Magnetically Linked Inductor Control for Solar Power
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Solution Overview
Problem
Existing solar panel systems are inefficient due to the need for frequent disconnection and reconnection to maintain maximum power point tracking, resulting in potential power loss and reduced efficiency.
Innovation Solution
A control arrangement using magnetically linked inductors and switch means to form an LCR circuit, allowing controlled extraction and storage of internal capacitance energy, eliminating the need for maximum power point tracking algorithms and enhancing energy extraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If maximum power point tracking is implemented by repeatedly connecting and disconnecting the supply, then the solar panel operates at the maximum power point, but power is lost during disconnection periods and efficiency is reduced
Solution Approach 1:
The circuit performs preliminary action by storing energy in the internal capacitance of the solar panel before it is needed. The capacitance charges up during normal operation and then discharges to provide continuous power during switching periods, eliminating the power loss that occurs when the supply is disconnected. This preliminary energy storage ensures that power delivery continues uninterrupted while maintaining maximum power point operation.
2Ease of operation
If the supply is disconnected for maximum power point tracking, then the operating point can be maintained, but continuous power delivery to the load is interrupted
Solution Approach 1:
The internal capacitance of the solar panel serves as an intermediary energy storage element between the solar panel and the load. It absorbs excess energy when the panel is producing more than needed and releases energy when the panel is disconnected for maximum power point tracking. This intermediary allows the system to maintain maximum power point operation while delivering continuous power to the load without interruption.
3Measurement precision
If conventional maximum power point tracking is used with frequent switching, then the solar panel operates at optimum point, but system efficiency is reduced due to disconnection periods
Solution Approach 1:
The circuit enables continuity of useful action by ensuring that power delivery to the load never stops, even while the solar panel is being switched for maximum power point tracking. The internal capacitance continuously charges and discharges, bridging the gaps created by switching operations. This eliminates the periods of zero power output that occur in conventional systems, maintaining both accurate maximum power point operation and continuous productive power delivery.
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 continuous energy supply to a load with increased output voltage and reduced heat generation, enhancing the overall efficiency of solar panel systems and allowing for viable installations in locations with previously insufficient output.
Implementation Method 1
first and second magnetically linked inductors arranged in series with one another... third and fourth magnetically linked inductors each being connected to the connection between the first and second inductors
Implementation Method 2
the internal capacitance forming the capacitance of the LCR circuit and the third or fourth inductor forming the inductance of the LCR circuit
Implementation Method 3
third or fourth inductor forming the inductance of the LCR circuit
Data Source
AI summary
A control arrangement for use in controlling the electrical supply from a power supply unit including an internal capacitance. The control arrangement includes first and second magnetically linked inductors arranged in series with one another and defining a connection therebetween. Third and fourth magnetically linked inductors are each connected to the connection between the first and second inductors. A switch means provides switched connections between the third and fourth inductors and ground, and a controller is operable to control the operation of the switch means such that closing of a switch of the switch means results in the formation of an LCR circuit. The internal capacitance forms the capacitance of the LCR circuit and the third or fourth inductor form the inductance of the LCR circuit. The magnetic link between the third and fourth inductors allow an output to be generated from the other of the third and fourth inductors.