| 摘要 |
FIELD: power engineering. ^ SUBSTANCE: proposed no-break power supply for important power consumers connected to three-phase mains has generator, three-phase rectifier, inverter, DC and AC buses. Rectifier and inverter are series-interconnected through DC buses and form power system isolation unit whose output is connected in parallel with generator to AC bus feeding unimportant power consumers through automatic OFF-operation means and important power consumers, directly. Power capacity of important power consumers should not exceed generator power output, power capacity of all power consumers should not be over generator power output by more than 50%, rectifier and inverter power capacities should not be lower than those of important power consumers; automatic OFF-operation means of unimportant power consumers forms a number of frequency-reduction steps. ^ EFFECT: simplified no-break power supply circuit arrangement, reduced cost of device at same reliability and stability. ^ 1 cl, 1 dwg |
