Assembly comprising a three-phase machine and a frequency converter
First Claim
1. Arrangement with a three-phase a.c. machine and a frequency converter comprising:
- the three-phase a.c. machine, including a stator and a rotor, whereby at least the three electric circuits of the stator and/or the rotor for the three three-phase a.c. phases are insulated from one another in operation with one separate connecting point of the stator and/or the rotor each corresponding to the connecting point of the frequency converter, andthe frequency converter being a midpoint-grounded d.c. intermediate circuit, in such a way that for each electric circuit, an electric voltage or current that is symmetrical relative to the ground potential can be output between the two corresponding connecting points.
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Accused Products
Abstract
Disclosed is an assembly encompassing a three-phase machine and a frequency converter. Said assembly has the following characteristics: the three-phase machine comprises a stator and a rotor; at least the three circuits of the stator and/or the rotor can be operated in an insulated manner relative to each other for the three phases of the rotary current while being connectable to one separate terminal point of the frequency converter, respectively, so as to be insulated relative to each other; and the frequency converter is embodied with a D.C. link having a grounded neutral in such a way that a voltage or current which is symmetric regarding the potential to ground can be output at any moment between the two associated terminal points of each circuit.
22 Citations
15 Claims
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1. Arrangement with a three-phase a.c. machine and a frequency converter comprising:
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the three-phase a.c. machine, including a stator and a rotor, whereby at least the three electric circuits of the stator and/or the rotor for the three three-phase a.c. phases are insulated from one another in operation with one separate connecting point of the stator and/or the rotor each corresponding to the connecting point of the frequency converter, and the frequency converter being a midpoint-grounded d.c. intermediate circuit, in such a way that for each electric circuit, an electric voltage or current that is symmetrical relative to the ground potential can be output between the two corresponding connecting points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification