Low profile drive unit for elevator system
First Claim
1. A drive unit for an elevator system, the drive unit comprising:
- a multilayer, power circuit board;
a first DC link formed in a layer of the power circuit board;
a second DC link formed in a layer of the power circuit board;
a first switch having a first terminal, the first switch mounted to a surface of the power circuit board;
a first via electrically coupling the first terminal to the first DC link;
a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and
a second via electrically coupling the second terminal to the second DC link;
the first via conducting heat from the first switch to the first DC link;
the second via conducting heat from the second switch to the second DC link.
4 Assignments
0 Petitions
Accused Products
Abstract
A drive unit for an elevator system, the drive unit including a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link.
15 Citations
26 Claims
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1. A drive unit for an elevator system, the drive unit comprising:
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a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An elevator system comprising:
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an elevator car to travel along a hoistway, the elevator car distanced from a hoistway wall by a gap; a machine to impart motion to the elevator car; a drive unit for providing drive signals to the machine, the drive unit being sized to fit within the gap between the elevator car and the hoistway wall; and a battery for providing DC power to the drive unit; wherein; the drive unit includes; a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification