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Related Concept Videos

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Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
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The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
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The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
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Multicoil resonance-based parallel array for smart wireless power delivery.

S A Mirbozorgi, M Sawan, B Gosselin

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    Summary
    This summary is machine-generated.

    This study introduces a smart power surface using a novel multicoil structure for efficient wireless power transfer. It adapts power delivery to the load, improving efficiency and coverage without complex tracking.

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    Area of Science:

    • Electrical Engineering
    • Wireless Power Transfer
    • Smart Surfaces

    Background:

    • Wireless power transfer is crucial for modern electronics and biomedical implants.
    • Existing inductive power transfer systems face challenges in efficiency and load detection.

    Purpose of the Study:

    • To present a novel resonance-based multicoil structure for efficient wireless power transfer.
    • To demonstrate adaptive power delivery based on load presence.

    Main Methods:

    • Development of a 4-coil resonance-based inductive link with a multicoil transmitter array.
    • Utilizing a single power driver circuit for the entire array.
    • Investigating the load-dependent power transmission characteristics of the parallel coils.

    Main Results:

    • Achieved 55% power transfer efficiency.
    • Demonstrated natural load detection without complex circuitry.
    • Covered an area four times larger than conventional topologies.
    • Transmitted power scales with load, with loaded coils transmitting the majority of power.

    Conclusions:

    • The proposed smart power surface offers superior power, size, and cost efficiency.
    • Adaptive power delivery enhances performance for various devices like mobile phones and implants.
    • The system eliminates the need for complex load-location detection circuitry.