Turbine driven power generating device having DC voltage intermediate circuit and star connected filter capacitors
First Claim
1. A power generating device comprising:
- a generator, which is coupled to a drive unit, and is connected via a rectifier to a DC voltage intermediate circuit, an inverter, which is connected to the DC voltage intermediate circuit and, on the AC voltage output side, has n phases with n AC voltage connections, and a filter arrangement, which is connected to the AC voltage connections, wherein the filter arrangement has a first filter inductance and a second filter inductance, which is connected in series with the first, for each AC voltage connection, and a filter capacitor is connected to the junction point of the first filter inductance and the second filter inductance, wherein the filter capacitors are connected to one another in a star circuit at a star point, wherein the star point is connected to ground potential, wherein a balancing apparatus is provided, which is connected to the DC voltage intermediate circuit and is formed from two series-connected controllable power semiconductor switches, each having a back-to-back parallel-connected diode, and wherein the junction point of the power semiconductor switches is connected to the star point.
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Accused Products
Abstract
A power generating device is specified, which comprises a generator (1), which is coupled to a drive unit, in particular to a turbine, and is connected via a rectifier (2) to a DC voltage intermediate circuit (3), an inverter (4), which is connected to the DC voltage intermediate circuit (3) and, on the AC voltage output side, has n phases with n AC voltage connections (5), and a filter arrangement (6), which is connected to the AC voltage connections (5). Furthermore, the filter arrangement (6) has a first filter inductance (7) and a second filter inductance (8), which is connected in series with the first, for each AC voltage connection (5), with a filter capacitor (9) being connected to the junction point of the first filter inductance (7) and the second filter inductance (8), and the filter capacitors (9) being connected to one another in a star circuit at a star point (10).
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Citations
10 Claims
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1. A power generating device comprising:
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a generator, which is coupled to a drive unit, and is connected via a rectifier to a DC voltage intermediate circuit, an inverter, which is connected to the DC voltage intermediate circuit and, on the AC voltage output side, has n phases with n AC voltage connections, and a filter arrangement, which is connected to the AC voltage connections, wherein the filter arrangement has a first filter inductance and a second filter inductance, which is connected in series with the first, for each AC voltage connection, and a filter capacitor is connected to the junction point of the first filter inductance and the second filter inductance, wherein the filter capacitors are connected to one another in a star circuit at a star point, wherein the star point is connected to ground potential, wherein a balancing apparatus is provided, which is connected to the DC voltage intermediate circuit and is formed from two series-connected controllable power semiconductor switches, each having a back-to-back parallel-connected diode, and wherein the junction point of the power semiconductor switches is connected to the star point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification