Dual-Coil Inductor Assembly for Linear Inductance Adjustment
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Solution Overview
Problem
Existing inductor adjustment methods are complex and can distort current waveforms due to the need for constant direct current adjustments in the saturation inductance method, and previous solutions like thyristor-controlled transformers are impractical.
Innovation Solution
An inductor assembly with a current regulating device comprising diodes, a capacitor, and an insulated gate bipolar transistor (IGBT) allows for simple adjustment of inductance by regulating the current in the second coil, which changes the magnetic flux and inductance without distorting the current waveform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the saturation inductance method is used to adjust inductance by applying direct current to the second coil, then the inductance of the first coil can be changed, but the operation becomes complex and the current waveform is distorted
Solution Approach 1:
The patent replaces the mechanical/manual adjustment method with an automatic electronic control system. The current regulating device automatically adjusts the direct current applied to the second coil based on feedback from the detecting apparatus, eliminating the need for manual operation and reducing operational complexity while maintaining inductance adjustment capability
Solution Approach 2:
The patent implements a feedback control system where the detecting apparatus monitors the inductance or current parameters and feeds this information back to the current regulating device. This closed-loop feedback mechanism enables automatic adjustment of the direct current to maintain optimal inductance values without complex manual intervention
2Adaptability or versatility
If direct current is constantly adjusted in the second coil to change inductance, then the inductance value can be modified, but the current waveform distortion increases
Solution Approach 1:
The detecting apparatus continuously monitors the current waveform and inductance parameters, providing feedback to the current regulating device. This feedback mechanism enables the system to adjust the direct current in the second coil while maintaining sinusoidal waveform quality, reducing harmonic distortion and other waveform abnormalities
Solution Approach 2:
The patent replaces manual current adjustment with an electronic control system that can precisely regulate the direct current applied to the second coil. This electronic control maintains better waveform quality by using smooth transitions and feedback-based regulation rather than mechanical switching or manual adjustment
3Adaptability or versatility
If a thyristor-controlled transformer is used for inductance adjustment, then the inductance can be varied, but the structure becomes impractical
Solution Approach 1:
The patent divides the inductance adjustment function into separate modular components: the first coil for AC operation, the second coil for DC control, the detecting apparatus for monitoring, and the current regulating device for control. This segmentation allows each component to perform its specific function independently, simplifying the overall structure compared to a thyristor-controlled transformer
Solution Approach 2:
The patent extracts the control function from the main inductance structure by using a separate second coil for DC control rather than incorporating control mechanisms within the AC coil assembly. This separation removes the need for complex thyristor switching circuits and integrates within the AC coil structure, significantly simplifying the overall device structure
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 solution enables quick, linear adjustment of inductance across various structures and frequencies, ensuring minimal distortion and practicality in inductor adjustment.
Implementation Method 1
the first coil is configured to be connected to an operating circuit (the current in the operating circuit is an alternating current), which enables the second coil to generate an induced current
Implementation Method 2
the current regulating device comprises a first diode, a second diode, a third diode, a fourth diode, a capacitor, an inductor, a fifth diode and an insulated gate bipolar transistor
Data Source
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AI summary
Disclosed are an inductor and a speaker. The inductor assembly includes: an inductor and a current regulating device. The inductor includes a first coil and a second coil, wherein the first coil is configured to, after being connected to an operating circuit, enable the second coil to generate an induced current; two ends of the second coil are connected to the current regulating device in series by means of conducting wires, and the current regulating device is configured to regulate the magnitude of the induced current generated by the second coil. In the inductor assembly provided in the present disclosure, a first coil, a second coil, and a current regulating device are provided, and two ends of the second coil are connected to the current regulating device in series by means of conducting wires. After the first coil is connected to a working circuit, the second coil is enabled to generate an induced current. When the inductance of the inductor in the inductor assembly needs to be changed, it is only necessary to adjust the current regulating device, and the operations are simple.