| 摘要 |
<p>A power system and method make highly efficient use of power supplied from a utility (1) to a facility (30). A 110-volt line will commonly supply between 107 to 120 volts. A power system (40) couples energy from the utility to a load circuit (38-1 to 38-n) and may interface with further sources (46) to supply the load circuit. The power system limits output voltage circuit to a preselected nominal level, e.g., 107 volts. Energy provided by the utility which is embodied in voltage above the nominal level is diverted to a charging circuit (74) to charge a storage circuit (76). On command, the storage circuit delivers input power coupled to a waveform generator (88) which produces a mirror of the waveform of the utility voltage as a supplemental AC voltage. The supplemental voltage is provided to the facility circuit either in response to a user-generated control signal, an output level from the storage circuit or in response to load requirements.</p> |
