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Showing 1 to 10 of 10 for “"DC circuit breakers"”.
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Insulation-Constrained Design of Power Electronics Converters and DC Circuit Breakers
… (LV) and medium-voltage (MV) direct current (DC) distribution systems for a variety of applications. Power electronics converters and DC circuit breakers (DCCBs) are the key components of a DC system and are hence the focus of this work. The combination of growing power density requirements …
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Supercapacitor-assisted Arc Management (SCA2M) technique for DC circuit breakers in low-voltage applications
Direct Current (DC) circuits are gaining popularity due to their compatibility with renewable energy. However, their development is hindered by the lack of mature DC protection, such as circuit breakers. Unlike alternating current (AC), DC lacks natural zero-crossing points, making arc extinction …
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Design, Simulation, and Hardware Construction of a 600 W Solid State DC Circuit Breaker for the DC House Project
<p>DC circuit breakers must be able to arrest overcurrent conditions to prevent electrical equipment and wiring from causing building fires or other hazards from occurring. With more DC renewable sourced structures such as Cal Poly’s DC House, an inexpensive and reliable protection system is …
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Investigating DC circuit breaker service life
… methods to extend the service life of DC circuit breakers using inductive voltage spike mitigation techniques aimed at reducing electric arcs during switching operations. Unlike AC systems, DC lacks a natural zero-crossing which results in large transient voltages that accelerate switch …
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Control of an H-bridge modular multilevel converter for reliable operation of DC transmission systems
… can be used to enhance the transient response of DC transmission systems. The schemes enable H-bridge MMC cell capacitor voltages to be regulated independent of the DC link voltage in a DC transmission system, and also permit operation with variable DC link voltage, down to zero voltage, with full …
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Analysis in circuit breaker performance requirements for high-voltage DC networks
… region. Large scale, multi-terminal high voltage dc networks may offer a solution to these issues, and modern voltage source converters have a small enough footprint to be located on offshore platforms. However, during dc faults these suffer from high currents and the system is unable to transfer …
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Hybrid Modular Multilevel Converter Family and Modular DC Circuit Breaker for Medium-voltage DC (MVDC) Applications
… electronics-based voltage conversion techniques, DC grids, and distribution systems have gained significant interest. These systems offer advantages such as improved power quality, efficiency, and flexibility. Medium-voltage DC (MVDC) applications, including shipboard, railway systems, …
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DC fault protection in HVDC system and the impact on AC frequency response
… over long distance and in many applications, HVDC transmission systems become a more preferable choice compared to conventional HVAC systems. Thus, the reduction of conventional synchronous generators in the system coupled with the increase of DC connections reduces system inertia and weakens …
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Improvement in control and gain aspects of impedance source inverters and converters
… spectrum of electric power conversions from DC-AC (e.g. inverters), to phase and frequency conversion (AC-AC) in a wide range of applications. A wide variety of topologies and control methods using different impedance source networks have been presented in the literature to overcome the …
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Control and operation of HVDC connected offshore windfarm with particular emphasis on faults and black start
High voltage direct current (HVDC) technology has been identified as a preferred choice for long-distance offshore wind power transmission. However, compared with conventional onshore networks, the dynamic behaviour and operation of power electronic based offshore network is significantly …