Vycon Theory of Operation
The VDC140
is designed to work with a UPS system and taps into the same DC
bus for both charging (motoring) and discharging (generating) power.
The VYCON Direct Connect 140 (VDC 140) is a flywheel
energy storage system that consists of two major subsystems:
• The flywheel module, which includes the high strength
steel hub (flywheel rotor), high speed permanent magnet motor/generator,
and a five axis active magnetic bearing system.
• Power Conversion module (converter) A three-phase bi-directional
Insulated Gate Bipolar Transistor (IGBT) bridge (i.e., AC/DC converter)
used for both motoring and generation.
The output and input to the VDC140 is through a DC bus which is
connected to the converter.
The converter creates a sine wave from the DC bus to drive the
flywheel during motoring, and converts the varying sinusoidal
frequency from the flywheel into DC voltage during generation
(i.e.,energy discharge).
Energy is removed from the flywheel rotor by the generator In
the VDC140, the energy discharge occurs between a full operating
speed of 36,000 rpm down to 24,000 rpm capable of providing 140
kW of power for 15 seconds.
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