JPH031695U - - Google Patents
Info
- Publication number
- JPH031695U JPH031695U JP1989058216U JP5821689U JPH031695U JP H031695 U JPH031695 U JP H031695U JP 1989058216 U JP1989058216 U JP 1989058216U JP 5821689 U JP5821689 U JP 5821689U JP H031695 U JPH031695 U JP H031695U
- Authority
- JP
- Japan
- Prior art keywords
- induction motor
- primary current
- frequency
- circuit
- reference signal
- 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
- 230000006698 induction Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図はこの考案の一実施例を示す回路構成図
、第２図は従来の誘導動機の制御装置のブロツク
図、第３図は第２図に示す装置のベクトル図であ
る。
１は比較器、２，３，４−１，４−２，４−３
演算回路、５は駆動回路、６は誘導電動機、７は
検出器、８は正弦波余弦波発生回路、９はベクト
ル回転器、１０は演算器、１１は２相３相変換演
算器、１２は駆動回路、１３は検出回路、１４は
３相−２相変換回路、１５はベクトル回転器、１
６はローパスフイルター、１７は演算回路である
。なお、図中、同一符号は同一、または相当部分
を示す。
FIG. 1 is a circuit diagram showing an embodiment of this invention, FIG. 2 is a block diagram of a conventional induction motor control device, and FIG. 3 is a vector diagram of the device shown in FIG. 1 is a comparator, 2, 3, 4-1, 4-2, 4-3
Arithmetic circuit, 5 is a drive circuit, 6 is an induction motor, 7 is a detector, 8 is a sine wave/cosine wave generation circuit, 9 is a vector rotator, 10 is an arithmetic unit, 11 is a two-phase three-phase conversion arithmetic unit, 12 is a A drive circuit, 13 a detection circuit, 14 a 3-phase to 2-phase conversion circuit, 15 a vector rotator, 1
6 is a low-pass filter, and 17 is an arithmetic circuit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
指令値に速応するための一次電流の最適瞬時値基
準信号を演算する演算回路と前記演算回路の出力
信号を制御信号として周波数変換装置を制御し前
記誘導電動機の一次電流を制御するようにした誘
導電動機の制御装置において、周波数が設定可能
な一次電流基準信号演算回路と、前記一次電流の
最適瞬時値基準信号に前記設定された周波数の一
次電流基準信号を加算する加算回路と、前記誘導
電動機一次電圧のうち前記の設定された周波数の
電圧を検出する検出回路と、前記設定された周波
数の一次電流基準信号及び設定周波数及び前記設
定周波数の電圧検出信号及び前記誘導電動機回転
角周波数から誘導電動機二次抵抗を演算する演算
回路と、 前記誘導電動機の二次抵抗の値を記憶、更新す
る回路を備えることにより、 前記誘導電動機の一次電流最適瞬時値基準信号
の演算が常に誘導電動機の実際の二次抵抗値を使
つておこなわれることを可能とすることを特徴と
する誘導電動機の制御装置。[Claims for Utility Model Registration] An arithmetic circuit that calculates an optimum instantaneous value reference signal of a primary current for quickly responding to torque and magnetic flux command values based on constants of an induction motor, and an output signal of the arithmetic circuit that is used as a control signal. A control device for an induction motor, which controls a frequency conversion device to control a primary current of the induction motor, includes a primary current reference signal calculation circuit whose frequency can be set; an addition circuit that adds a primary current reference signal of a set frequency; a detection circuit that detects a voltage of the set frequency among the induction motor primary voltage; and a primary current reference signal of the set frequency and settings. A calculation circuit that calculates the secondary resistance of the induction motor from the frequency, the voltage detection signal of the set frequency, and the rotational angular frequency of the induction motor; and a circuit that stores and updates the value of the secondary resistance of the induction motor. A control device for an induction motor, characterized in that calculation of a primary current optimum instantaneous value reference signal of the induction motor is always performed using an actual secondary resistance value of the induction motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989058216U JPH031695U (en) | 1989-05-18 | 1989-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989058216U JPH031695U (en) | 1989-05-18 | 1989-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031695U true JPH031695U (en) | 1991-01-09 |
Family
ID=31583622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989058216U Pending JPH031695U (en) | 1989-05-18 | 1989-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031695U (en) |
-
1989
- 1989-05-18 JP JP1989058216U patent/JPH031695U/ja active Pending
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