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Calculation method of forced excitation hot spot temperature of air-cooled hidden pole synchronous condenser rotor

A technology of hot spot temperature and calculation method, applied in calculation, computer-aided design, complex mathematical operations, etc., can solve problems such as inability to accurately evaluate hot spot temperature, and achieve fast calculation and drawing, easy operation, and accurate results

Active Publication Date: 2022-06-28
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD +1
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Problems solved by technology

[0003] In the past, the forced excitation hot spot temperature of the air-cooled rotor winding was generally estimated roughly by using the copper weight and copper specific heat of the rotor winding. Strictly speaking, only the average temperature of the rotor winding can be obtained, but it cannot be accurately evaluated. hot spot temperature

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  • Calculation method of forced excitation hot spot temperature of air-cooled hidden pole synchronous condenser rotor
  • Calculation method of forced excitation hot spot temperature of air-cooled hidden pole synchronous condenser rotor
  • Calculation method of forced excitation hot spot temperature of air-cooled hidden pole synchronous condenser rotor

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Embodiment Construction

[0048] In order to make the present invention more obvious and comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0049] like image 3 As shown in the present invention, a method for calculating the rotor forced excitation hot spot temperature of an air-cooled non-polar synchronous modulator includes the following steps:

[0050] Step 1: Obtain the parameters and material property parameters of the input calculation model: only need to input 24 parameters, including the axial length L of the calculation model of the hottest point segment p (unit: m), the average half tooth width b of the rotor tf (unit: m), half copper wire width b of rotor cuf (unit: m), the height h of each turn of the rotor copper wire cuf (unit: m), rotor inter-turn insulation thickness h zar (unit: m), rotor slot insulation thickness h ir (unit: m), the heat dissipation coefficient aph in the radial ventilation holes of the rotor kr (Un...

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Abstract

The invention discloses a method for calculating the forced excitation hotspot temperature of the air-cooled hidden pole synchronous condenser rotor. By inputting the calculation model and the forced excitation parameters, the model geometry is firstly divided into discrete heat flow node topology connection graphs; each heat flow node is gradually determined. Parameters such as area, depth, thermal resistance, resistance, heating power, etc., list the energy conservation equations of each node with the node temperature as the unknown variable and form a system of equations, and obtain the forced hot spot temperature of the rotor winding of the air-cooled camera by solving the equations . Only need to input 24 parameters, it can automatically calculate the rotor forced excitation hot spot temperature, and automatically draw the heat flow node topology diagram, which can well meet the requirements of air-cooled hidden pole synchronous motor rotor forced excitation hot spot temperature calculation and curve drawing, to achieve convenience, The purpose of quickly and accurately obtaining the forced excitation hot spot temperature of the air-cooled rotor. It has the characteristics of less input data, simple operation, quick calculation and drawing, concise and intuitive topological connection diagram of heat flow nodes, etc.

Description

technical field [0001] The invention relates to a method for calculating the rotor forced excitation hot spot temperature of an air-cooled hidden-pole synchronous modulator, which can be used in the calculation research and product design and development of the rotor forced-excitation hot spot temperature of a distributed air-cooled hidden-pole synchronous modulator. The field of cooling design technology. Background technique [0002] The new generation of distributed air-cooled hidden-pole synchronous modulators have relatively high requirements for forced excitation, and the calculation of the forced excitation hot spot temperature of the air-cooled rotor windings is an important part of product design and development. The accuracy of the rotor forced excitation hot spot temperature calculation not only affects the determination of the product design scheme, but also is closely related to the safety of the air-conditioning camera operating under extreme forced excitation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/11G06F30/20G06F119/08
CPCG06F17/11G06F30/20G06F2119/08
Inventor 钟后鸿曹志伟王继豪咸哲龙刘明慧
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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