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This paper describes single-phase uninterruptible power supply (UPS) with active filter and flywheel. The UPS consists of a diode rectifier, a single-phase inverter, a flywheel energy storage unit with PM motor/generator and a three-phase inverter, not using a bulky electrolytic capacitor, battery and filter reactor. It contains many excellent characteristics: small size, lightweight and maintenance-free...
This paper proposes an economical single-phase flywheel uninterruptible power supply (UPS) having active filter across the dc-bus. The proposed UPS consists of diode rectifier, inverters, LC filter and flywheel energy storage unit, and it has many features such as low production cost, long life of the system. The proposed UPS has the active filter ability across the dc-bus, which realizes unity power...
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