Magnetic Core Power Control for Grid Frequency Harmonisation
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Solution Overview
Problem
The integration of non-dispatchable renewable energy sources like wind and solar photovoltaic into the electric power grid poses challenges for load balancing and frequency stability due to timing imbalances, leading to energy losses and potential system failures such as blackouts.
Innovation Solution
A power control apparatus utilizing a magnetic core with primary and secondary windings, voltage source converters, and a controller to modulate electrical power signals through near-field induction and high-speed dispatch, enabling harmonisation and energy storage to balance load and supply in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If non-dispatchable renewable energy sources are integrated into the electric power grid, then energy production capacity is improved, but frequency stability and load balancing deteriorate due to timing imbalances
Solution Approach 1:
The patent introduces an intermediary power control apparatus positioned between the renewable energy source and the electrical network. This apparatus includes a controller that receives power from the renewable source and outputs controlled power to the grid, acting as a mediator that can regulate and condition the power flow to maintain frequency stability while accommodating variable renewable generation.
Solution Approach 2:
The controller dynamically changes power parameters (voltage, current, frequency) based on real-time conditions. By adjusting these parameters, the system can match the timing and characteristics of renewable energy production with grid requirements, resolving the timing imbalance between generation and consumption while maintaining frequency stability.
2Reliability
If load balancing techniques such as adjusting dispatchable generation are employed, then frequency stability is improved, but device complexity and operational flexibility deteriorate
Solution Approach 1:
The power control apparatus enables self-service load balancing by automatically regulating power flow from renewable sources without requiring complex external dispatchable generation systems. The controller autonomously adjusts power parameters to maintain frequency stability, eliminating the need for additional complex infrastructure while achieving the same stability goals.
3Quantity of substance
If pumped-storage hydroelectricity is employed for load balancing, then energy storage capability is improved, but geographical adaptability and environmental impact worsen
Solution Approach 1:
The patent employs energy storage mechanisms that are simpler, more adaptable, and can be deployed in various locations without the geographical constraints of pumped-storage hydroelectricity. The system uses controllable power flow and localized storage solutions that can be implemented alongside renewable sources at the point of generation, providing flexible energy management without major infrastructure requirements.
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 apparatus optimizes energy flow and load balancing by reducing harmonics and stabilizing frequency, allowing for efficient temporal balancing of demand and supply, even with non-linear loads, and supports energy storage for peak demand periods.
Implementation Method 1
time variant magnetic flux modulation through near-field induction and high-speed dispatch
Implementation Method 2
enabling harmonisation and energy storage to balance load and supply in real-time
Data Source
AI summary
Power control apparatus and methods for modulating electrical power signals are discussed. In one example, a power control apparatus comprises a magnetic core comprising a first limb and a second limb. A primary winding is arranged around the first limb, and a secondary winding is arranged around the second limb. The power control apparatus comprises a voltage source converter having an AC connection and a DC connection, and a controller. The controller is configured to receive data associated with parameters of a first signal in the primary winding, compare the parameters of the first signal to parameters of a reference signal for the secondary winding, determine a harmonisation signal which, when applied to the first limb, causes a second signal in the secondary winding to approximate the reference signal. The controller is configured to cause application of the harmonisation signal to the first limb using the voltage source converter.