JPS6141398U - Instantaneous slip angle frequency calculation detection circuit - Google Patents
Instantaneous slip angle frequency calculation detection circuitInfo
- Publication number
- JPS6141398U JPS6141398U JP11718885U JP11718885U JPS6141398U JP S6141398 U JPS6141398 U JP S6141398U JP 11718885 U JP11718885 U JP 11718885U JP 11718885 U JP11718885 U JP 11718885U JP S6141398 U JPS6141398 U JP S6141398U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- magnetic flux
- detection circuit
- calculating
- multipliers
- 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
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、本考案のすべり角周波数演算検出回路を用い
■ＶＶＦインバータで運転される誘導機の入力電圧、電
流よりすべり角周波数を演算検出するための構成図、第
２図は本考案のすべり角周波数演算検出回路の具体的な
演算構成を示す実施例である。
１ｕ，１ｖ，１ｗ・・・誘導機のｕ，ｖおよびＷ相の一
次巻線、Ｌ，１，・・・その直交二成分巻線、２８，２
ｙ・・・二次巻線の直交二成分巻線、１・・・誘導電動
機、２・・・ＶＶＶＦイバータ、３・・・設定器、４・
・・電圧検出器、５・・・電流検出器、６・・・すべり
角周波数演算検出回路、４１．４２・・・電流検出用変
流器、４３・・・電流３相／２−相変換器、５１・・・
電圧検出用変成器、５２・・・電圧３相／２相変換器、
４４，５３，８２・・・加算器、４５，５４．５７，６
４．６，７４，７７，８０・・・演算器、４６，４７．
５５，５６，６３，６５，７３，７５，８１・・・係数
器、６６．６７・・・積分器、６８，−６９．７８．７
９・・・乗算器、６１．６２・・・検出器出力端子、６
０，７０・・・二次鎖交磁束演算回路、８３・・・除算
器、８４・・・平方根演算器。Figure 1 is a block diagram for calculating and detecting the slip angular frequency from the input voltage and current of an induction machine operated by a VVF inverter using the slip angular frequency calculation and detection circuit of the present invention. This is an embodiment showing a specific calculation configuration of a slip angular frequency calculation detection circuit. 1u, 1v, 1w... Primary windings of the u, v and W phases of the induction machine, L, 1,... Its orthogonal two-component windings, 28, 2
y... Orthogonal two-component winding of secondary winding, 1... Induction motor, 2... VVVF inverter, 3... Setting device, 4...
... Voltage detector, 5... Current detector, 6... Slip angle frequency calculation detection circuit, 41.42... Current transformer for current detection, 43... Current 3-phase/2-phase conversion Vessel, 51...
Voltage detection transformer, 52...voltage 3-phase/2-phase converter,
44,53,82...Adder, 45,54.57,6
4.6, 74, 77, 80... Arithmetic unit, 46, 47.
55, 56, 63, 65, 73, 75, 81... Coefficient unit, 66.67... Integrator, 68, -69.78.7
9... Multiplier, 61.62... Detector output terminal, 6
0, 70...Secondary flux linkage calculation circuit, 83...Divider, 84...Square root calculation unit.
Claims (1)
導電動機の各相の電圧瞬時値および電流瞬時値を検出す
る検出器の出力信号をそれぞれ２相量に変換する２相の
３相／２相変換器の出力信号の供給を受け、誘導電動機
の２相の各相の鎖交磁束を演算する磁束演算器を具え、
かつ前記２相の各巻線間の磁束と電流の積を得る２組の
掛算器、および該２組の掛算器の出力信号の差を演算す
る減算器を有し、さらに前記出力信号の差に苅応ずる値
と、前記磁束演算器の出力信号の自乗和の飴との比を演
算する割算器を具えて構成されることを特徴とする瞬時
すべり角周波数演算検出回路。A two-phase three-phase/two-phase motor that converts the output signals of a detector that detects the instantaneous voltage and current values of each phase of a three-phase induction motor driven by a variable frequency and variable voltage inverter into two-phase quantities. comprising a magnetic flux calculator that receives the output signal of the converter and calculates the interlinkage magnetic flux of each of the two phases of the induction motor,
and two sets of multipliers for obtaining the product of the magnetic flux and current between the windings of the two phases, and a subtracter for calculating the difference between the output signals of the two sets of multipliers, further comprising: a subtracter for calculating the difference between the output signals of the two sets of multipliers; 1. An instantaneous slip angular frequency calculation and detection circuit comprising a divider for calculating a ratio between a value corresponding to the magnetic flux and a sum of squares of the output signal of the magnetic flux calculation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11718885U JPS6141398U (en) | 1985-08-01 | 1985-08-01 | Instantaneous slip angle frequency calculation detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11718885U JPS6141398U (en) | 1985-08-01 | 1985-08-01 | Instantaneous slip angle frequency calculation detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6141398U true JPS6141398U (en) | 1986-03-15 |
Family
ID=30676097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11718885U Pending JPS6141398U (en) | 1985-08-01 | 1985-08-01 | Instantaneous slip angle frequency calculation detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141398U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5162313A (en) * | 1974-10-03 | 1976-05-29 | Westinghouse Electric Corp | |
| JPS5411413A (en) * | 1977-06-28 | 1979-01-27 | Toshiba Corp | Slip angle frequency arithmetic unit for induction motor |
-
1985
- 1985-08-01 JP JP11718885U patent/JPS6141398U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5162313A (en) * | 1974-10-03 | 1976-05-29 | Westinghouse Electric Corp | |
| JPS5411413A (en) * | 1977-06-28 | 1979-01-27 | Toshiba Corp | Slip angle frequency arithmetic unit for induction motor |
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