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Circuit with both energy conversion function and DC fault protection function

A DC fault protection technology, applied to emergency protection circuit devices, conversion equipment without intermediate conversion to AC, circuit devices, etc., can solve the problems of increasing the complexity of the DC power system and the impact on the stability of the DC power system, and achieve The effect of increasing the degree of integration, reducing the number and improving stability

Inactive Publication Date: 2019-07-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the complexity of the DC power system to a certain extent and has a certain impact on the stability of the DC power system.

Method used

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  • Circuit with both energy conversion function and DC fault protection function
  • Circuit with both energy conversion function and DC fault protection function
  • Circuit with both energy conversion function and DC fault protection function

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Embodiment Construction

[0013] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0014] Such as figure 1 As shown, the circuit is composed of semiconductor components IGBT1, diode 2, thyristor 3, transformer module 4, capacitor 5 and energy absorption circuits at both ends of the transformer coil. The emitter E of IGBT1 and the anode of thyristor 3 are connected in parallel at point 12, the cathode of thyristor 3 is connected in series with the first lead-out terminal of transformer module 4 at point 16, and the second lead-out terminal 17 of transformer module 4 is also used as the second lead-out of the circuit The terminal is connected to the load. The anode of the diode 2 and the return loop of the circuit are connected in parallel at point 14, the anode of the capacitor 5 and the third lead-out terminal of the transformer module 4 are connected in series at point 18, and the cathode of the capacitor 5 and the return loop of the circuit ...

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PUM

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Abstract

The invention relates to a circuit with both an energy conversion function and a DC fault protection function, which combines a buck circuit of an energy conversion circuit and a solid-state circuit breaker circuit of a DC protection circuit and can simultaneously realize the energy conversion function and the DC fault protection function. Compared an independent energy conversion device and DC protection device, the number of components is reduced, and the stability of the system is improved. The invention has the beneficial effects that the circuit can simultaneously play the role of energyconversion and DC fault protection, the number of components in the circuit is further reduced, the integration degree of the DC system is further improved, and the stability of the system is improved.

Description

technical field [0001] The invention belongs to the field of direct current power systems, and relates to a circuit with both energy conversion function and direct current fault protection function. Background technique [0002] Both energy conversion devices and protection devices are important components in DC power systems. Generally, the energy conversion device and the protection device in the DC power system are two independent devices to provide the functions of energy conversion and DC fault interruption respectively. This increases the complexity of the DC power system to a certain extent and has a certain impact on the stability of the DC power system. Contents of the invention [0003] technical problem to be solved [0004] In order to avoid the disadvantages of the prior art, the present invention proposes a circuit with both energy conversion function and DC fault protection function, which reduces the number of components in the DC power system and improve...

Claims

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Application Information

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IPC IPC(8): H02M3/10H02H3/087
CPCH02H3/087H02M3/10
Inventor 李伟林王雨峰
Owner NORTHWESTERN POLYTECHNICAL UNIV