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Switching apparatus

一种开关设备、开关元件的技术，应用在电子开关、变换设备结构零部件、输出功率的转换装置等方向，能够解决电动机的控制设备构造复杂等问题

Active Publication Date: 2012-05-23
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since a control device for a motor reduces noise by adding a capacitor or the like connected to a gate of a switching element, the number of components used for noise reduction increases, and the configuration of a control device for a motor becomes complicated

Method used

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  • Switching apparatus
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Examples

Experimental program
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Embodiment Construction

[0023] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. An exemplary embodiment of the switching device of the present invention comprises a load driving device for driving an inductive load comprising an inductive component.

[0024] figure 1 The circuit configuration of a conventional load driving device is shown. The load driving circuit 11 drives an inductive load including an inductance part L by turning the switching element Q on and off. The load drive circuit 11 includes a loop A11 and a loop A12, and the inductance component L is shared between the loop A11 and the loop A12. When the switching element Q is turned on, the current flows through the loop A, that is, through the inductive load including the inductive component L and the switching element Q in sequence. When the switching element Q is turned off, the current flows through the loop B, that is, through the inductive load including the indu...

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PUM

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Abstract

A switching apparatus is disclosed that includes a first loop circuit configured to include a switching element, an inductive component and a capacitor; and a second loop circuit configured to share the inductive component with the first loop circuit, wherein the capacitor is inserted in series with the inductive component in the first loop, wherein the switching apparatus controls respective currents flowing through the first loop circuit and the second loop circuit in an alternating manner by turning on / off the switching element in order to control the current flowing through the inductive component, and wherein a first magnetic flux generated by the current flowing through the first loop circuit as the switching element is being turned on and a second magnetic flux generated by the current flowing through the second loop circuit as the switching element is being turned off head in the same direction.

Description

technical field [0001] The invention relates to a switching device comprising a first loop and a second loop sharing an inductive component and controlling the current flowing through the inductive component. Background technique [0002] Conventionally, there has been known a control device for a motor that reduces high-frequency noise by arranging a capacitor for absorbing high-frequency noise between a gate of a switching element for PWM control of the motor and an upstream side terminal of the motor , such as radio frequency noise (see, for example, Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open No. H09-42096. [0004] Since a control device for a motor reduces noise by adding a capacitor or the like connected to a gate of a switching element, the number of components used for noise reduction increases, and the configuration of the control device for a motor becomes complicated. Contents of the invention [0005] A general object of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/041H02M1/14H02M3/335H03K17/00
CPCH03K17/041H02M7/003H02M3/155H03K2217/0036
Inventor 内藤隆之今井孝志水谷浩市山野上耕一山本茂树
Owner TOYOTA JIDOSHA KK