公开(公告)号：US20200072278A1

公开(公告)日：2020-03-05

申请号：US16676986

申请日：2019-11-07

Applicant: Ingersoll-Rand Company

Inventor： Lauri Juhani Salmia ,  Juha T. Saari ,  Petri J. Maki-Ontto ,  Risto Komulainen

IPC: F16C32/04

Abstract: Unique systems, methods, techniques and apparatuses of active magnetic bearing control systems are disclosed. One exemplary embodiment is a power converter electrically coupled to an active magnetic bearing (AMB) having a plurality of windings, the power converter comprising a DC bus, two capacitors, a first leg, a second leg, and a controller. The capacitors are electrically coupled in series between the positive rail and negative rail, one capacitor being electrically coupled to the other capacitor at a midpoint connection. The first leg comprises a first semiconductor switching device and a first output node. The second leg comprises a second semiconductor switching device and a second output node. The first output node is electrically coupled to the midpoint connection by way of a first AMB winding and the second output node is electrically coupled to the midpoint connection by way of a second AMB winding.

公开(公告)号：US20190273477A1

公开(公告)日：2019-09-05

申请号：US15909539

申请日：2018-03-01

Applicant: Ingersoll-Rand Company

Inventor： Lauri Juhani Salmia ,  Petri J. Maki-Ontto ,  Risto Komulainen

IPC: H03F3/217 ,  F16C32/04 ,  H02K7/09

Abstract: Unique systems, methods, techniques and apparatuses of power amplifiers are disclosed. One exemplary embodiment is a power system for an active magnetic bearing including at least one power amplifier. Each power amplifier includes a first semiconductor device including a first node coupled to a neutral point node and a second node, a second output node coupled to the neutral point node, a second semiconductor device including a first node coupled to the second node of the first semiconductor device and a second node coupled to a first output node, a third semiconductor device including a first node coupled to a first DC bus node and a second node coupled to the first output node, and a fourth semiconductor device including a first node coupled to a second DC bus node and a second node coupled to the second node of the first semiconductor device.

公开(公告)号：US10742179B2

公开(公告)日：2020-08-11

申请号：US15909539

申请日：2018-03-01

Applicant: Ingersoll-Rand Company

Inventor： Lauri Juhani Salmia ,  Petri J. Maki-Ontto ,  Risto Komulainen

IPC: H03F1/30 ,  H03F3/217 ,  H02K7/09 ,  F16C32/04

Abstract: Unique systems, methods, techniques and apparatuses of power amplifiers are disclosed. One exemplary embodiment is a power system for an active magnetic bearing including at least one power amplifier. Each power amplifier includes a first semiconductor device including a first node coupled to a neutral point node and a second node, a second output node coupled to the neutral point node, a second semiconductor device including a first node coupled to the second node of the first semiconductor device and a second node coupled to a first output node, a third semiconductor device including a first node coupled to a first DC bus node and a second node coupled to the first output node, and a fourth semiconductor device including a first node coupled to a second DC bus node and a second node coupled to the second node of the first semiconductor device.

公开(公告)号：US20170307013A1

公开(公告)日：2017-10-26

申请号：US15136153

申请日：2016-04-22

Applicant: Ingersoll-Rand Company

Inventor： Lauri Juhani Salmia ,  Juha Tuomas Saari ,  Petri Juhani Maki-Ontto ,  Risto Komulainen

IPC: F16C32/04

CPC classification number: F16C32/0457 ,  F16C32/0448

Abstract: Unique systems, methods, techniques and apparatuses of active magnetic bearing control systems are disclosed. One exemplary embodiment is a power converter electrically coupled to an active magnetic bearing (AMB) having a plurality of windings, the power converter comprising a DC bus, two capacitors, a first leg, a second leg, and a controller. The capacitors are electrically coupled in series between the positive rail and negative rail, one capacitor being electrically coupled to the other capacitor at a midpoint connection. The first leg comprises a first semiconductor switching device and a first output node. The second leg comprises a second semiconductor switching device and a second output node. The first output node is electrically coupled to the midpoint connection by way of a first AMB winding and the second output node is electrically coupled to the midpoint connection by way of a second AMB winding.