Electronic power converter for mobile working machine, mobile working machine and method for controlling the electronic power converter

A working machine, electric power technology, applied in the output power conversion device, the irreversible DC power input is converted into the AC power output, the DC power input is converted into the DC power output and other directions, which can solve the problems of complicated controller operation and so on.

Active Publication Date: 2014-03-26
DANFOSS MOBILE ELECTRIFICATION OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fact that the electrical energy stored by an inductive circuit is directly proportional to the square of the current and the electrical energy stored by a capacitive circuit is directly proportional to the square of the voltage may in some cases complicate the operation of the controller

Method used

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  • Electronic power converter for mobile working machine, mobile working machine and method for controlling the electronic power converter
  • Electronic power converter for mobile working machine, mobile working machine and method for controlling the electronic power converter
  • Electronic power converter for mobile working machine, mobile working machine and method for controlling the electronic power converter

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Embodiment Construction

[0030] figure 1 A schematic illustration of an electromechanical power transmission chain including an electric power converter is shown according to an exemplary embodiment of the invention. The electromechanical power transmission chain includes: a generator 106 driven using an internal combustion engine 105 ; an electric motor 107 connected to a mechanical load 108 ; and, an electrical power converter between the generator 106 and the motor 107 . The electric power converter comprises: a first electric power converter stage 102 connected to a stator winding of a generator 106; a second electric power converter stage 104 connected to a stator winding of an electric motor 107; and a storage circuit 101 capable of storing electric energy, And connected to first and second electric power converter stages 102 and 104 . exist figure 1 In the exemplary case shown in , the storage circuit 101 is a capacitive intermediate circuit, and the electrical energy E stored by the storage ...

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PUM

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Abstract

The present invention relates to an electronic power converter for a mobile working machine, the mobile working machine and a method for controlling the electronic power converter. The electronic power converter comprises a storage circuit (101) capable of storing electrical energy that is determined by an electrical quantity, voltage or current, of the storage circuit. The electronic power converter comprises an electronic power converter stage (102) connected to the storage circuit and a regulator (103) for controlling the electronic power converter stage to regulate the electrical quantity at least partly on the basis of deviation of the electrical quantity from its reference level. The regulator is configured to weight the deviation with a first gain coefficient when the deviation is positive, and to weight the deviation with a second gain coefficient when the deviation is negative. The first gain coefficient has a value different from that of the second gain coefficient because the reference level is typically not in the middle of the allowed range of variation of the electrical quantity.

Description

technical field [0001] The invention relates to an electric power converter suitable for electromechanical power transmission chains of mobile working machines. The invention also relates to a method and a computer program for controlling an electric power converter. Furthermore, the invention relates to a mobile work machine comprising an electromechanical power transmission chain. Background technique [0002] An electromechanical power transmission chain typically includes one or more electric motors and an electrical power converter. The electromechanical power transmission chain may be a series of transmission chains in which one of the electric machines operates as a generator and the electric power converter is arranged to convert the voltage produced by the generator to a voltage of magnitude and frequency voltage. An internal combustion engine may be used to drive the generator, which may for example be a diesel engine, an Otto cycle engine or a turbine engine. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/48H02M3/00
CPCH02M7/44
Inventor 安蒂·塔科埃勒恩
Owner DANFOSS MOBILE ELECTRIFICATION OY
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