Three-phase crossed winding type coupling device for wireless power transmission of rotary equipment
A technology for wireless power transmission and rotating equipment, applied in circuit devices, electrical components, etc., can solve problems such as damage to power supply cables, overheating, power supply interruption, etc., to avoid serious contact wear, wide application prospects, and improve flexibility.
Inactive Publication Date: 2018-10-12
HARBIN INST OF TECH
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Problems solved by technology
[0003] Rotating equipment cannot directly use cables for power transmission, because the cables will be entangled when they are rotating, which will damage the power supply cables and cause power interruptions
At present, rotating equipment mainly relies on conductive slip rings for power transmission, and slip rings are powered by brush contact. Therefore, after working for a long time, the contact surface is severely worn, the contact resistance becomes larger, and local overheating occurs, resulting in poor contact or contact separation. It greatly reduces the reliability of the power supply of rotating equipment and reduces the service life of slip rings, which may seriously cause major accidents, and the replacement of slip rings will consume a large cost
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[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0040] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0041] like figure 1 As shown, a three-phase cross-wound coupling device for wireless power transmission of rotating equipment includes a power supply magnetic core and a power supply coil. The power supply magnetic cores are square bar magnetic cores, and the power supply magnetic core It includes a plurality of primary side magnetic cores 1 and a plurality of secondary side magnetic cores 2, and the plurality of primary side magnetic cores 1 and the plurality of secondary side magnetic cores 2 are all skeleton cores formed according to a circular array structure, the primary side magnetic core 1 and the secondary side magnetic core 2 of each position of the skeleton type magnetic core...
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The invention provides a three-phase crossed winding type coupling device for wireless power transmission of rotary equipment. The device comprises a power supply magnetic core and a power supply coil, wherein the power supply magnetic core is a square strip-shaped magnetic core; the power supply magnetic core comprises a plurality of primary side magnetic cores and a plurality of secondary side magnetic cores, wherein the primary side magnetic cores and the secondary side magnetic cores are of framework type magnetic core structures defined according to a circumferential array; the power supply coil comprises a primary side coil and an auxiliary side coil, wherein the primary side coil and the secondary side coil form a coaxially nested three-phase crossed winding coil; the three-phase crossed winding coil is formed by three crossed winding coils which are alternately arranged at intervals; the framework type magnetic core structure defined by the primary side magnetic cores is connected to a fixed end, and the framework type magnetic core structure defined by the secondary side magnetic cores is connected to a rotating end; and fixed power supply equipment is formed to be in a rotary equipment power supply mode, and the rotary power supply equipment is formed to be in a fixed equipment power supply mode through the opposite settings. The device is safe and reliable, and the stable wireless transmission of electric energy within a 360-degree rotation range can be realized.
Description
technical field [0001] The invention belongs to the technical field of wireless power transmission, and in particular relates to a three-phase cross-wound coupling device for wireless power transmission of rotating equipment. Background technique [0002] Due to the wireless power transmission technology getting rid of the dependence of traditional wired power transmission on wires and other electrical conductors, it avoids various problems caused by the traditional wire direct contact power supply method, such as friction, aging, contact resistance, sparks, etc., and meets special needs. The actual needs of electric occasions are a new form of electric energy transmission, which has the characteristics of non-contact, safety and reliability, and is suitable for some special background applications. [0003] Rotating equipment cannot directly use cables for power transmission, because the cables will be entangled when they are rotating, which will damage the power supply cab...
Claims
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Login to View More IPC IPC(8): H02J50/12H02J50/40
CPCH02J50/12H02J50/40
Inventor 朱春波马冰卿宋凯魏国逯仁贵董帅
Owner HARBIN INST OF TECH