| 摘要 |
<p>POWER CONVERTERS The present invention is a power converter for interfacing a motor that requires a variable voltage at variable frequency to a supply network (bus) providing a nominally fixed voltage and nominally fixed frequency. It includes a first and second active rectifier/inverters both of which include a plurality of semiconductor power switching devices, a first controller using a dc link voltage demand signal indicative of a desired dc link voltage to control the semiconductor powered devices of the first active rectifier/inverter, and a second controller using a power demand signal indicative of the level of power to be transferred and a voltage demand signal indicative of the voltage to be achieved to control the semiconductor powered devices of the second active rectifier/inverter to achieve the desired levels of power and voltage that correspond to the power and voltage demand signals. The power converter can be employed in a marine propulsion system.</p> |
