POWER TRANSFER APPARATUS AND METHODS

摘要

In a method of and apparatus for converting energy from natural energy sources into a more useable form of energy such as electrical energy, a sensor 10 is acted upon by the external energy source to cause movement of the sensor. Movement 10 of the sensor 10 is converted into a second form of energy such as electrical energy. A variable force is applied to the sensor 10, preferably under the control of one or more PECs 16. The variable force is inter alia controlled to achieve a desired load impedance of the sensor in order to maximise the efficiency of power transfer.