Electronic Sine Wave Transformer Using Magnetic Storage Coupling
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Solution Overview
Problem
Existing power transfer circuits using DC capacitive storage require complex rectification, inverters, and digital-to-analog conversion to achieve AC output, leading to inefficiencies and harmonic issues, and often necessitate direct line-load connections for AC operation, which is not always desirable.
Innovation Solution
An electronic sine wave transformer circuit utilizing magnetic storage coupling with high-frequency pulses to transfer AC power, employing a common core with multiple windings and bidirectional switches to maintain energy storage and output AC voltage at the same frequency without diode rectification, minimizing size, weight, and conversion losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If DC capacitive storage is used for power transfer, then energy storage capability is improved, but circuit complexity increases due to required rectification, inverters, and digital-to-analog conversion
Solution Approach 1:
The patent changes the storage medium from capacitive (electric field) to inductive (magnetic field), fundamentally altering the energy storage mechanism. This parameter change eliminates the need for rectification and inversion circuits, as the magnetic core directly couples AC input to AC output without requiring DC conversion stages.
Solution Approach 2:
The invention extracts and removes the complex DC-to-AC conversion stages (rectifiers, inverters, digital-to-analog converters) from the power transfer circuit. By using magnetic storage coupling, the system directly transfers AC power from source to load, eliminating unnecessary intermediate conversion components while maintaining energy storage capability.
2Ease of operation
If rectification and inversion circuits are used to achieve AC output, then AC power transfer is enabled, but harmonic content increases and power quality deteriorates
Solution Approach 1:
The patent replaces the mechanical/electronic switching systems (rectifiers and inverters) with a magnetic field-based energy transfer mechanism. The magnetic core couples the input and output windings directly, enabling AC power transfer through electromagnetic induction without the harmful switching harmonics generated by conventional rectification and inversion circuits.
3Object-generated harmful factors
If direct line-load connection is used for AC operation, then power quality is maintained, but adaptability and flexibility are reduced
Solution Approach 1:
The patent introduces a magnetic storage coupling unit as an intermediary between the power source and load. This magnetic core with multiple windings serves as a mediator that maintains power quality through electromagnetic coupling while providing adaptability through controlled energy storage and release, enabling flexible AC power transfer without direct line-load connection.
4Ease of operation
If complex DC-to-AC conversion systems are used, then AC output is achieved, but size and weight increase
Solution Approach 1:
The invention extracts and eliminates the heavy DC-to-AC conversion equipment (rectifiers, inverters, control circuits) from the system. By using magnetic storage coupling, AC power transfer is achieved through a compact magnetic core and windings, dramatically reducing the size and weight of the power transfer circuit while maintaining full AC output capability.
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 provides a compact, efficient, and flexible power transfer method that maintains a clean sinusoidal output with reduced harmonic content, eliminating the need for complex DC-to-AC conversion and minimizing size and weight, while allowing AC input to be transformed into AC output directly.
Implementation Method 1
magnetic storage coupling unit (comprised of a common core with multiple windings) for magnetically storing energy
Implementation Method 2
using high frequency pulses (provided by one or more switches) that are used to charge a magnetic storage unit
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 1E
AI summary
There is provided an electronic sine wave transformer circuit configuration for transferring power from a source to a load using magnetic storage coupling, the circuit comprising: an input node adapted to receive an input alternating current power source having an input voltage operating at an input frequency in a Hertz range; the magnetic storage coupling unit comprising: a first set of windings coupled to a first switch, the first switch for receiving an input charging current associated with the input voltage; a second set of windings located in series or opposing connection with the first set of windings with a common magnetic path; a second switch connected at one end between the first and second set of windings and at another end to a common ground, the first and second switches having a switching frequency in a kilohertz range and switching between on and off in alternating modes; and an output node connected to the second set of windings, the output node adapted to provide an output AC power having a frequency of the input frequency to the load, the output power having an output voltage with an amplitude based on the input voltage and a voltage constant.