Transformer Power Factor Adjustment via Magnetic Flux Phase Control
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Solution Overview
Problem
Current transformer circuits fail to effectively increase the power difference between the power dissipated at the load and the power provided by the source through adequate power factor adjustment.
Innovation Solution
A power factor adjustment apparatus is introduced, utilizing a magnetic core with a primary coil to control the phase change of magnetic flux between the primary and secondary coils, allowing for adjustment of the power factor by altering the path length of the magnetic core, frequency of the alternating voltage, or adding reactive components, thereby increasing the power difference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional transformer circuits are used without phase control, then the structure is simple, but the power difference between load power and source power cannot be effectively increased
Solution Approach 1:
The patent introduces dynamic phase control of magnetic flux in the transformer circuit, allowing the system to adaptively adjust the phase angle between primary and secondary voltages. This dynamic adjustment enables optimization of power transfer and increases the power difference between load and source without requiring complete redesign of the transformer structure.
Solution Approach 2:
The patent changes key operational parameters including the phase angle of magnetic flux, frequency of alternating voltage, and path length of magnetic core. By adjusting these parameters, the system achieves effective power factor adjustment and increases power difference while maintaining the basic transformer structure.
2Productivity
If phase control is implemented to adjust power factor, then the power difference increases, but the device complexity increases
Solution Approach 1:
The magnetic core serves multiple functions: it provides the magnetic path for flux generation, enables phase control through path length adjustment, and supports frequency variation. This multi-functionality reduces the need for separate control components, thereby limiting the increase in device complexity while achieving improved energy transfer efficiency.
Solution Approach 2:
The patent uses reactive components as intermediaries to facilitate phase control. These components mediate the phase relationship between primary and secondary circuits, enabling power factor adjustment without requiring complex direct control mechanisms between the coils.
3Ease of operation
If the path length of the magnetic core is altered to control phase change, then the power factor is adjusted, but the manufacturing complexity increases
Solution Approach 1:
The magnetic core is divided into segmented sections with adjustable path lengths. This segmentation allows for modular manufacturing and assembly, where each segment can be independently fabricated and then combined to achieve the desired total path length for specific phase control requirements.
Solution Approach 2:
The magnetic core structure incorporates adjustable elements that allow the path length to be modified after manufacturing. This dynamic adjustability enables fine-tuning of the phase angle without requiring complete remanufacturing, thereby maintaining ease of manufacture while achieving operational flexibility.
4Power
If frequency of alternating voltage is increased to increase phase change, then the power difference function improves, but the energy loss increases
Solution Approach 1:
The patent optimizes the operating frequency to achieve the optimal balance between phase change and energy loss. By carefully selecting and adjusting the frequency parameter, the system maximizes the power difference function while minimizing excessive energy losses that would occur at unnecessarily high frequencies.
Solution Approach 2:
The system maintains continuous operation at the optimized frequency rather than allowing frequent variations. This continuous operation at the optimal frequency point ensures sustained power difference improvement while avoiding the energy losses that would result from frequent frequency adjustments and transitions.
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
This solution enables increased power difference between the power dissipated at the load and the power provided by the source, optimizing energy transfer in transformer circuits.
Implementation Method 1
Transformers are devices that use electromagnetic induction to increase or decrease the AC voltage. The voltage and current transferred from the power source to the load vary according to the number of turns of the primary coil and the number of turns of the secondary coil.
Implementation Method 2
a current is generated in a secondary coil of a transformer circuit or in a rotor of an induction machine by a magnetic flux propagated through the magnetic core, wherein, a phase change of the magnetic flux between the primary coil and the secondary coil is controlled
Data Source
AI summary
In this work, it is shown for the first time that the power and the impedance in a transformer circuit depend on the phase of the flux, hence the phase of the current. There is a phase change when the flux travels the magnetic core, and formulas for the effect of the phase change in the power and the impedance are derived. Therefore, the power factor can be adjusted so that the power is delivered more at the load than that, at the primary supplied by the source.