A transient magnetic pulse induction current transfer circuit and its application method
A technology for transferring circuits and magnetic pulses, which is applied to emergency protection circuit devices, circuit devices, and emergency protection circuit devices for limiting overcurrent/overvoltage, and can solve the problem of DC circuit breakers absorbing huge energy and current zero-crossing difficulties, etc. Problems, to achieve the effect of bidirectional current transfer, low voltage and low cost, and improve operational reliability
Active Publication Date: 2017-12-29
XI AN JIAOTONG UNIV
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Problems solved by technology
The difficulty of DC breaking is mainly reflected in two aspects: one is that DC current does not have a natural zero-crossing point like AC current, so it is very difficult for the current to cross zero, and it is necessary to artificially create the current zero-crossing point; absorb huge amounts of energy
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[0025] The following detailed description is merely exemplary in nature and not intended to limit application and uses. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. Unless expressly stated to the contrary, the word "comprise" and its various variations should be understood as implying the inclusion of stated elements but not excluding any other elements.
[0026] In one embodiment, the present disclosure discloses a transient magnetic pulse inductive current transfer circuit, the circuit comprising a main current circuit, a transfer current circuit and an access port;
[0027] The main current circuit is used to continuously carry current or conduct current temporarily;
[0028] The transfer current circuit is used to bear the current transferred from the main current circuit;
[0029] The access port is used for connecting with ex...
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The invention discloses a transient magnetic pulse induction type current transfer circuit and the use method thereof. The transfer circuit comprises a main current circuit and a transfer current circuit. The transfer current circuit comprises a mutual inductor. The use of the transfer current circuit can quickly complete the transfer of current and achieve current restriction or current cut-off. At the same time, the capacitor in the second circuit is isolated from the direct current system, which obviously reduces the voltage level and the size of a charging unit, and improves the transfer reliability. The application method of the invention can realize various engineering application functions, such as a direct current circuit breaker, an alternating current quick circuit breaker, and an alternating current and direct current limiter.
Description
technical field [0001] The disclosure belongs to the field of electronic circuits, and in particular relates to a transient magnetic pulse induction current transfer circuit and a use method thereof. Background technique [0002] With the continuous improvement of the capacity of the DC power system, the DC power transmission and transformation technology is booming, and at the same time, higher requirements are placed on the stability and safety of the system. Among the various faults that may occur in the power system, short-circuit faults are the most harmful to the power grid and have a high probability of occurrence. Since the peak value of the short-circuit current of the DC system will rise to a very high level in a short period of time, the removal and protection of the short-circuit fault is an important issue for the development of the DC system. The difficulty of DC breaking is mainly reflected in two aspects: one is that DC current does not have a natural zero-c...
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IPC IPC(8): H02H9/02H02H3/08
CPCH02H3/08H02H9/025
Inventor 吴翊杨飞吴益飞纽春萍荣命哲胡杨
Owner XI AN JIAOTONG UNIV