24V direct-current intelligent power distribution device for ship based on high-frequency chopping technology
A high-frequency chopping, intelligent power distribution technology, applied in circuit devices, emergency protection circuit devices, automatic disconnection emergency protection devices, etc., can solve the problem of increasing the difficulty of multi-channel load management and the inability to realize automatic management of short-circuit fast protection loads. and other problems, to achieve the effect of realizing intelligent power distribution and automatic load management, reliable power distribution, and broad application prospects.
Pending Publication Date: 2018-07-06
SHANGHAI MARINE EQUIP RES INST
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Problems solved by technology
[0003] In the marine field, traditional devices such as relays, circuit breakers, and fuses are still mainly used for power distribution. The advantages of this conventional power distribution method are mature technology and stable device operation. Automatic management, taking the gG type fuse as an example, only when nearly ten times the rated current flows, the fuse will respond in milliseconds, and when the fuse is blown due to a short circuit, the fuse must be replaced manually, which greatly increases It is difficult to manage when there are multiple loads in the centralized power supply mode, so it is imperative to adopt an intelligent power distribution system based on an intelligent power distribution device
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[0050] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.
[0051] The principle block diagram of the intelligent power distribution device provided by the present invention is as follows: figure 1 As shown, its main circuit topology is as follows figure 2 As shown, the digital control circuit in the main control circuit adopts a digital control circuit based on DSP (Digital Signal Processing, digital signal processing) and CPLD (Complex Programmable Logic Device, complex programmable logic device), wherein CPLD is mainly used for logic judgment.
[0052] Specifically...
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The invention discloses a 24V direct-current intelligent power distribution device for a ship based on a high-frequency chopping technology, which mainly comprises a power switch, a buffer circuit, avoltage and current detection circuit, a driving circuit and the like, and can quickly resolve the load side short circuit, impact and In the case of overload and other conditions. When a short circuit occurs on the load side, the short circuit effect can be eliminated within the microsecond stage time, and when a large current impact occurs on the load side, the load current can be suppressed until the impact disappears. In addition, the power distribution device can monitor the running state of the corresponding distribution branch in real time, and transmit operation parameters, fault information, etc. to the superior monitoring system through the CAN network, and simultaneously receives the switch command sent by the superior monitoring system. The power distribution device has the advantages of no contact, no arc, no noise, fast response, etc., and can realize the comprehensive intellectualization of the 24V power distribution system of the ship.
Description
technical field [0001] The invention belongs to the field of ship intelligent power distribution, in particular to a 24V DC intelligent power distribution device for ships based on high-frequency chopper technology, in particular to a hardware circuit structure and a control strategy method of a ship 24V DC intelligent power distribution device system. Background technique [0002] The intelligent power distribution device is a solid-state power distribution device that integrates the conversion function of the relay and the circuit protection function of the circuit breaker. It has the advantages of intelligent differentiation of load characteristics and convenient computer remote control. [0003] In the field of ships, traditional devices such as relays, circuit breakers, and fuses are still mainly used for power distribution. The advantages of this conventional power distribution method are that the technology is mature and the devices work stably. Automatic management,...
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IPC IPC(8): H02H3/087H02H3/093H02H3/027H02H3/02H02H1/00
CPCH02H1/0084H02H3/025H02H3/027H02H3/087H02H3/093
Inventor 章建峰王文彬杨祯邵晓华戴训龙
Owner SHANGHAI MARINE EQUIP RES INST