Rotor (mounted to capsule) Stator (mounted to tube) Figure 21. Rotor and stator 3D diagram Each accelerator has two 65 MVA inverters, one to accelerate the outgoing capsule, and one to capture the energy from the incoming capsule. Inverters in the 10+ MVA power range are not unusual in mining, drives for large cargo ships, and railway traction. Moreover, 100+ MVA drives are commercially available. Inexpensive semiconductor switches allow the central inverters to energize only the section of track occupied by a capsule, improving the power factor seen by the inverters. The inverters are physically located at the highest speed end of the track to minimize conductor cost.