Environmental Engineering Reference
In-Depth Information
(a)
(b)
(c)
(d )
(e)
(f)
Figure 5.16 Types of electric machines for hybrid propulsion M/G: (a) surface
permanent magnet (SPM), (b) interior permanent magnet (IPM),
(c) induction machine (IM), (d) interior PM - flux squeeze,
(e) synchronous reluctance, SyncRel and (f) variable reluctance
machine (VRM)
continuous usage, so that putting more iron into the design permits operation at high
flux levels for efficient inverter and battery operation. When high torque is
demanded, the machine currents are driven to high values, but generally for short
durations such as 10-30 s, and to somewhat lower values for up to 3 min. The fact
