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Method and circuit for optimizing capacitance used in an intermediate circuit

An intermediate circuit, circuit technology, applied in circuits or fluid pipelines, battery/battery traction, DC circuits to reduce harmonics/ripples, etc.

Active Publication Date: 2017-09-29
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no known solution to the conflict between high efficiency and dynamic imperfections as it increases for the active introduction of electrical energy into or out of the high voltage vehicle circuit

Method used

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  • Method and circuit for optimizing capacitance used in an intermediate circuit
  • Method and circuit for optimizing capacitance used in an intermediate circuit
  • Method and circuit for optimizing capacitance used in an intermediate circuit

Examples

Experimental program
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Embodiment Construction

[0023] image 3A circuit 100 according to the invention is shown, which can be used, for example, for smoothing voltage ripples in direct voltage high voltage (HV) vehicle circuits. The connection point 8 coincides with the high-voltage potential of the DC voltage on-board circuit and with the high-voltage-side connection of the capacitor C0. The connection point 9 is arranged to be connected on the ground side to a capacitor C0, to which a first resistor R1 is connected. On the other hand, the resistor R1 is connected to the second resistor R2 at the connection point 4 . On the other hand, the second resistor R2 is connected to the third resistor R3 at the connection point 5 . On the other hand, the third resistor R3 is connected to the fourth resistor R4 at the connection point 6 . On the other hand, the fourth resistor R4 is connected to the connection point 7 which coincides with the electrical ground 10 . An acquisition unit C1 , R5 , 12 is at the connection point 8 w...

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PUM

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Abstract

The invention relates to a circuit and method for optimizing a capacitor used in an intermediate circuit. The intermediate circuit has a connecting end connected with the high-voltage side of the capacitor and a connecting end at a ground side, is equipped with an acquiring unit for acquiring a change in the voltage in a first part of the circuit as well as a balancing unit. The balancing unit is configured to at least partly balance the change by feeding electricity into the connecting end at the ground side. To this end, the balancing unit includes an analog amplifier and a digital amplifier, wherein an output end of the analog amplifier is used for providing an input variable for the digital amplifier.

Description

technical field [0001] The invention relates to a method and a circuit for optimizing the capacitance used in an intermediate circuit. In this case, the invention relates in particular to an intermediate circuit for a power supply circuit of a vehicle in which voltage ripples can occur between an energy store and a motor-side inverter. Background technique [0002] The electrification of more and more private transport has led to significantly higher voltages (400V or more in the range) in electrically propellable vehicles and is yet to be dealt with, just as it was until a few years ago in vehicles The same as in the car circuit. When energy storage as DC voltage is realized in (mostly electrochemical) accumulators, an inverter (DC voltage-AC voltage converter) is usually used to supply the electric motor (or generator) with a (three-phase) AC voltage or transfer of AC voltage from the (generator-fed) electric motor to the electrochemical energy store. Via the inverter, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/14B60R16/03B60L11/18
CPCB60L50/51B60L2210/10H02J1/02Y02T10/70Y02T10/72
Inventor S·布茨曼
Owner ROBERT BOSCH GMBH
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