A bidirectional bridge DC solid state circuit breaker

A solid-state circuit breaker and bridge-type technology, applied in the field of topology structure of new bidirectional bridge DC solid-state circuit breaker, can solve problems such as increasing circuit complexity, and achieve the effects of low cost, simple topology structure and small energy demand

Active Publication Date: 2022-04-26
NORTHWESTERN POLYTECHNICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the bridge-type solid-state DC circuit breaker proposed by the Chinese patent (CN201810122692.5) has the advantages of simple switching process and short time, it requires an additional control circuit, which increases the complexity of the circuit

Method used

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  • A bidirectional bridge DC solid state circuit breaker
  • A bidirectional bridge DC solid state circuit breaker
  • A bidirectional bridge DC solid state circuit breaker

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Embodiment Construction

[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0021] In the description of the present invention, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be connected or detachable, unless otherwise clearly specified and limited. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be ...

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Abstract

The invention discloses a bidirectional bridge type DC solid-state circuit breaker. The circuit breaker topology includes a first thyristor, a second thyristor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a second Inductance can be applied in DC microgrid to realize short-circuit fault protection of the system. The topology of the circuit breaker is simple, which not only meets the requirements of common ground in practical applications, but also realizes bidirectional flow of energy, and can realize bidirectional protection of DC system , while reducing the use of power electronic devices and reducing on-state losses.

Description

Technical field: [0001] The invention belongs to the field of DC solid-state circuit breakers, and in particular relates to a novel topological structure of a bidirectional bridge-type DC solid-state circuit breaker. Background technique: [0002] With the continuous development of DC microgrid, its application scope is also expanding. Therefore, higher requirements are put forward for the steady-state operation and safety protection of DC microgrid. The circuit breaker is an important device to ensure the stable operation of the power system. The DC circuit breaker also plays an important role in the protection of DC transmission, providing a strong guarantee for the reliable operation of the DC system. [0003] With the rapid development of power electronic devices, especially semiconductor devices, the all-solid-state DC circuit breaker using power electronic devices as the main switch has received extensive attention due to its advantages of rapid fault isolation and hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/087
CPCH02H3/087
Inventor 李伟林陶育菲王恒江雪王雨峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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