: 99%

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Bidirectional Hybrid DC Circuit Breaker With Zero Voltage and Current Switching for Radar Power System

Saminathan,

Banavath

et al. 2024

IEEE Open J. Ind. Applicat.

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“…As a new generation of switch, vacuum circuit breaker (VCB) undertakes multiple tasks of bearing, breaking, control, isolation, and protection. It is not only the key equipment to protect the safe and stable operation of the system, but also the security guard of large‐scale interconnection network [1]. In recent years, as the leading product of medium and low voltage switches [2], VCB has accounted for more than 90% of the market in the field of power distribution, and has become an internationally recognized power equipment with both environmental friendliness and economy.…”

Section: Introductionmentioning

confidence: 99%

Multi‐Objective Optimization Design of Vacuum Interrupter Structure Based on Improved Artificial Jellyfish Search Algorithm

Dai

2023

IEEJ Transactions Elec Engng

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An improved multi‐objective optimization method based on artificial jellyfish search algorithm is proposed to solve the multivariable and multi‐objective optimization problem of vacuum interrupter with mutual coupling of structural parameters and mutual restriction of performance indexes. The finite element model of 40.5 kV/31.5kA vacuum interrupter is established. The structural parameters of seven important parts such as contact diameter and contact sheet thickness in vacuum interrupter are taken as optimization variables. The optimization objective is to maximize the longitudinal magnetic field strength and minimize the conductor resistance at the peak breaking short‐circuit current of vacuum interrupter. The artificial jellyfish search algorithm is improved on the population position initialization strategy and the population mutation cross‐update strategy. The Pareto front solution of the structural parameters of the vacuum interrupter is obtained by the joint simulation of finite element analysis and numerical calculation software. Finally, the multi‐parameter and multi‐objective optimization design of vacuum interrupter structure is realized. The comprehensive performance index is introduced into the optimal parameter group of jellyfish on the Pareto front. Under the constraint of weight variables, the optimal structural parameters of contact system are obtained. The axial magnetic induction intensity of the optimized vacuum interrupter contact is increased by 13.2%, and the conductor resistance is reduced by 25.4%. The comprehensive performance of vacuum interrupter is improved by 17.8%, and the stability and reliability of the power system are further improved. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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“…Upon reaching the MOV's breakdown voltage, it is triggered, enabling the current to flow through it and dissipate the stored energy effectively. Although the advantages compared to the aforementioned DCCB have been proven, few limitations are observed because of response times and current rating differences between FMS and SS [22,23]. Regarding the fault conditions, the contact separation of the FMS depends on the fault magnitude.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Bidirectional DC Circuit Breaker Capable of Regenerative Current Breaking for DC Microgrid Application

Hasan,

Hiung,

Kannan

et al. 2023

Electronics

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The direct current circuit breaker (DCCB) is extensively employed in DC microgrid applications to protect the network during faults. However, numerous DC converters are combined in parallel to form a DC microgrid, which creates a large network inductance. The grid stores energy during regular operation, which repels instantaneous current breaking, and this stored energy needs to be eliminated after current breaking. Conventional topologies use different energy absorption methods to dissipate the stored energy after breaking the current. In this paper, an efficient bidirectional DC circuit breaker (EBDCCB) topology is introduced to extract and reuse this energy instead of dissipating it. The proposed topology has bidirectional power flow capability to meet the requirements of DC microgrid applications as energy storage devices are frequently utilized. Furthermore, EBDCCB shows drastically improved performance in terms of current breaking time, voltage stress, regenerated average current, and energy recovery efficiency compared to the conventional DCCB topology. The mathematical modeling and sizing of the components used in the proposed EBDCCB are elaborately analyzed, and detailed performance testing is presented along with extensive PSIM software simulation. Additionally, an experimental investigation is conducted on a laboratory-scale 48 V/1 A prototype.

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A Modified Hybrid DC Circuit Breaker With Reduced Arc for Low Voltage DC Grids

Cited by 19 publications

References 21 publications

Bidirectional Hybrid DC Circuit Breaker With Zero Voltage and Current Switching for Radar Power System

Bidirectional Hybrid DC Circuit Breaker With Zero Voltage and Current Switching for Radar Power System

Multi‐Objective Optimization Design of Vacuum Interrupter Structure Based on Improved Artificial Jellyfish Search Algorithm

An Efficient Bidirectional DC Circuit Breaker Capable of Regenerative Current Breaking for DC Microgrid Application

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