JPH0193999U - - Google Patents
Info
- Publication number
- JPH0193999U JPH0193999U JP19001587U JP19001587U JPH0193999U JP H0193999 U JPH0193999 U JP H0193999U JP 19001587 U JP19001587 U JP 19001587U JP 19001587 U JP19001587 U JP 19001587U JP H0193999 U JPH0193999 U JP H0193999U
- Authority
- JP
- Japan
- Prior art keywords
- current
- converter
- inverter
- value
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 8
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案の一実施例としてのコンバータ
入口電流Ａを利用した制御フローチヤート図、第
２図は本考案の他の実施例としてのコンバータ出
口電流Ｂを利用した制御フローチヤート図、第３
図（右上）は本考案のインバータ出力周波数Ｆを
パラメータとしてコンバータ入口電流Ａとコンバ
ータ出口電流Ｂの関係を示す特性図、第３図（右
下）は本考案のインバータ出力周波数Ｆに対する
コンバータ入口電流制限値ＡｆＭ及びコンバータ
入口電流解除値ＡｆＮの関係を示す特性図、第３
図（左上）は本考案のインバータ出力周波数Ｆに
対するコンバータ出口電流制限値ＢｆＭ及びコン
バータ出口電流解除値ＢｆＮの関係を示す特性図
、第４図は本考案の一実施例としてのコンバータ
入口電流を利用した機能ブロツク図、第５図は本
考案の他の一実施例としてのコンバータ出口電流
を利用した機能ブロツク図、第６図は従来のイン
バータエアコンの室外機の制御機能ブロツク図、
第７図は従来の制御フローチヤート図、第８図は
従来のインバータ出力周波数Ｆとコンバータ入口
電流制限値ＡＭ及びコンバータ入口電流解除値Ａ
Ｎの関係図である。
Ａ……コンバータ入口電流、Ｂ……コンバータ
出口電流、Ｆ……インバータ出力周波数、ＡｆＭ
……コンバータ入口電流制限値、ＡｆＮ……コン
バータ入口電流解除値、ＢｆＭ……コンバータ出
口電流制限値、ＢｆＮ……コンバータ出口電流解
除値、ΔＦ……設定周波数。
FIG. 1 is a control flowchart using converter inlet current A as an embodiment of the present invention, and FIG. 2 is a control flowchart using converter outlet current B as another embodiment of the present invention. 3
The figure (upper right) is a characteristic diagram showing the relationship between converter inlet current A and converter outlet current B using the inverter output frequency F of the present invention as a parameter, and Figure 3 (lower right) is the converter inlet current versus inverter output frequency F of the present invention. Characteristic diagram showing the relationship between limit value A f M and converter inlet current release value A f N, 3rd
The figure (upper left) is a characteristic diagram showing the relationship between the converter outlet current limit value B f M and the converter outlet current release value B f N with respect to the inverter output frequency F of the present invention, and Fig. 4 is a characteristic diagram of the converter as an embodiment of the present invention. FIG. 5 is a functional block diagram using the inlet current; FIG. 5 is a functional block diagram using the converter outlet current as another embodiment of the present invention; FIG. 6 is a functional block diagram for controlling the outdoor unit of a conventional inverter air conditioner;
Fig. 7 is a conventional control flowchart, and Fig. 8 is a conventional control flowchart showing the inverter output frequency F, converter inlet current limit value AM, and converter inlet current release value A.
It is a relationship diagram of N. A...Converter inlet current, B...Converter outlet current, F...Inverter output frequency, A f M
...Converter inlet current limit value, A f N...Converter inlet current release value, B f M...Converter outlet current limit value, B f N...Converter outlet current release value, ΔF... Set frequency.
Claims (1)
おいて、コンバータの入口又は出口電流を検出す
る手段と、最小から最大までのインバータ周波数
に対するコンバータ入口又は出口電流制限値およ
びコンバータ入口又は出口電流解除値を算出する
手段と、前記検出手段により検出した電流値が前
記算出手段により算出した電流制限値を越えたと
き、インバータ周波数を設定周波数下げ、電流解
除値以下になつたとき、通常運転に復帰させるイ
ンバータ周波数決定手段とを備えたことを特徴と
するインバータユニツト。 In an inverter unit for variable speed control of a motor, means for detecting the inlet or outlet current of the converter, and means for calculating a converter inlet or outlet current limit value and a converter inlet or outlet current release value for inverter frequencies from a minimum to a maximum. , an inverter frequency determining means for lowering the inverter frequency to a set frequency when the current value detected by the detecting means exceeds the current limit value calculated by the calculating means, and returning to normal operation when the current value falls below the current release value; An inverter unit characterized by being equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19001587U JPH0193999U (en) | 1987-12-16 | 1987-12-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19001587U JPH0193999U (en) | 1987-12-16 | 1987-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0193999U true JPH0193999U (en) | 1989-06-21 |
Family
ID=31481018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19001587U Pending JPH0193999U (en) | 1987-12-16 | 1987-12-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09310903A (en) * | 1996-05-23 | 1997-12-02 | Fujitsu General Ltd | Control method of air conditioner |
-
1987
- 1987-12-16 JP JP19001587U patent/JPH0193999U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09310903A (en) * | 1996-05-23 | 1997-12-02 | Fujitsu General Ltd | Control method of air conditioner |