358 Ë 9 HTS Maglev bearing and flywheel energy storage system
Fig. 9.26:Complete test system of HTS FESS.
(1) Cryogenic refrigerator. (2) Power cabinet.
(3) Control and test system. (4) Vacuum pump.
(5) HTS FESS unit. (6) Frequency converter.
(7) Radiator of the water chilling system.
(8) Circulating water cooling machine.motor. The radiator (7) and water cooling machine (8) constitute the circulating water
chilling system, which is used to eliminate heat produced by the PM synchronous
motor and the refrigerator. The HTS FESS unit (5) is connected to the refrigerator,
the vacuum pump and the frequency converter cryogenic cooling, vacuum and speed
modulation, respectively, as shown in Fig. 9.27.
The control and test system (3) was developed by J. S. Wang et al. It is used not
only to operate the HTS FESS, but also to test its performance. The levitation forces,
guidance forces, and force relaxation can be measured by this system. Furthermore,
the vibration and temperature characteristics are also measured and supervised by
this system, if any vibration or temperature signals exceed the threshold value, the
control system will stop the operation of the HTS FESS promptly.
Fig. 9.27:Connection status of HTS FESS unit.