Converter system, method, and converter
1 Assignment
0 Petitions
Accused Products
Abstract
A converter system and method, including: at least one supply module, which provides a unipolar, intermediate circuit voltage; one or more drive modules, which may be powered from the intermediate circuit voltage and each include at least one inverter for powering at least one electric motor; and at least one buffer module for storing energy.
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Citations
56 Claims
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1-27. -27. (canceled)
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28. A converter system, comprising:
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at least one supply module configured to provide a unipolar, intermediate circuit voltage;
at least one drive module powerable by the intermediate circuit voltage, each drive module including at least one inverter configured to power at least one electric motor; and
at least one buffer module configured to store energy. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A converter system, comprising:
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at least one supply module configured to provide a unipolar, intermediate circuit voltage;
at least one drive module powerable by the intermediate circuit voltage, each drive module including at least one inverter configured to power at least one electric motor;
at least one buffer module configured to store energy; and
a bus system configured to electrically connect the supply module, the drive module and the buffer module, the bus system including at least two power cables configured to carry the intermediate circuit voltage and a power cable configured to electrically connect the supply module to the buffer module. - View Dependent Claims (49, 50, 51, 52)
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53. A method for operating a buffer module in a converter system, the converter system including at least one supply module configured to provide a unipolar, intermediate circuit voltage, at least one drive module powerable from the intermediate circuit voltage and including at least one inverter configured to power at least one electric motor, and at least one buffer module configured to store energy, comprising:
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measuring the intermediate circuit voltage;
in response to the intermediate circuit voltage exceeding a first critical value, supplying the buffer module with energy when an overall regenerative power of a first drive module exceeds a motive power of a second drive module; and
feeding back energy by the buffer module to drive modules powered by the intermediate circuit voltage when a total motive power of the drive modules exceeds the regenerative power. - View Dependent Claims (54, 55)
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56. A converter, comprising:
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a rectifier configured to generate an intermediate circuit voltage;
an inverter configured to be powered by the intermediate circuit voltage;
a first capacitor not directly connected to the intermediate circuit voltage configured to be energized by an electronic circuit breaker in a controlled manner as a function of the intermediate circuit voltage, the first capacitor configured to release energy to an intermediate circuit; and
a second capacitor directly connected to the intermediate circuit voltage, a capacitance of the first capacitor and a capacitance of the second capacitor configured so that during motive operation at nominal load, with the capacitor directly connected to the intermediate circuit, an a.c. voltage component of the intermediate circuit voltage is less than half an a.c. voltage component with the first capacitor removed.
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Specification