This paper

aiming at the characteristics of flywheel energy storage and AC-excited motors

designs an 11MVA high-inertia energy storage AC-excited synchronous condenser with both strong voltage support and the ability of large slip variable-speed operation. Based on the field-circuit coupling finite element platform

a simulation model of this condenser is established. The electromagnetic performance of the condenser is calculated using this simulation model

which includes drawing no-load and short-circuit characteristic curves

studying load characteristics

calculating reactance parameters

and simulating short-circuit faults. By comparing with the design values

the feasibility of this simulation method is verified. At the same time

it also provides experience and theoretical reference for the optimized design of a high-inertia energy storage AC-excited synchronous condenser.