| 摘要 |
FIELD: electrical engineering. ^ SUBSTANCE: proposed method that can be used in off-line power supply systems feeding railway cars equipped with self-excited generators for regulating generator field current includes generator disconnection, selection of pulses arriving from pulse-width modulator with respect to their length, as well as de-energizing of field coil and de-excitation of generator in case pulse length is not kept within desired range. To this end single clocking failures are corrected and generator serviceability is recovered. ^ EFFECT: reduced transients, enlarged service life of switching devices, enhanced operating reliability, reduced mass, size, and cost, unambiguous trouble location. ^ 1 cl, 1 dwg |
