Modified Z-Source DC Circuit Breaker With Enhanced Performance During Commissioning and Reclosing

Raghavendra, Venkata; Banavath, Satish Naik; Sreekanth, T.

doi:10.1109/tpel.2021.3092773

Cited by 33 publications

(4 citation statements)

References 22 publications

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“…By adding a semi-controlled device in the breaker, manual tripping is initiated, and an artificial fault current with a large magnitude can be induced comparatively with less loss than an SCR in the conduction path. A brief comparison of bidirectional SZSCB proposed in [24,62] with the new design presented in [63] states that, while commutation of thyristor, a spike in current may appear due to reverse recovery. With this current spike in input, the coordination of the circuit breaker might be affected.…”

Section: ) Series Z -Source Circuit Breakermentioning

confidence: 99%

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An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

Abdullah,

Sumathi

2023

IEEE Access

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In the advent of recent developments in a higher efficiency Direct Current (DC) system, the DC microgrid proves to be a permissible future to match the load demand with distributed power generation. The distribution of the DC power system benefits more than the Alternate Current (AC) power system, and due to recent developments, many researchers focus on DC microgrid. DC microgrid system has the advantage of direct interfacing with Renewable energy sources (RES) and energy storage systems (ESS), making the system highly efficient and distinct. Since the protective devices used in AC power systems do not support DC applications, there are challenges in designing and implementing a proper protection device for DC microgrid, which includes the breaking of fault current and the rapid response in handling fault current, capability to overcome the fault and cost of implementing. Unlike traditional circuit breakers that work with a fixed voltage source, Z-Source Breakers are capable of interrupting current in systems with variable voltage sources, making it appropriate for applications involving renewable energy sources, microgrids and energy storage systems. These breakers use a unique Z-Source network to provide enhanced flexibility and reliability in managing electrical faults in modern power grids. This study intends to analyses the recent growth in the impedance-based DC circuit breaker and DC microgrid's fault characteristics.

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Section: ) Series Z -Source Circuit Breakermentioning

confidence: 99%

“…OF IMPEDANCE BASED CIRCUIT BREAKER TOPOLOGIES[63,74,77] This article has been accepted for publication in IEEE Access. This is the author's version which has not been fully edited and content may change prior to final publication.…”

mentioning

confidence: 99%

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

Abdullah,

Sumathi

2023

IEEE Access

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“…In the Ref. [87], the issues suffered by ZSCBs are presented: (1) a high starting current in the main thyristor SCR. (2) unwanted power flow in the load during the commissioning and reclosing of ZSCBs.…”

Section: Z-source: the New Generation Of Sscbsmentioning

confidence: 99%

Circuit Breakers in Low- and Medium-Voltage DC Microgrids for Protection against Short-Circuit Electrical Faults: Evolution and Future Challenges

et al. 2021

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This paper deals with circuit breakers (CBs) used in direct current microgrids (DCMGs) for protection against electrical faults, focusing on their evolution and future challenges in low voltage (<1.5 kV) and medium voltage (between 1.5 kV and 20 kV). In recent years, proposals for new circuit-breaker features have grown. Therefore, a review on the evolution of circuit breakers for DCMGs is of utmost importance. In general terms, this paper presents a review concerning the evolution of circuit breakers used in DCMGs, focusing on fuses, mechanical circuit breakers (MCBs), solid-state circuit breakers (SSCBs), and hybrid circuit breakers (HCBs). Their evolution is presented highlighting the advantages and disadvantages of each device. It was found that although modern circuit breakers have begun to be commercially available, many of them are still under development; consequently, some traditional fuses and MCBs are still common in DCMGs, but under certain restrictions or limitations. Future challenges that would allow a successful and adequate implementation of circuit breakers in DCMGs are also presented.

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“…In Z source-based DCCB [24], [25], current commutation is done using the impedance network; however, it has the drawback of automatic actuation if there is even a slight load variation. The issues of high starting current and unwanted power flow are rectified using a parallel snubber branch which dissipates the trapped energy in the inductor [26]; nevertheless, in the Z source, load current flows through the semiconductor device, so conduction losses are significant [27]. Lazzari et al [28] implemented a Low Voltage hybrid DCCB, which addresses the problem of twice the fault current in the circuit elements.…”

Section: Introductionmentioning

confidence: 99%

A Modular Novel Bidirectional Hybrid DC Circuit Breaker Topology for More Electric Avionics

Agrawal

Umanand

2023

Preprint

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A DC-based power distribution system is adopted in the architecture for more electric aircraft (MEA) and all electric aircraft (AEA). The paper proposes a bidirectional Direct Current circuit breaker (DCCB) based on coupled inductor capable of interrupting a short circuit current in few tens of microseconds. The proposed topology is a hybrid circuit breaker that provides arc-less current disruption in the primary circuit. The breaking operation is based on the current reflected in the primary winding from the auxiliary resonant circuit (commutation module). In the proposed converter, the time for circuit breaking is significantly reduced using a current-fed high gain converter, which acts as a boost converter to charge the pre-charging capacitor. The same switches employed in the current fed converters are used in commutation; hence, fewer components are needed. The switches are operated so that the pre-charging capacitor voltage profile is unipolar. A modular approach for DCCB is presented that uses the commutation circuit as a module. With the modular approach of breaking the current in the primary circuit, the voltage and current rating of the DCCB can be enhanced. The presented DCCB with modular commutation circuits can interrupt the current flow in the opposite direction, which makes it a bidirectional DCCB. A detailed simulation study is conducted in Matlab Simulink environment, further experimentally the hardware results are validated for breaking the current in 270V/10A and 540V/5A DC systems.

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Modified Z-Source DC Circuit Breaker With Enhanced Performance During Commissioning and Reclosing

Cited by 33 publications

References 22 publications

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

Circuit Breakers in Low- and Medium-Voltage DC Microgrids for Protection against Short-Circuit Electrical Faults: Evolution and Future Challenges

A Modular Novel Bidirectional Hybrid DC Circuit Breaker Topology for More Electric Avionics

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