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A loss free resistor (LFR) is a resistor that does not lose energy. The first implementation is due to Singer 〔Singer, S, "Realization of Loss Free Resistive Elements", ''IEEE Transactions on Circuits and Systems'', Vol. CAS-37, No. 1, pp. 54-60, January 1990.〕 and it has been implemented in various settings. 〔 Robert W. Erickson, Dragan Maksimovic, ''Fundamentals of Power Electronics'', Springer, 2nd ed. 2001.〕 〔Erickson, R., Madigan, M., Singer, S., "Design of a simple high-power-factor rectifier based on the flyback converter", Applied Power Electronics Conference and Exposition, 1990. APEC '90.〕 〔Singer, S, "The application of loss-free resistors in power processing circuits", ''IEEE Transactions on Power Electronics'', (Volume:6, Issue:4) Oct 1991, pp. 595-600.〕 〔L. Martinez-Salamero, N. Parody, Abdelali El Aroudi, "Analysis and design of a loss-free resistor based on a boost converter in PWM operation", ISCAS 2010: 2742-2745.〕 〔A. Cid-Pastor, L. Martinez-Salamero, A. El Aroudi, R. Giral, J. Calvente, R. Leyva, "Synthesis of loss-free resistors based on sliding-mode control and its applications in power processing", ''Control Engineering Practice'', Volume 21, Issue 5, May 2013, pp. 689–699.〕 〔A. Marcos-Pastor, E. Vidal-Idiarte, A. Cid-Pastor, L. Martinez-Salamero, "Digital Loss-Free Resistor for power factor correction applications", Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE.〕 == Overview == Many power processing systems can be improved by the application of resistive elements. Resistors may be applied for waveshaping, damping of oscillatory waveforms, stabilization of nonstable systems, and power flow balancing. The losses involved by the application of conventional resistors may be eliminated by the synthesis of artificial, loss-free resistive elements which replace the conventional ones. The conventional resistor converts the electrical energy absorbed at its terminals into heat; however, it has been found that creation of a resistive characteristic is not necessarily followed by such energy conversion.〔 It is possible to synthesize a Loss-Free Resistor (LFR) by the combination of a switched mode converter and a suitable control circuit. The LFR is a two-port element that has a resistive i-v curve at the input terminals. The power absorbed at the input is transferred to the source that powers the total system, so in principle no losses occur. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Loss free resistor」の詳細全文を読む スポンサード リンク
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