Transfer-Star Transformer for Dynamic Voltage and Harmonics Control
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Solution Overview
Problem
The existing electrical power transformation systems face challenges in maintaining reliable and efficient energy transmission due to the increasing use of asynchronous variable renewable generation, which affects operational stability and requires additional costly equipment for power quality and reliability.
Innovation Solution
A transformer apparatus comprising three outer transformer limbs with concentrically wound primary, secondary, and reaction coils, along with an inner transformer limb and a transfer star configuration, allows for dynamic voltage control, harmonics suppression, and power factor control, enhancing the efficiency and reliability of the electrical power transformation system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional transformers are used for voltage transformation, then voltage transformation is achieved, but dynamic voltage control and power factor control are not available
Solution Approach 1:
The patent introduces a transfer star with controllable transfer coils that can dynamically adjust the magnetic coupling between outer and inner transformer limbs. This enables real-time control of voltage transformation ratio and power factor, transforming the static transformer into a dynamic device capable of adapting to varying grid conditions and load requirements
2Reliability
If additional equipment is added to maintain power quality and reliability, then system reliability improves, but device complexity and cost increase
Solution Approach 1:
The patent integrates multiple functions into a single transformer apparatus: voltage transformation, dynamic voltage control, power factor control, and harmonics suppression. The transfer star structure with controllable coils serves as a multi-functional component that performs what would traditionally require separate devices, thereby improving power quality while reducing overall system complexity
Solution Approach 2:
The patent combines the functions of voltage transformation and active power factor control into a single integrated transformer structure. The transfer coils are magnetically coupled to both outer and inner limbs, allowing simultaneous performance of transformation and control functions without requiring additional standalone equipment
3Adaptability or versatility
If asynchronous variable renewable generation is increased, then energy supply flexibility improves, but operational stability and system reliability deteriorate
Solution Approach 1:
The patent implements control systems that monitor grid conditions and load requirements, then adjust the transfer coil excitations accordingly. This feedback mechanism allows the transformer to compensate for variations introduced by asynchronous renewable generation, maintaining voltage stability and power factor despite fluctuating input conditions
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 proposed solution enables efficient voltage transformation, dynamic voltage control, harmonics suppression, and power factor correction, thereby improving the reliability and efficiency of the electrical power transformation system, reducing the need for additional equipment, and enhancing energy transmission stability.
Implementation Method 1
a transformer is an electromagnetic device that transfers electric energy from one circuit to another circuit via mutual inductance
Implementation Method 2
When an alternating voltage is applied to the primary winding, an alternating current flows through the primary winding. This magnetizing current produces an alternating magnetic flux. The flux is mostly constrained within the magnetic core, and induces voltage in the linked secondary winding
Data Source
AI summary
A transformer apparatus for an electrical power transformation system is provided. The transformer apparatus comprises three outer transformer limbs, an inner transformer limb a transfer star, and first and second connection portions. The transfer star comprises an electromagnetic transfer core and three transfer coils. The electromagnetic transfer core extends from the inner transformer limb to each of the three outer transformer limbs at a point on each outer transformer limb between the first coil assembly and the second coil assembly. The transfer coils are wound around the electromagnetic transfer core such that each transfer coil is arranged between the inner transformer limb and a respective outer transformer limb. The transfer star is configured to allow transfer of magnetomotive force between the outer transformer limbs and the inner transformer limb of the transformer apparatus. First and second connecting portions are to allow magnetic flux to flow between the inner and outer transformer limbs.