A Novel Integral 5-DOFs Hybrid Magnetic Bearing with One Permanent Magnet Ring Used for Turboexpander

<table>The configuration of turboexpander supported by the active magnetic bearings in 5 DOFs. 1: expander wheel; 2: displacement sensor; 3: radial magnetic bearing; 4: thrust magnetic bearing; 5: shaft; 6: touchdown bearing; 7: compressor wheel.</table>

Mathematical Problems in Engineering

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Figure 1

Figure 1: A Novel Integral 5-DOFs Hybrid Magnetic Bearing with One Permanent Magnet Ring Used for Turboexpander 