초록 ▼

A method for providing an uninterruptible power supply to a load both at ordinary times and in an emergency. At ordinary times, commercial AC input power is modulated into high-frequency AC power, which is then applied to a primary winding of a high-frequency transformer having the primary winding,

A method for providing an uninterruptible power supply to a load both at ordinary times and in an emergency. At ordinary times, commercial AC input power is modulated into high-frequency AC power, which is then applied to a primary winding of a high-frequency transformer having the primary winding, a secondary winding and a tertiary winding. High-frequency AC power induced in the secondary winding from the primary winding is demodulated into AC output power, which is then supplied to the load. High-frequency AC power induced in the tertiary winding from the primary winding is rectified into DC power, with which a storage battery is charged. In an emergency, DC power from the storage battery is converted into high-frequency AC power, which is then applied to the tertiary winding. High-frequency AC power induced in the secondary winding from the tertiary winding is averaged, thereby producing AC output power, then the AC output power is supplied to the load.

대표청구항 ▼

[ We claim:] [1.] A method of providing an uninterruptible supply of power to a load during an ordinary times mode and in an emergency mode, said method comprising, during the ordinary times mode, the steps of:modulating commercial AC input power into high-frequency AC power;applying the high-freque

[ We claim:] [1.] A method of providing an uninterruptible supply of power to a load during an ordinary times mode and in an emergency mode, said method comprising, during the ordinary times mode, the steps of:modulating commercial AC input power into high-frequency AC power;applying the high-frequency AC power to a primary winding of a high-frequency transformer having the primary winding, a secondary winding and a tertiary winding;demodulating high-frequency AC power induced in the secondary winding from the primary winding into AC output power which is approximately equivalent to the commercial AC input power and has a waveform similar to that of the commercial AC input power;supplying the AC output power to the load;rectifying high-frequency AC power induced in the tertiary winding from the primary winding into DC power; andcharging a storage battery with the DC power; and said method further comprising, during the emergency mode, the steps of:converting DC power from the storage battery into high-frequency AC power;applying the high-frequency AC power to the tertiary winding;averaging high-frequency AC power induced in the secondary winding from the tertiary winding, thereby producing AC output power; andsupplying the AC output power to the load.