Drive unit for driving a motor
First Claim
Patent Images
1. A drive unit comprising:
- a power converter, which is connectable to a working machine, comprising an intermediate circuit, which is coupleable firstly to a first inverter and secondly to a second inverter, wherein the first inverter is designed to be connectable to a motor on an AC voltage side of the first inverter and is connected to the intermediate circuit on a DC voltage side of the first inverter, and wherein the second inverter is connected to the intermediate circuit on a DC voltage side of the second inverter and is connectable to the working machine on an AC voltage side of the second inverter, and wherein the second inverter is designed to drive the working machine in such a way that the working machine is operable either as a motor or as a generator;
a link to at least one energy storage;
a switching unit connected to the power converter, wherein the switching unit is operable in a first operating mode or second operating mode, wherein in the first operating mode the switching unit is designed to couple the power converter to the at least one energy storage in order to enable an energy flow from the at least one energy storage via the switching unit to the intermediate circuit of the power converter and wherein in the second operating mode the switching unit is designed to disconnect the power converter from the at least one energy storage;
wherein the drive unit comprises an energy storage charging unit, which is connectable to the power converter to provide energy to the energy storage,wherein the charging of the energy storage by the energy charging unit is carried out, if the switching unit is in its second operating mode, andwherein the switching unit is designed to couple the power converter to a supply network terminal in order to enable an energy flow from the intermediate circuit of the power converter via the switching unit toward the supply network terminal.
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Accused Products
Abstract
A drive unit for driving and starting a motor in the form of an internal combustion engine designed for driving a traction generator coupled to the motor.
10 Citations
16 Claims
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1. A drive unit comprising:
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a power converter, which is connectable to a working machine, comprising an intermediate circuit, which is coupleable firstly to a first inverter and secondly to a second inverter, wherein the first inverter is designed to be connectable to a motor on an AC voltage side of the first inverter and is connected to the intermediate circuit on a DC voltage side of the first inverter, and wherein the second inverter is connected to the intermediate circuit on a DC voltage side of the second inverter and is connectable to the working machine on an AC voltage side of the second inverter, and wherein the second inverter is designed to drive the working machine in such a way that the working machine is operable either as a motor or as a generator; a link to at least one energy storage; a switching unit connected to the power converter, wherein the switching unit is operable in a first operating mode or second operating mode, wherein in the first operating mode the switching unit is designed to couple the power converter to the at least one energy storage in order to enable an energy flow from the at least one energy storage via the switching unit to the intermediate circuit of the power converter and wherein in the second operating mode the switching unit is designed to disconnect the power converter from the at least one energy storage; wherein the drive unit comprises an energy storage charging unit, which is connectable to the power converter to provide energy to the energy storage, wherein the charging of the energy storage by the energy charging unit is carried out, if the switching unit is in its second operating mode, and wherein the switching unit is designed to couple the power converter to a supply network terminal in order to enable an energy flow from the intermediate circuit of the power converter via the switching unit toward the supply network terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A vehicle comprising a drive unit including:
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a power converter, which is connectable to a working machine, comprising an intermediate circuit, which is coupleable firstly to a first inverter and secondly to a second inverter, wherein the first inverter is designed to be connectable to a motor on an AC voltage side of the first inverter and is connected to the intermediate circuit on a DC voltage side of the first inverter, and wherein the second inverter is connected to the intermediate circuit on a DC voltage side of the second inverter and is connectable to the working machine on an AC voltage side of the second inverter, and wherein the second inverter is designed to drive the working machine in such a way that the working machine is operable either as a motor or as a generator; a link to at least one energy storage; a switching unit connected to the power converter, wherein the switching unit is operable in a first operating mode or second operating mode, wherein in the first operating mode the switching unit is designed to couple the power converter to the at least one energy storage in order to enable an energy flow from the at least one energy storage via the switching unit to the intermediate circuit of the power converter and wherein in the second operating mode the switching unit is designed to disconnect the power converter from the at least one energy storage; wherein the drive unit comprises an energy storage charging unit, which is connectable to the power converter to provide energy to the energy storage, wherein the charging of the energy storage by the energy charging unit is carried out, if the switching unit is in its second operating mode, and wherein the switching unit is designed to couple the power converter to a supply network terminal in order to enable an energy flow from the intermediate circuit of the power converter via the switching unit toward the supply network terminal. - View Dependent Claims (14, 15)
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16. A drive unit comprising:
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a power converter having an intermediate circuit; the intermediate circuit connected to a first inverter and a second inverter; the first inverter connected to a motor; the second inverter connected to a working machine having a first mode and a second mode; in the first mode, the working machine is operated as a motor to supply a torque to start a second motor connected to the working machine; in the second mode, the working machine is operated as a generator; a switching unit connected to the power converter, the switching unit having a first operating mode and a second operating mode; in the first operating mode, the switching unit couples the power converter to an energy storage to enable an energy flow from the energy storage through the switching unit and to the intermediate circuit of the power converter; in the second operating mode, the switching unit connects a supply network terminal to the power converter to enable an energy flow from the intermediate circuit of the power converter, through the switching unit, to the supply network terminal, and the energy storage is connected to an energy storage charging unit.
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Specification