Prism-Type Electrical Converter for Balanced Three-Phase Power
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Solution Overview
Problem
Current electric power conversion technologies, such as Scott and Open Delta systems, are inefficient, unbalanced, and costly, particularly for high voltage applications, and are limited to low voltage use, failing to meet the needs of power distribution systems that require three-phase services in areas with low user density.
Innovation Solution
A prism-type converter with a magnetic and electric system, utilizing a three-phase magnetic circuit and digital commutation to create a third phase from two existing phases, achieving high efficiency and balanced voltage distribution from high voltage to low voltage, and enabling universal application in power generation, transmission, and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If Open Delta system is used to provide three-phase power in distribution system, then three-phase service is available, but efficiency is only 57.7% and costs are high
Solution Approach 1:
The patent changes the fundamental operating parameters by using a prism-type converter with specific winding configurations (primary windings P1, P2 and secondary windings S1, S2, S3) and phase displacement angles (30°, 45°, 60°, or 90°) to achieve superior efficiency of 98% or higher while maintaining three-phase service delivery capability
Solution Approach 2:
The converter is designed with universal applicability across multiple voltage levels (high voltage to high voltage, high voltage to medium voltage, medium voltage to low voltage) and can serve various electric systems from generation to supply, replacing multiple specialized converters
2Adaptability or versatility
If Scott system is used for phase conversion, then phase conversion is achieved, but it cannot be applied to present electric nets and reverse application is not possible
Solution Approach 1:
The prism-type converter achieves universal compatibility with present electric nets by designing a system that can perform both forward conversion (two-phase to three-phase) and reverse conversion (three-phase to two-phase), unlike the Scott system which is limited to one direction and specific applications
3Reliability
If low voltage electronic converters are used, then operating performance is improved, but they are limited to low voltage to low voltage and application is extremely expensive
Solution Approach 1:
The patent extends the voltage range capability by designing the converter to operate across high voltage, medium voltage, and low voltage levels, replacing the low voltage electronic converters while maintaining superior operating performance and reducing costs
4Loss of energy
If prism-type converter is used to create third phase through vectorial sum, then conversion efficiency reaches 98%, but device complexity increases
Solution Approach 1:
The converter is segmented into distinct functional components including primary windings (P1, P2), secondary windings (S1, S2, S3), and a magnetic core with specific geometric arrangements, allowing the complex function to be achieved through coordinated simple elements
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 prism-type converter achieves efficiency up to 98%, provides balanced voltages, and allows for cost-effective three-phase service delivery, reducing installation costs by 33% and extending service to areas with two-phase lines, thus addressing the inefficiencies and limitations of existing systems.
Implementation Method 1
a prism-type converter constituted by two systems, one of said systems is magnetic and the other one electric... the magnetic circuit is based on the three-phase magnetic circuit and the two-phase side is built on the three magnetic circuits that form it
Implementation Method 2
it includes a cooling or thermal control system due to the fact that said converter has a three-phase side
Implementation Method 3
cooling or thermal control system
Data Source
AI summary
The invention relates to a prism-type electrical converter for the generation, transmission, distribution and supply of electric current. The electrical converter includes two systems, a magnetic system and an electrical system, plus an additional thermal control or cooling system. As a result, the converter has three-phase side.