| 摘要 |
<p>PURPOSE:To realize downsizing and simplification of excitation controller by employing two-phase secondary winding in place of three-phase secondary winding comprising two windings crossing perpendicularly in an AC-excited synchronous machine comprising a wound-rotor induction machine thereby simplifying a frequency converter and an exciting transformer by one phase. CONSTITUTION:In an AC-excited synchronous machine 1 having a rotor, i.e., a secondary winding 1a, comprising two windings crossing perpendicularly and a stator 1b, a two-phase secondary winding 1a is employed and subjected to AC excitation of variable frequency through two frequency converters 17. Rotational angle frequency omegar detected through a speed detector 2 and a primary frequency omega1 detected through a frequency detector 4 are fed to an adder and subtractor 3 where slip angle frequencies omega2d, omega2q of the AC-excited synchronous machine 1 are determined. Output from the adder and subtractor 3 is fed, together with outputs from current converters 7a, 7b for detecting current of the secondary winding 1a, i.e., a flux component current i2d and a torque component current i2q, to a vector filter 5 in order to correct a command fed from a command operating unit 14.</p> |
