Aluminum Alloy Thyristor Valve Module with Epoxy Insulation
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Solution Overview
Problem
Traditional high voltage direct current (HVDC) thyristor valve modules are plagued by issues such as large size, high weight, difficult installation and maintenance, and structural strength problems, which affect safety, efficiency, and manufacturing costs.
Innovation Solution
A novel thyristor valve module design featuring a bracket structure made of aluminum alloy and insulated beams, with modular components like thyristor valve strings, damped resistors, and capacitors, and a water cooling system, optimized for reduced weight, size, and ease of assembly, using flame retardant materials and a parallel cooling path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metallic frame structure is used for the thyristor valve module, then the support strength is great, but the insulation problem increases the size and weight of the module
Solution Approach 1:
The patent uses a composite frame structure combining aluminum alloy (metallic) and epoxy resin (insulating material) to create a unified support structure that provides both mechanical strength and electrical insulation, eliminating the need for separate insulating components and reducing overall module weight
Solution Approach 2:
The aluminum alloy frame structure serves multiple functions simultaneously: it provides mechanical support strength, acts as an electrical insulator through the epoxy resin coating, and serves as the mounting structure for all valve components, reducing the need for additional separate structures
2Reliability
If a mixture frame structure with insulated beams is used, then the insulation is improved, but the mechanical strength is insufficient to take great weight load
Solution Approach 1:
The patent employs aluminum alloy as the primary structural material providing high mechanical strength, combined with epoxy resin coating that provides excellent electrical insulation properties, creating a composite structure that satisfies both mechanical and electrical requirements
3Ease of manufacture
If a module distributed structure design is used, then the modular assembly is achieved, but the installation precision requirement increases and assembly difficulty increases
Solution Approach 1:
The patent divides the thyristor valve into functional modules (valve body module, control module, cooling module) that can be manufactured separately and then assembled together using the integrated frame structure, achieving manufacturing modularity without compromising installation precision
Solution Approach 2:
The patent merges the support structure and insulation function into a single integrated aluminum alloy frame with epoxy resin coating, reducing the number of separate components that need to be precisely positioned and assembled, thereby lowering installation precision requirements
4Reliability
If traditional thyristor valve modules are used, then the functional requirements are met, but the weight and structural size are large
Solution Approach 1:
The patent uses aluminum alloy and epoxy resin composite materials that provide both the necessary mechanical strength and electrical insulation properties, enabling a more compact and lighter design compared to traditional metallic frame structures with separate insulating components
Solution Approach 2:
The integrated aluminum alloy frame structure performs multiple functions (support, insulation, mounting) simultaneously, reducing the overall number of components and enabling a more compact module design that weighs less than traditional configurations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design results in a smaller, lighter, easier-to-assemble and maintain thyristor valve module with improved structural strength, reduced manufacturing costs, and enhanced safety and reliability, addressing the limitations of traditional metallic frame and distributed structure designs.
Implementation Method 1
a water cooling system to meet the requirement
Data Source
AI summary
This present invention provides a high power electronic device which is used for transforming the alternating current into the direct current, or transforming the direct current into the alternating current: a thyristor valve module, there are two same thyristor valve segments in the whole thyristor valve module; each segment includes saturated reactor, thyristor valve unit, direct current equalizing resistor unit, acquiring energy unit, damped resistor unit, damped capacitor unit, gate series unit and water cooling system. This device series connects the thyristor valves to meet different transmission powers and different voltage ranks. This device is the key element of the high voltage direct current transmission. It can be used for different voltage ranks AD transmission system and can also be used for different voltage ranks DC system, including the ultra-high voltage 800 kV and above system.