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31results about How to "Does not affect quantity" patented technology

Method for voltage equalization of modularized multi-level converter for flexible direct current transmission system

ActiveCN104038060AReduce the computational burden of the programGood for balance controlDc network circuit arrangementsDc-dc conversionControl systemClosed loop
Provided is a method for voltage equalization of a modularized multi-level converter for a flexible high-voltage direct current transmission system. A control system of the modularized multi-level converter is utilized to perform voltage equalization control on the modularized multi-level converter. According to the voltage equalization method, a converter control protecting system CCP dynamically distributes the number of power modules needing to be connected by each power module grouping control system VGC through a closed loop regulator, a bridge arm current, a symbol judging link and a connecting module number feedback item according to the voltage average value of all the power modules of each bridge arm of the modularized multi-level converter and the voltage average value of the power modules corresponding to some power module grouping control system VGC. According to the method, distributed type balance control of voltage of the corresponding K power modules is achieved through the power module grouping control system VGC, and the converter control protecting system CCP only needs to dynamically calculates and distribute the number of the power modules needing to be connected by the each VGC.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Network interconnecting device for cache-free optical interconnection networks

The invention discloses a network interconnecting device for cache-free optical interconnection networks. The device comprises an electric controlling network node and an optical data network node. The electric controlling network node comprises a processing unit, and the optical data network node comprises a 2*2 optical switching unit, a 1*2 optical switching unit and a 2*1 optical switching unit, wherein the 2*2 optical switching unit comprises two micro rings, the 1*2 optical switching unit and the 2*1 optical switching unit respectively include one micro ring, the two input ends of the 2*2 optical switching unit are connected with an X- input port and a Y- input port respectively, one output end of the 1*2 optical switching unit is connected with a Y+ output port, the other output end of the 1*2 optical switching unit is connected with a processing unit through a photoelectric conversion circuit, the other input end of the 2*1 optical switching unit is connected with the output end of the processing unit, and the output end of the 2*1 optical switching unit is connected with an X+ output port. The network interconnecting device has the advantages of being small in micro ring quantity, little in optical loss and simple in structure.
Owner:NAT UNIV OF DEFENSE TECH

Mining machine fast frequency search method and device and mining machine

The invention discloses a mining machine fast frequency search method and device as well as the mining machine. The method includes: under the initial output voltage of the power supply of the mining machine, the frequency of the computing chip is gradually increased from the initial frequency point through at least one first frequency point to the target frequency, wherein the duration of the operation chip at each first frequency point is shorter than the duration of the operation chip at each first frequency point in the conventional frequency search process; when the operation chip reaches the target frequency, according to at least An output voltage value and at least one second frequency point, combined with the test tasks issued to the computing chip and the feedback results of the computing chip, the output voltage of the power supply of the mining machine and the frequency of the computing chip are adjusted to obtain the limit frequency of the computing chip and The output voltage of the mining machine power supply corresponding to the limit frequency. The present invention shortens a large amount of frequency search time, saves power consumption of frequency search, and the saved time is used for mining calculation of mining machines to further improve mining efficiency.
Owner:SHENZHEN MICROBT ELECTRONICS TECH CO LTD

Passive cooling separation type heat pipe arrangement structure in spent fuel pool

The invention provides a passive cooling separation type heat pipe arrangement structure in a spent fuel pool. The passive cooling separation type heat pipe arrangement structure comprises an evaporation heat pipe, a condensing pipe and a connection pipe; the evaporation heat pipe is arranged in the spent fuel pool, and located below the liquid level in the spent fuel pool; the condensing pipe isarranged outside the spent fuel pool, and located above the roof of a radioactive waste workshop; and the connection pipe is arranged in the spent fuel pool, perpendicularly penetrates out of the spent fuel pool, and extends westwards along the radioactive waste workshop to penetrate out the radioactive waste workshop. The passive cooling separation type heat pipe arrangement structure in the spent fuel pool is characterized in that both the heat pipe evaporation section and the condensing section adopt assemblies, the number of the connection pipes is reduced so that the connection pipes canbe arranged in a simplified mode. The arrangement mode of the separation type heat pipe does not influence the number of the grillages stored in the spent fuel pool and the operation space, and support can be provided for design of a spent fuel pool cooling system.
Owner:SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD

Lifting delivery mechanism suitable for refrigeration type vending machine and working principle thereof

A lifting delivery mechanism suitable for a refrigeration type vending machine comprises a storage bin and a goods taking bin, a heat insulation layer is arranged between the storage bin and the goods taking bin, a goods outlet is formed in the heat insulation layer, an opening and closing mechanism is arranged above the goods outlet, and a goods receiving platform is arranged above the opening and closing mechanism. And a platform lifting mechanism for driving the goods receiving platform to lift is arranged above the goods receiving platform. The invention further discloses a working principle of the lifting delivery mechanism suitable for the freezing type vending machine. The lifting delivery mechanism is compact in structure and easy to use, the goods conveying function of a common goods receiving platform can be achieved, when the goods receiving platform reaches the bottom, the sliding plate can be separated from the lifting mechanism and retract into the bottoms of the goods shelves under the action of the opening and closing mechanism, and the function of placing the goods into the goods taking bin is achieved under the condition that the number of the goods shelves is not affected.
Owner:FUJIAN JUNPENG EASIVEND COMML EQUIP
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