Power compensation effect of an adjustable-speed rotary condenser with a flywheel for a large capacity magnet power supply

Direct connection of the synchrotron magnet power supply to the utilities causes the effect of pulsed reactive and active power in the AC line. Conventionally, Static Var Control system compensates the reactive power generated by the thyristor converter to reduce the flicker in the power line. However, it is necessary to control not only a reactive power but also an active power for the future large scale synchrotron magnet power supply in order to reduce the dissipation power and to realize the stabilization in the AC line. An adjustable-speed rotary condenser is capable of not only reactive power control but also active power control since it utilize a flywheel effect of the rotor. Research and development on these problems are now under going using a model system of 7.5 kW rotary condenser with flywheel (GD²=3kg-m²). Control and characteristic of an adjustable-speed rotary condenser and the experiment results will be presented