Wireless energy obtaining low voltage power supply system based on electrified railway equipment
A technology for electrified railways and low-voltage power supplies, applied to electrical components, circuit devices, battery circuit devices, etc., can solve problems such as complex circuit structures, achieve high reliability, simple structure, and improve the overall reliability and information level.
Active Publication Date: 2017-05-24
EAST CHINA JIAOTONG UNIVERSITY
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Problems solved by technology
The structure of this patented circuit is complex, and from the perspective of energy acquisition, it needs to have an AC input source, that is, it needs to be connected with a cable to obtain energy, and then the transformer is used to isolate and complete non-contact power acquisition, which is not suitable for electrified railways under high voltage operation. energy gain
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Embodiment Construction
[0031] Embodiments of the present invention are further described in conjunction with the accompanying drawings.
[0032] figure 1 It is a schematic diagram of the working principle of electrified railway related equipment.
[0033] In the electrified traction section, in order to ensure that the traction current flows smoothly through the insulating joints, choke transformers are installed at the sending end and receiving end of the track circuit, and the track circuit equipment is connected to the track through the choke transformer and transmits signal information. The impedance of the choke transformer to the traction current is very small, but the impedance to the signal current is very large. The traction current flowing along the two rails is at the insulating joint of the track. Because the magnetic flux generated in the upper and lower coils is equal but opposite, The total magnetic flux is equal to zero, which has no effect on the signaling device of the secondary c...
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The invention provides a wireless energy obtaining low voltage power supply system based on electrified railway equipment. The wireless energy obtaining low voltage power supply system based on the electrified railway equipment comprises a non-tie cable isolated type electricity obtaining unit, a direct power conversion unit, a charging unit, an electric energy storage unit and a discharging unit. The wireless energy obtaining low voltage power supply system has the beneficial effects that the wireless electric energy obtaining is realized through the non-tie cable isolated type electricity obtaining unit arranged between two choke transformers; and a stable and reliable power supply load is formed through rectification and electric control; wireless energy obtaining is realized by fully utilizing the electrified railway equipment; tie cables are not needed; existing equipment does not need to be transformed; when an electrified locomotive passes, energy can be obtained; the system can work all weathers; power tie cables are not needed for power supply; the system is convenient to install, simple in structure and low in cost and has high reliability, little maintenance and strong practicability; and the system can improve the technical equipment capacity of electrified railways and the flexibility and safety of the railway system and has wide application prospect and market space.
Description
technical field [0001] The invention relates to a wireless energy-taking low-voltage power supply system based on electrified railway equipment, and belongs to the field of railway electric technology. Background technique [0002] Electrified railways need to properly monitor rails, subgrades, catenary and surrounding environments, and have communication capabilities. Especially, there are a large number of road sections with complex environments that require disaster prevention monitoring. Along the long railway line, although there are high-voltage power supply equipment including catenary, there is often no low-voltage power supply. Monitoring and communication equipment usually use low-voltage power supply, so such equipment cannot be connected, which greatly limits the further improvement and improvement of modern railway automation and informatization level. [0003] There are many ways to obtain power from non-grid power supply, and the more common ones are photovol...
Claims
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IPC IPC(8): H02J50/10H02J7/02H02J7/00
CPCH02J5/005H02J7/025H02J7/345H02J2207/20Y02T10/70
Inventor 马书研刘珺傅军栋徐晓玲
Owner EAST CHINA JIAOTONG UNIVERSITY