power transfer theorem

power transfer theorem

[¦pau̇·ər ′tranz·fər ‚thir·əm]
(electricity)
The theorem that, in an electrical network which carries direct or sinusoidal alternating current, the greatest possible power is transferred from one section to another when the impedance of the section that acts as a load is the complex conjugate of the impedance of the section that acts as a source, where both impedances are measured across the pair of terminals at which the power is transferred, with the other part of the network disconnected.
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References in periodicals archive ?
According to the maximum power transfer theorem the load impedance should be equal to the source impedance.
According to the maximum power transfer theorem [14, 30], the output power Pout will achieve the maximum value if the WPT system satisfies the dual-side conjugate matching equations "[Z.sub.in] = [Z.sup.*.sub.S] and [Z.sub.out] = [Z.sup.*.sub.L]." However, using the proposed frequency-tracking and impedance-matching combined approach, only the transmitter-side can satisfy "[Z.sub.in] = [Z.sup.*.sub.S]." Because no variable IM networks are used in the receiver circuit, "[Z.sub.out] = [Z.sup.*.sub.L]" are not satisfied.