| 摘要 |
<p>A first AC power source comprising a power plant ( 18 ), and a second power source, typically grid ( 10 ), are normally connected via a high speed isolation switching means ( 19 ) to provide sufficient AC power to a critical load ( 14 ). The power plant ( 18 ) comprises a power generating means, e.g. a fuel cell, ( 60 ) and a power conditioning system (PCS) ( 62 ) having an inverter ( 64 ). Power assurance means ( 65; 10'', 66, 64, 70; 74, 75 ) is/are operatively connected to at least one of the first and second power sources to enhance an even and continuous supply of power to the critical load ( 14 ). The power assurance means ( 65; 10'', 66, 64, 70; 74, 75 ) is/are operatively connected to the PCS inverter ( 64 ), and may be one, or a combination of, a surge suppression means ( 65 ), a double-conversion power connection means ( 10'', 66, 64, 70 ) having a rectifier ( 66 ); and/or stored energy means ( 74 ), such as a capacitor ( 75 ).</p> |
