Electric Reactor Magnetic Reluctance Control
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Solution Overview
Problem
Current electric reactors used for reactive power compensation in high-tension long-distance transmission and cable systems face challenges in maintaining a rigid structure while adjusting reactive power efficiently and precisely, often resulting in noise due to vibrations and requiring complex control systems.
Innovation Solution
An electric reactor design utilizing a magnetic core with a generator of magnetic distortion fields, where a control current adjusts the magnetic reluctance to match reactive power needs, combining with the main magnetic flow to vary reactive power consumption without mechanical reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the central column of air gaps is maintained rigid using epoxy glue and bolt-nut mechanism, then structural stability is improved, but noise due to vibration of air-gap spacers increases over time
Solution Approach 1:
The patent replaces the mechanical rigid fixation system (epoxy glue and bolt-nut mechanism) with a magnetic field-based control system. The magnetic distortion field generator creates controlled magnetic fields that stabilize the air-gap spacers without mechanical constraints, eliminating the vibrations and noise that occur over time in mechanically fixed structures.
Solution Approach 2:
The patent changes the physical state of the air-gap spacers from mechanically constrained to magnetically controlled. By applying magnetic distortion fields, the spacers are held in position through magnetic forces rather than mechanical fixation, allowing for stable operation without the vibration-induced noise that plagues mechanically fixed structures.
2Adaptability or versatility
If load tap changers or semi-permanent adjustment of turns ratio are used to adjust reactive power, then reactive power control is achieved, but device complexity and operational interruptions increase
Solution Approach 1:
The patent replaces mechanical adjustment mechanisms (load tap changers, movable cores) with an electromagnetic field-based control system. The magnetic distortion field generator uses control currents to adjust the magnetic flux distribution in real-time, enabling continuous reactive power control without mechanical movement or operational interruptions.
Solution Approach 2:
The patent enables continuous adjustment of reactive power through the magnetic distortion field generator, which can modify the magnetic field distribution at any point during operation. This eliminates the need for discrete steps or operational interruptions required by mechanical adjustment mechanisms, providing smooth and continuous control.
3Adaptability or versatility
If mechanical reconfiguration is used to adjust reactive power, then reactive power adjustment is achieved, but structural rigidity and operational continuity are compromised
Solution Approach 1:
The patent replaces all mechanical reconfiguration mechanisms with an electromagnetic field control system. The magnetic distortion field generator adjusts reactive power by modifying the magnetic flux distribution through control currents, completely eliminating mechanical moving parts that would compromise structural rigidity or require operational interruptions.
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 approach allows for precise and efficient adjustment of reactive power with reduced noise and structural vibrations, maintaining a rigid structure and enabling a wide operational range with simpler control mechanisms.
Implementation Method 1
at least a control coil to which a control current is delivered to generate a magnetic distortion field in the magnetic core
Implementation Method 2
the magnetic distortion field is combined with the main magnetic flow generating a distortion of the latter, achieving a change in the magnetic reluctance of the core
Data Source
AI summary
An electric reactor of controlled reactive power is formed by a magnetic core, and at least one primary winding to which a main current is supplied to generate a main magnetic flow on the magnetic core. The reactor also includes at least a generator of the magnetic distortion field to which a control current is supplied to generate a field of magnetic distortion on the magnetic core. The magnetic distortion field is opposed to the main magnetic flow generating a distortion of the latter, achieving a change in the magnetic core reluctance and in this way a change in the reactive power of consumption of the reactor. In addition, a method is described to adjust the reactive power in an electric reactor.