| 摘要 |
PCT No. PCT/DE96/00473 Sec. 371 Date Jan. 16, 1997 Sec. 102(e) Date Jan. 16, 1997 PCT Filed Mar. 19, 1996 PCT Pub. No. WO96/37947 PCT Pub. Date Nov. 28, 1996The voltage supply device for the motor vehicle electrical system includes e.g. a self- or separately-excited generator having stator windings (10,11,12) and an excitation coil (E); a main bridge rectifier device connected to the stator windings having a first connector (B+) at which a first voltage (UB+) is delivered; an exciter bridge rectifier device connected to the stator windings; an exciter voltage regulator device connected between the exciter bridge rectifier device and the excitation coil (E) for regulation of an excitation current passing through the excitation coil; an additional rectifier device connected to the stator windings (10,11,12) having a second connector (B2+) at which a second voltage (UB2+) is tapped and a device for regulating a load current delivered by the generator to the first connector (B+) or the second connector (B2+) that includes a thyristor (Th0,Th4) connected to the first or second connector and a triggering device (A) whereby the generator has an optimal power output. During full load operation the load current is limited with the load current regulating device, while during partial load operation the exciter current is regulated by the exciter voltage regulator device. The invention can also be applied to voltage supply systems with permanently excited generators.
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