JPH046913B2 - - Google Patents
Info
- Publication number
- JPH046913B2 JPH046913B2 JP58052374A JP5237483A JPH046913B2 JP H046913 B2 JPH046913 B2 JP H046913B2 JP 58052374 A JP58052374 A JP 58052374A JP 5237483 A JP5237483 A JP 5237483A JP H046913 B2 JPH046913 B2 JP H046913B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- circuit
- relay
- photocoupler
- light emitting
- 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.)
- Expired - Lifetime
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は三相交流の相回転検出に係り、特にマ
イクロコンピユータなどのエレクトロニクス制御
回路に信号として取り込む場合に好適な相回転検
出回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to phase rotation detection of three-phase alternating current, and particularly to a phase rotation detection circuit suitable for inputting the signal into an electronics control circuit such as a microcomputer as a signal.
従来のこの種の相回転検出回路は第１図に示す
ようにＲ相にコンデンサＣ１、Ｓ相に交流継電器
X1のコイル、Ｔ相に抵抗器Ｒ１で構成される。
今相順がＲ→Ｓ→Ｔの場合には、交流継電器X1
のコイルには線間電圧Ｖより大きな電圧がかか
り、交流継電器X1は動作する。次に相順がＲ→
Ｔ→Ｓの場合には、交流継電器X1のコイルには
線間電圧Ｖより小さな電圧がかかり、交流継電器
X1は動作しないようになつていた。このため
(1) 交流継電器X1のコイルをVLでは動作、Vsで
は不動作となるように設計しなければならず、
特殊なものが必要であつた。また、Vsで交流
継電器X1のコイルに電圧がかかつているため、
動作が不安定状態におかれており、
(2) 振動、衝撃などで誤動作しやすい。
A conventional phase rotation detection circuit of this type has a capacitor C1 on the R phase and an AC relay on the S phase, as shown in Figure 1.
It consists of a coil of X 1 and a resistor R1 on the T phase.
If the current phase order is R→S→T, AC relay X 1
A voltage greater than the line voltage V is applied to the coil, and AC relay X1 operates. Next, phase order is R→
In the case of T → S, a voltage smaller than the line voltage V is applied to the coil of AC relay X 1 , and the AC relay
X 1 was starting to stop working. For this reason, (1) the coil of AC relay X 1 must be designed so that it operates at VL and does not operate at Vs,
Something special was needed. Also, since voltage is applied to the coil of AC relay X 1 at Vs,
The operation is unstable and (2) it is prone to malfunction due to vibrations, shocks, etc.
(3) ノイズ、サージ電圧などでも誤動作を起しや
すい。(3) Malfunctions are likely to occur due to noise, surge voltage, etc.
(4) 交流継電器は商用電源の為、絶縁距離などの
面から小形化に限界がある。(4) Since AC relays use commercial power, there are limits to miniaturization due to insulation distance and other considerations.
(5) 制御回路に電子回路を使用した場合には、直
接交流継電器の接点を取込むことができない。(5) If an electronic circuit is used for the control circuit, it is not possible to directly connect the contacts of an AC relay.
などの欠点があつた。There were drawbacks such as:
本発明の目的は、上記の問題点を解決した三相
の相回転検出回路を提供することにある。
An object of the present invention is to provide a three-phase phase rotation detection circuit that solves the above problems.
本発明の相回転検出回路は、機械的な接点を介
さずに電子回路に信号をとり込むことができ、か
つ三相中二相のみの検出で相回転方向が判断でき
るようにしたものである。
The phase rotation detection circuit of the present invention is capable of receiving signals into an electronic circuit without using mechanical contacts, and is capable of determining the direction of phase rotation by detecting only two of the three phases. .
以下、本発明の一実施例を第２図により説明す
る。三相の各相にＺなるインピーダンスを接続
し、（スター、以下とする）に構成する。こ
の回路の中性点をΔ回路に開き、うち２辺に
D1，D2なるダイオードとPC１及びPC２なるフオ
トカプラの１次側の発光ダイオードとを逆並列に
接続した回路を挿入する。ＺはフオトカプラPC
１及びPC２の発光ダイオードの許容電流以内に
選択しなければならない。回路動作を第３図によ
り説明すると、フオトカプラPC１の発光ダイオ
ードには、Ｒ相がＳ相より電圧が大きいときのみ
電流が流れる。また、フオトカプラPC２の発光
ダイオードにはＲ相がＴ相より電圧が大きいとき
のみ電流が流れる。このＲ相がＳ相及びＴ相より
大きい場合には、各フオトカプラの２次側、つま
り受光側のトランジスタはON状態となる。例え
ば図中に示すように、Ｒ−Ｓ相のフオトカプラの
受光側のトランジスタがONしてからＲ−Ｔ相の
フオトカプラの受光側トランジスタがONするま
での時間がt1の時を正方向とするならＳとＴが入
れ替つた場合はその時間はt2となり、容易に相方
向が判別できる。一般にt2＝5t1の関係がある。
このように本実施例によれば、三相の相回転の方
向を２個のフオトカプラで検出でき、かつ、フオ
トカプラの２次側のトランジスタを制御するた
め、直流低圧の電子制御回路側に直接とり込むこ
とができるなどの効果がある。
An embodiment of the present invention will be described below with reference to FIG. Connect an impedance Z to each of the three phases and configure it as a star. Open the neutral point of this circuit into a Δ circuit, and connect two sides of it to
Insert a circuit in which diodes D 1 and D 2 and light emitting diodes on the primary side of photocouplers PC1 and PC2 are connected in antiparallel. Z is photocoupler PC
The selection must be within the allowable current of the light emitting diodes of PC1 and PC2. To explain the circuit operation with reference to FIG. 3, a current flows through the light emitting diode of the photocoupler PC1 only when the voltage of the R phase is higher than that of the S phase. Furthermore, current flows through the light emitting diode of the photocoupler PC2 only when the voltage of the R phase is higher than that of the T phase. When this R phase is larger than the S phase and the T phase, the transistor on the secondary side of each photocoupler, that is, on the light receiving side is turned on. For example, as shown in the figure, if the time from when the light-receiving side transistor of the R-S phase photocoupler turns on to when the light-receiving side transistor of the RT-phase photocoupler turns on is t1, the positive direction. When S and T are exchanged, the time is t2, and the mutual direction can be easily determined. Generally, there is a relationship of t2=5t1.
In this way, according to this embodiment, the direction of phase rotation of the three phases can be detected by two photocouplers, and in order to control the transistor on the secondary side of the photocoupler, a direct connection is made to the DC low voltage electronic control circuit side. It has the effect of being able to absorb
なお、第２図にはＲ相からＴ相とＲ相からＳ相
の間にフオトカプラの１次側発光ダイオードとダ
イオードの逆並列回路を挿入したが、これに固定
されるものではない。また、フオトカプラの１次
側の発光ダイオードの向きもこれに固定されるも
のではない。さらにフオトカプラの２次側はトラ
ンジスタで説明したが、やはりこれに限るもので
はなく、同等の機能を有するものなら良い。 In addition, in FIG. 2, an anti-parallel circuit of the primary side light emitting diode of the photocoupler and the diode is inserted between the R phase and the T phase and from the R phase to the S phase, but the invention is not limited to this. Furthermore, the orientation of the light emitting diode on the primary side of the photocoupler is not fixed to this. Furthermore, although the secondary side of the photocoupler has been described as a transistor, it is not limited to this, and any transistor having the same function may be used.
本発明によれば、交流継電器を使用しなくとも
良いため
(1) 交流継電器のコイルを特注設計する必要がな
い。
According to the present invention, since there is no need to use an AC relay, (1) there is no need to custom design the coil of the AC relay.
(2) 回路の不安定状態がなく、振動、衝撃やノイ
ズ、サージ電圧などの外乱にも強い。(2) There is no circuit instability, and it is resistant to disturbances such as vibration, shock, noise, and surge voltage.
(3) 小形化が可能 などの効果がある。(3) Can be made smaller There are effects such as
第１図は従来例、第２図は本発明の詳細例、第
３図は本発明のタイミング説明図である。
Ｃ１……コンデンサ、Ｒ１……抵抗、X1……
交流継電器のコイル、Ｚ……インピーダンス、
PC１〜PC２……フオトカプラ。
FIG. 1 is a conventional example, FIG. 2 is a detailed example of the present invention, and FIG. 3 is a timing explanatory diagram of the present invention. C1... Capacitor, R1... Resistor, X 1 ...
AC relay coil, Z...impedance,
PC1~PC2...Photocoupler.
Claims (1)
んでなるΔ回路の２辺に、各々ダイオードと発光
ダイオードを逆並列接続してなる回路を挿入し、
前記それぞれの発光素子に光結合させて受光トラ
ンジスタを設け、該２個の受光トランジスタの通
電開始時刻の間隔の差違により相回転方向を判別
する構成とした三相の相回転検出回路。1 Insert a circuit formed by connecting a diode and a light emitting diode in anti-parallel on each side of the Δ circuit formed by connecting the connection ends connected to the three-phase circuit to be detected,
A three-phase phase rotation detection circuit having a configuration in which a light receiving transistor is optically coupled to each of the light emitting elements, and a phase rotation direction is determined based on a difference in the interval between energization start times of the two light receiving transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5237483A JPS59178370A (en) | 1983-03-30 | 1983-03-30 | Three-phase phase rotation detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5237483A JPS59178370A (en) | 1983-03-30 | 1983-03-30 | Three-phase phase rotation detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59178370A JPS59178370A (en) | 1984-10-09 |
| JPH046913B2 true JPH046913B2 (en) | 1992-02-07 |
Family
ID=12913028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5237483A Granted JPS59178370A (en) | 1983-03-30 | 1983-03-30 | Three-phase phase rotation detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59178370A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009064440A2 (en) | 2007-11-13 | 2009-05-22 | Emerson Climate Technologies, Inc. | Three-phase detection module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5597576U (en) * | 1978-12-27 | 1980-07-07 |
-
1983
- 1983-03-30 JP JP5237483A patent/JPS59178370A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59178370A (en) | 1984-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |