JP2008072781A - Compressor controller - Google Patents

Compressor controller Download PDF

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JP2008072781A
JP2008072781A JP2006246509A JP2006246509A JP2008072781A JP 2008072781 A JP2008072781 A JP 2008072781A JP 2006246509 A JP2006246509 A JP 2006246509A JP 2006246509 A JP2006246509 A JP 2006246509A JP 2008072781 A JP2008072781 A JP 2008072781A
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current
voltage
compressor
detected
detection means
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Japanese (ja)
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Hitoshi Masuda
仁史 増田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2006246509A priority Critical patent/JP2008072781A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a compressor controller for ensuring accurate current control by correcting a gap occurring between a current value detected by a current detection means when the power supply voltage is varied and the value on a data table obtained by performing A/D conversion on the current value. <P>SOLUTION: A voltage detected by a voltage detection means 3 is compared with a reference value, and a current correction means 6 corrects a current value detected by a current detection means 5 by a predetermined value depending on the fact whether the detected voltage is beyond the reference value or not. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は圧縮機制御装置に関するものである。   The present invention relates to a compressor control device.

従来は図３に示すように、ダイオードブリッジ４の交流入力ラインに流れる電流を、電流検出手段５を用いて検出した電流値で圧縮機１の制御を行う。その制御は、図４に示すような前記電流検出手段５で検出した電流値とこの電流値をＡＤ変換したデータ表を用いている（例えば、特許文献１参照）。
特開平４−５５６４８号公報 Conventionally, as shown in FIG. 3, the compressor 1 is controlled with the current value detected by using the current detection means 5 for the current flowing through the AC input line of the diode bridge 4. The control uses a current value detected by the current detection means 5 as shown in FIG. 4 and a data table obtained by AD-converting the current value (see, for example, Patent Document 1).
JP-A-4-55648

しかしながら、前記従来の圧縮機制御装置では、定格の電源電圧のときの前記電流検出手段５で検出した電流値とこの電流値をＡＤ変換したデータとの対応表をもとに前記圧縮機制御装置を制御しているため、電源電圧が変動すると前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータ表にズレが発生するため、正確な電流制御が不可能になるという課題を有していた。   However, in the conventional compressor control device, the compressor control device is based on the correspondence table between the current value detected by the current detection means 5 at the rated power supply voltage and the data obtained by AD conversion of the current value. Therefore, when the power supply voltage fluctuates, a deviation occurs between the current value detected by the current detection means and the data table obtained by AD-converting the current value, so that accurate current control becomes impossible. Had.

本発明は、前記従来の課題を解決するもので、正確な電流制御が可能にすることを目的とする。   The present invention solves the above-described conventional problems, and an object thereof is to enable accurate current control.

前記従来の課題を解決するために、本発明の圧縮機制御装置は電圧検出手段によって検出した電圧を基準値と比較して基準値以上か否かで前記電流検出手段によって検出した電流値を所定値で補正する電流値補正手段を設けたものである。   In order to solve the conventional problem, the compressor control device of the present invention compares the voltage detected by the voltage detection means with a reference value, and determines the current value detected by the current detection means based on whether the voltage is equal to or higher than the reference value. Current value correcting means for correcting with values is provided.

これによって、電源電圧が変動したときに前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータ表に生じるズレを補正し、正確な電流制御を可能とすることができる。   As a result, it is possible to correct the current value detected by the current detection means when the power supply voltage fluctuates and the deviation generated in the data table obtained by AD conversion of the current value, thereby enabling accurate current control.

本発明の圧縮機制御装置は、電源電圧が変動したときに前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータ表に生じるズレを補正し、正確な電流制御を可能とすることができるため、過電流での圧縮機の損傷を回避することができる。   The compressor control device according to the present invention corrects the current value detected by the current detection means when the power supply voltage fluctuates and the deviation generated in the data table obtained by AD converting the current value, thereby enabling accurate current control. Therefore, damage to the compressor due to overcurrent can be avoided.

第１の発明は、電動機を駆動源とする圧縮機において、前記圧縮機を駆動するインバータ駆動手段と、前記インバータ駆動手段に供給される電圧を検出する電圧検出手段と、電源電圧を整流して前記インバータ駆動手段に供給される電圧を供給するダイオードブリッジと、前記ダイオードブリッジの交流入力ラインに流れる電流を検出する電流検出手段と、前記電圧検出手段によって検出した電圧を基準値と比較して基準値以上か否かで前記電流検出手段によって検出した電圧を所定値で補正する電流値補正手段とを備えたことを特徴とした圧縮機制御装置とすることで、電源電圧が変動したときに前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータのズレを補正することが可能となる。   According to a first aspect of the present invention, in a compressor using an electric motor as a drive source, inverter drive means for driving the compressor, voltage detection means for detecting a voltage supplied to the inverter drive means, and rectifying a power supply voltage A diode bridge for supplying a voltage to be supplied to the inverter driving means, a current detecting means for detecting a current flowing in an AC input line of the diode bridge, and comparing the voltage detected by the voltage detecting means with a reference value as a reference A compressor control device comprising a current value correcting unit that corrects a voltage detected by the current detecting unit with a predetermined value depending on whether the value is equal to or greater than a value, so that when the power supply voltage fluctuates, It is possible to correct the deviation between the current value detected by the current detection means and the data obtained by AD conversion of the current value.

第２の発明は、前記電流値補正手段において所定値で補正を行った前記電流検出手段によって検出した電流値を用いて圧縮機を動作させることを特徴とした請求項１記載の圧縮
機制御装置とすることで、電源電圧が変動したときに前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータ表のズレを補正することが可能となり、正確な電流制御が可能となる。 2. The compressor control device according to claim 1, wherein the compressor is operated using the current value detected by the current detection means corrected by a predetermined value in the current value correction means. By doing so, it is possible to correct the deviation between the current value detected by the current detection means when the power supply voltage fluctuates and the data table obtained by AD conversion of this current value, and accurate current control becomes possible.

第３の発明は、前記圧縮機始動前に、前記電圧検出手段で電圧を検出することを特徴とした請求項１記載の圧縮機制御装置とすることで、電源電圧が変動したときに前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータ表にズレを正確に補正することが可能となる。   According to a third aspect of the present invention, in the compressor control device according to claim 1, the voltage is detected by the voltage detection means before the compressor is started. It is possible to accurately correct the deviation between the current value detected by the detecting means and the data table obtained by AD conversion of the current value.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の実施の形態により構成された圧縮機制御装置を示す図である。
本図のように構成された圧縮機制御装置について、以下その動作、作用を説明する。 (Embodiment 1)
FIG. 1 is a diagram showing a compressor control device configured according to an embodiment of the present invention.
The operation and action of the compressor control device configured as shown in the figure will be described below.

圧縮機１を駆動するインバータ駆動手段２と、前記インバータ駆動手段２に供給される電圧を検出する電圧検出手段３と、電源電圧７を整流して前記インバータ駆動手段２に供給される電圧を供給するダイオードブリッジ４と、前記ダイオードブリッジ４の交流入力ラインに流れる電流を検出する電流検出手段５と、前記電圧検出手段３によって検出した電圧を基準値と比較して基準値以上か否かで前記電流検出手段５によって検出した電流値を所定値で補正する電流値補正手段６とを備えたことを特徴とした圧縮機制御装置である。   Inverter drive means 2 for driving the compressor 1, voltage detection means 3 for detecting the voltage supplied to the inverter drive means 2, and a voltage supplied to the inverter drive means 2 by rectifying the power supply voltage 7 The diode bridge 4 that detects the current flowing through the AC input line of the diode bridge 4, and the voltage detected by the voltage detector 3 is compared with a reference value to determine whether the voltage is equal to or higher than a reference value. The compressor control device includes a current value correction unit 6 that corrects a current value detected by the current detection unit 5 with a predetermined value.

本発明は、図４に示すように、電源電圧７が変動したときの前記電流検出手段５で検出した電流値とこの電流値をＡＤ変換したデータとの対応のように、電源電圧が変動したときに前記電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータ表に生じるズレを補正することができる。   In the present invention, as shown in FIG. 4, the power supply voltage fluctuates as shown in the correspondence between the current value detected by the current detecting means 5 when the power supply voltage 7 fluctuates and the data obtained by AD-converting the current value. It is sometimes possible to correct a deviation occurring in the current value detected by the current detection means and the data table obtained by AD conversion of the current value.

これによって、正確な電流制御を可能とすることができ、過電流での圧縮機３の損傷を回避することができる。   Thus, accurate current control can be performed, and damage to the compressor 3 due to overcurrent can be avoided.

（実施の形態２）
本実施の形態では、前記電流値補正手段６において所定値で補正を行った前記電流検出手段５によって検出した電流値を用いて圧縮機３を動作させることを特徴とした圧縮機制御装置である。 (Embodiment 2)
In this embodiment, the compressor control apparatus is characterized in that the compressor 3 is operated using the current value detected by the current detection means 5 corrected by a predetermined value in the current value correction means 6. .

電源電圧７が変動したときに前記電流検出手段５で検出した電流値とこの電流値をＡＤ変換したデータ表のズレを補正することが可能となり、正確な電流制御が可能とすることができ、過電流での圧縮機３の損傷を回避することができる。   It is possible to correct the deviation between the current value detected by the current detection means 5 when the power supply voltage 7 fluctuates and the data table obtained by AD conversion of the current value, and to enable accurate current control. Damage to the compressor 3 due to overcurrent can be avoided.

（実施の形態３）
本実施の形態では、前記圧縮機３の始動前に、前記電圧検出手段３で電圧を検出することを特徴とした圧縮機制御装置である。 (Embodiment 3)
In the present embodiment, the compressor control device is characterized in that the voltage is detected by the voltage detection means 3 before the compressor 3 is started.

前記圧縮機３の始動前に電源電圧７が変動したときに前記電流検出手段５で検出した電流値とこの電流値をＡＤ変換したデータ表にズレを補正することで、より正確な電流制御を可能とすることができ、過電流での圧縮機３の損傷を回避することができる。   By correcting the current value detected by the current detection means 5 when the power supply voltage 7 fluctuates before starting the compressor 3 and a data table obtained by AD conversion of the current value, more accurate current control can be performed. This can be possible, and damage to the compressor 3 due to overcurrent can be avoided.

以上のように、本発明にかかる制御装置は、電源電圧が変動したときでも正確に電流値を検出することが可能となるので、圧縮機を駆動制御する制御装置に適用できる。   As described above, since the control device according to the present invention can accurately detect the current value even when the power supply voltage fluctuates, the control device can be applied to a control device that drives and controls the compressor.

本発明の実施の形態により構成された圧縮機制御装置を示す構成図The block diagram which shows the compressor control apparatus comprised by embodiment of this invention 本発明の電源電圧が変動したときの電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータとの対応を示す特性図The characteristic diagram which shows a response | compatibility with the electric current value detected by the electric current detection means when the power supply voltage of this invention fluctuates, and the data which AD converted this electric current value 従来の圧縮機制御装置を示す構成図Configuration diagram showing a conventional compressor control device 従来の電流検出手段で検出した電流値とこの電流値をＡＤ変換したデータとの対応を示す特性図Characteristic diagram showing correspondence between current value detected by conventional current detection means and data obtained by AD conversion of this current value

符号の説明Explanation of symbols

１ 圧縮機
２ インバータ駆動手段
３ 電圧検出手段
４ ダイオードブリッジ
５ 電流検出手段
６ 電流値補正手段
７ 電源 DESCRIPTION OF SYMBOLS 1 Compressor 2 Inverter drive means 3 Voltage detection means 4 Diode bridge 5 Current detection means 6 Current value correction means 7 Power supply

Claims (3)

電動機を駆動源とする圧縮機において、前記圧縮機を駆動するインバータ駆動手段と、前記インバータ駆動手段に供給される電圧を検出する電圧検出手段と、電源電圧を整流して前記インバータ駆動手段に供給される電圧を供給するダイオードブリッジと、前記ダイオードブリッジの交流入力ラインに流れる電流を検出する電流検出手段と、前記電圧検出手段によって検出した電圧を基準値と比較して基準値以上か否かで前記電流検出手段によって検出した電流値を所定値で補正する電流値補正手段とを備えたことを特徴とした圧縮機制御装置。 In a compressor using an electric motor as a drive source, inverter drive means for driving the compressor, voltage detection means for detecting a voltage supplied to the inverter drive means, and rectifying a power supply voltage to supply to the inverter drive means A diode bridge for supplying a voltage to be detected, a current detection means for detecting a current flowing in an AC input line of the diode bridge, and whether the voltage detected by the voltage detection means is equal to or higher than a reference value by comparing with a reference value A compressor control apparatus comprising: a current value correcting unit that corrects a current value detected by the current detecting unit with a predetermined value. 前記電流値補正手段において所定値で補正を行った前記電流検出手段によって検出した電流値を用いて圧縮機を動作させることを特徴とした請求項１記載の圧縮機制御装置。 2. The compressor control apparatus according to claim 1, wherein the compressor is operated using the current value detected by the current detection means corrected by a predetermined value in the current value correction means. 前記圧縮機始動前に、前記電圧検出手段で電圧を検出することを特徴とした請求項１記載の圧縮機制御装置。 2. The compressor control device according to claim 1, wherein the voltage is detected by the voltage detecting means before the compressor is started.
JP2006246509A 2006-09-12 2006-09-12 Compressor controller Pending JP2008072781A (en)

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