Systems, devices and methods for driving machinery
View Patent ↗Certain exemplary embodiments can comprise a system comprising a channel adapted to guide a coolant, the channel bounded at least in part by an inner channel wall defined by a motor housing adapted to substantially surround a stator of an electric motor, the inner channel wall adapted to conduct, to the coolant, heat generated by the stator.
1. A system comprising:
an electric motor adapted to be directly mechanically coupled to a rotating machine, said electric motor comprising a longitudinal axis about which a shaft of said motor is adapted to rotate, said electric motor comprising:
a bearing control system adapted to actively control a magnetic bearing adapted to levitate said shaft, said bearing control system comprising an electronic circuit board;
a liquid coolant channel adapted to guide a liquid coolant, said liquid coolant channel bounded at least in part by:
an inner channel wall defined by a motor housing adapted to substantially surround a stator of said electric motor, said inner channel wall adapted to conduct, to said liquid coolant, heat generated by said stator; and
an outer channel wall adapted to conduct, to said liquid coolant, heat generated by said electronic circuit board, said outer channel wall further adapted to substantially circumferentially surround said liquid coolant channel.
2. The system of claim 1 , wherein:
said bearing control system is adapted to adjust a stiffness of said magnetic bearing.
3. The system of claim 1 , wherein:
said bearing control system is adapted to adjust a damping of said magnetic bearing.
4. The system of claim 1 , wherein:
said outer channel wall adapted to conduct, to said liquid coolant, heat generated by an electronic circuit board comprised by a rotational control system adapted to control rotation of said shaft.
5. The system of claim 1 , wherein:
said motor is electronically commutated.
6. The system of claim 1 , wherein:
said shaft is adapted to rotate approximately 20,000 revolutions per minute or greater.
7. The system of claim 1 , further comprising:
said magnetic bearing.
8. The system of claim 1 , further comprising:
a non-magnetic bearing adapted to support said shaft when said magnetic bearing is not operating.
9. The system of claim 1 , further comprising:
said stator.
10. The system of claim 1 , further comprising:
said rotating machine.
11. The system of claim 1 , wherein:
said rotating machine is a compressor.
12. The system of claim 1 , wherein:
said rotating machine comprises multiple impellers.
13. The system of claim 1 , wherein:
said rotating machine is a fan.
14. The system of claim 1 , wherein:
said rotating machine is a turbine.
15. The system of claim 1 , wherein:
said rotating machine is a pump.
16. The system of claim 1 , further comprising:
a baffle adapted to be positioned in said liquid coolant channel and adapted to guide flow of said liquid coolant.
17. The system of claim 1 , further comprising:
a pump adapted to circulate said liquid coolant.
18. The system of claim 1 , further comprising:
a heat exchanger adapted to remove heat from said liquid coolant.
19. A system comprising:
an electronic circuit board comprised by a bearing control system, said bearing control system adapted to actively control a magnetic bearing adapted to levitate a shaft of an electric motor adapted to be directly mechanically coupled to a rotating machine, said shaft comprising a longitudinal axis about which said shaft is adapted to rotate; and
a liquid coolant channel adapted to guide a liquid coolant, said liquid coolant channel bounded at least in part by:
an inner channel wall defined by a motor housing adapted to substantially surround a stator of said electric motor, said inner channel wall adapted to conduct, to said liquid coolant, heat generated by said stator; and
an outer channel wall adapted to conduct, to said liquid coolant, heat generated by said electronic circuit board, said outer channel wall further adapted to substantially circumferentially surround said liquid coolant channel.
20. A system comprising:
a liquid coolant channel adapted to guide a liquid coolant, said liquid coolant channel bounded at least in part by:
an inner channel wall defined by a motor housing adapted to substantially surround a stator of an electric motor, said inner channel wall adapted to conduct, to said liquid coolant, heat generated by said stator; and
an outer channel wall adapted to conduct, to said liquid coolant, heat generated by an electronic circuit board comprised by a bearing control system, said outer channel wall further adapted to substantially circumferentially surround said liquid coolant channel, said bearing control system adapted to actively control a magnetic bearing adapted to levitate a shaft of said electric motor, said electric motor adapted to be directly mechanically coupled to a rotating machine, said shaft comprising a longitudinal axis about which said shaft is adapted to rotate.
21. The system of claim 1 , wherein:
said liquid coolant channel is substantially helical in shape.
22. The system of claim 1 , wherein:
said liquid coolant channel is adapted to induce a substantially helical flow pattern in said liquid coolant.
23. The system of claim 1 , wherein:
said liquid coolant channel is substantially helical in shape and machined into said inner channel wall.
24. The system of claim 1 , wherein:
said liquid coolant channel is substantially helical in shape and sealed by a mounting collar comprising said outer channel wall.