| 摘要 |
Electrically-compensated constant speed drive, CSD, (10) which includes a speed summer (18) having first and second input shafts (20, 36) and one output shaft (22). The first input shaft (20) is coupled to a variable speed prime mover (16) and the output shaft (22) develops a constant speed motive power. A speed-compensating permanent magnet machine (PMM2) couples to the second input shaft (36) of the speed summer (18). A control permanent magnet machine (PMM1) couples to the first input shaft (20) of the speed summer (18). A power converter (30) interconnects the power windings (70, 72) of these two permanent magnet machines (PMM1, PMM2). The power converter (30) comprises first and second bi-directional AC/DC converters (54, 56), a bi-directional DC/DC converter (58), and a circuit (44) for controlling the converters (54, 56, 58) so as to maintain the output shaft (22) of the speed summer (18) at a constant, desired speed. |
