초록 ▼

An uninterrupted power supply (UPS) system provides power to an electrical load when utility line power fails. When the utility line power is normal a synchronous dynamo serves as a motor, and a first variable-ratio transmission arrangement is combined with a differential gear box to drive a flywhee

An uninterrupted power supply (UPS) system provides power to an electrical load when utility line power fails. When the utility line power is normal a synchronous dynamo serves as a motor, and a first variable-ratio transmission arrangement is combined with a differential gear box to drive a flywheel with very low losses. When the utility line power fails, further variable-ratio transmission components are activated to assist the first transmission in conducting power from the flywheel to the dynamo. The dynamo now acts as a generator to supply power to the load. The invention is characterized by high standby efficiency and by a capability to run the flywheel down to a very low speed before it is unable to continue driving the dynamo.

대표청구항 ▼

[ What is claimed is:] [1.] An uninterrupted power supply system (UPS) for providing electrical power when a primary electrical power source is not functioning normally, said UPS having an electric dynamo and a flywheel, and comprising:a differential having a first shaft connected with said flywheel

[ What is claimed is:] [1.] An uninterrupted power supply system (UPS) for providing electrical power when a primary electrical power source is not functioning normally, said UPS having an electric dynamo and a flywheel, and comprising:a differential having a first shaft connected with said flywheel and a second shaft connected with said dynamo, for transmitting power between said flywheel and said dynamo, and having provision for drivable connection with a differential gear element of said differential;first transmission means having a variable ratio of input and output speeds, connected with one of (a) said flywheel and (b) said dynamo, and drivably connected with said differential gear element, for controlling the ratio of the speed of said dynamo to the speed of said flywheel;auxiliary transmission means having a variable ratio of input and output speeds, drivably connected with said differential gear element and with one of (a) said flywheel and (b) said dynamo, for transmitting power drawn from said flywheel, said auxiliary transmission means comprising at least one auxiliary transmission;interdiction means for interrupting power flow through said auxiliary transmission means to said differential gear element in response to a control signal;sensing means for sensing conditions of the power system and for, in response to said conditions, providing said control signal to said interdiction means to interrupt said power when said primary power source is functioning normally, and to transmit said power when said primary power source is not functioning normally;ratio-control means for controlling said variable speed ratios to control the speed of said flywheel during normal operation of said primary source and to control the speed of said dynamo when said primary source is not functioning normally.