Ship 220V single-phase AC intelligent power distribution device based on high-frequency chopper technology
A single-phase AC, high-frequency chopping technology, which is applied in the direction of emergency protection circuit devices, circuit devices, and AC network circuits for limiting overcurrent/overvoltage, and can solve the difficulty of increasing multi-channel load management and the inability to realize short circuits Quick protection of load automation management and other issues, to achieve the effect of intelligent power distribution and load automation management, reliable power distribution, and broad application prospects
Inactive Publication Date: 2018-07-24
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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[0059] The present invention will be described in detail below in conjunction with 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 those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0060] The functional 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 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.
[0061] A 220V sing...
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The invention discloses a ship 220V single-phase AC intelligent power distribution device based on high-frequency chopper technology. The device is mainly formed by a power switch, a buffer circuit, avoltage and current detection and conditioning circuit and a drive circuit and the like, can quickly identify operating conditions of load side short circuit, impact and overload and the like, can eliminate short circuit effect in microsecond time when the load side short circuit occurs, and can also suppress load current till impact disappears in the microsecond time when large current impact appears at the load side. Besides, the power distribution device can also monitor operation states of the corresponding power distribution branches in real time, transmits operation parameters and faultinformation and the like to a superior monitoring system through a CAN network, and meanwhile, receives a switch command sent by the superior monitoring system. The power distribution device has theadvantages of no contact, no arc, no noise and quick response and the like, can realize overall intelligence of a ship 220V power distribution system.
Description
technical field [0001] The invention belongs to the field of intelligent power distribution for ships, in particular to a 220V single-phase AC intelligent power distribution device for ships based on high-frequency chopper technology, especially a hardware circuit structure and control strategy method for a 220V DC intelligent power distribution device system for ships . 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 no contact, no arc, no noise, fast response, small electromagnetic interference, long life, high reliability, It has the advantages of intelligently distinguishing load characteristics and being convenient for computer remote control. [0003] In the marine field, traditional devices such as relays, circuit breakers, and fuses are still mainly used for power distribution. The ...
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IPC IPC(8): H02J3/00H02H3/093H02H9/02H02H1/00
CPCH02H1/0084H02H1/0092H02H3/093H02H9/02H02J3/0073
Inventor 章建峰杨祯王文彬戴训龙邵晓华
Owner SHANGHAI MARINE EQUIP RES INST