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660 results about "Source structure" patented technology

Large-size direct type LED backlight source and preparation method

The invention discloses a large-size direct type LED backlight source and a preparation method. The backlight source structure comprises an edge emission type LED, a metal basal plate and a lower wall casing; the edge emission type LED comprises a conical half-reflecting semi-permeable mirror, an LED chip, packaging resin and an LED lamp holder; a plurality of light reflecting bowls are punched on the metal basal plate and are evenly distributed on the metal basal plate, the lower wall casing is in a frame-shaped structure and is arranged at the lower end of the metal basal plate, a hollow cavity is formed between the lower wall casing and the metal basal plate, the lower surface of the metal basal plate and the upper surface of the lower wall casing are provided with fine structures in the hollow cavity, fine structures at the lower ends of the light reflecting bowls are connected with the fine structure at the upper surface of the lower wall casing, and a liquid absorption core is formed; and support columns are arranged between the adjacent light reflecting bowls, have equal heights with the light reflecting bowls and are connected with the fine structure at the upper surface of the lower wall casing, and a liquid absorption core is formed. The invention provides an LED backlight source structure compromising the performance and the energy consumption under the precondition of low cost and realizing the lightness and the thinness of a large-size LED and a manufacturing process.
Owner:SOUTH CHINA UNIV OF TECH

Co-bus winding opening permanent magnet motor system with one side controllable and zero sequence current suppression method thereof

The invention discloses a co-bus winding opening permanent magnet motor system with one side controllable and a zero sequence current suppression method of the co-bus winding opening permanent magnet motor system with one side controllable. The winding opening permanent magnet motor system is of a co-direct-current power source structure, the zero sequence current can be suppressed by designing a proportion resonant controller, a full-control converter and a non-control converter are adopted for the system, the capacity of the system is increased while cost is reduced, the system only relates to one direct-current power source which does not need to be isolated, only a control algorithm is modified for zero sequence current suppression, and the hardware cost of the system does not need to be increased. Meanwhile, according to the zero sequence current suppression method, a current loop structure is designed directly based on zero sequence current detection, and the method is easy to control and high in stability. Compared with a traditional structure, the complexity of the system is reduced, cost is reduced, the capacity of the system is increased, meanwhile, under the condition that no hardware is added, the problem that permanent magnet counter emf contains third harmonics is well solved, the control method is simple, and the anti-jamming capability is high.
Owner:ZHEJIANG UNIV

Sending end power grid power source structure planning method considering local load peak regulation capacity

The invention relates to a sending end power grid power source structure planning method considering local load peak regulation capacity. A power source structure planning model is established in combination with various actual constraint conditions such as peak regulation constraints on the basis of considering wind and light storage peak regulation capacity and local load peak regulation capacity. The method comprises the following steps: establishing a power source structure planning model considering local load peak regulation capacity; obtaining a unit maintenance plan, considering to addthe power and local load peak regulation capacity of an energy storage wind power plant and a solar power station, and carrying out random production simulation of wind, solar energy, water, fire andpumping storage power generation; and obtaining hybrid particle swarm optimization to solve the power source structure planning model, and thus obtaining an optimal power source structure planning scheme. Compared with the prior art, the method has the advantages that users and electric automobiles are considered to serve as local load to participate electric power system peak regulation actively, the difference between peak and valley of the system can be reduced effectively and the difficulty of electric power system peak regulation is relieved.
Owner:国家电网有限公司西南分部 +2

Multi-source vacuum evaporation device having multi-layer radial type evaporation source distribution structure

The invention relates to a multiple-source vacuum coating device of a multiple-layer radiating type evaporator source distribution structure, and an operating mode of a substrate during the filming process. The system takes a medial axle of a filming vacuum chamber as a center, and effectively arranges more evaporator sources by adopting a two-layer or multiple-layer outward radiating evaporator source distribution method on the identical horizontal plane, to satisfy the requirements of the multiple-source in the multiple-layer part structure; simultaneously, the metal evaporator source is positioned at the position approximately vertical to a coating specimen stage, to remove the shadow effect generated during the metal costing process; the rotation of the substrate during the evaporating process, and the use of an independent small baffle plate and an masking plate of each sample in the sample base frame are matched, the uniform film manufacture of the larger-sized substrate not only can be realized, the preparation of a plurality of samples and a plurality of structures in the identical vacuum process but also can be realized, and the efficiency and the comparability of the result is improved; further, the multiple-layer distributing source structure can effectively utilize the space, the volume of the volume chamber body is greatly reduced under the condition of identical evaporating amount.
Owner:NANJING FANGYUAN GLOBAL DISPLAY TECH
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