DEVICE POWER CONTROLLER AND METHOD OF ADAPTIVE PROVISION OF OUTPUT VOLTAGE AND OUTPUT CURRENT, WHICH TOGETHER SUPPORT SUBSTANTIALLY PERMANENT OUTPUT ELECTRIC POWER

摘要

FIELD: electricity.;SUBSTANCE: controller (120) comprises inputs (121) to receive inlet power P_I, outputs (122) to ensure substantially permanent output power P_O for load L with variable impedance, and a communication line (126) to receive voltage V_L at load. The device power controller (120) is configured to determine input voltage V_I and inlet current I_I to detect existing resistance R_L of the load L and to set output voltage V_O and output current Io on the basis of input voltage V_I, input current II and existing resistance R_L. Output voltage V_O substantially does not depend on input voltage V_I. Output voltage V_O and output current I_O vary to maximize power at load P_L to maintain substantially permanent output electric power P_O.;EFFECT: reliability improvement.;31 cl, 7 dwg