JPS6333400U - - Google Patents
Info
- Publication number
- JPS6333400U JPS6333400U JP12330086U JP12330086U JPS6333400U JP S6333400 U JPS6333400 U JP S6333400U JP 12330086 U JP12330086 U JP 12330086U JP 12330086 U JP12330086 U JP 12330086U JP S6333400 U JPS6333400 U JP S6333400U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- power source
- induction motor
- pwm inverter
- variable speed
- 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 4
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来のＰＷＭインバータの回路図、第３図お
よび第４図は本考案の動作を説明するためのＰＷ
Ｍ出力波形図である。
１……３相４線式トランス、２，５……電磁接
触器、３……タイムリレー、４……コンバータ、
６……平滑コンデンサ、７……ＰＷＭインバータ
、８……誘導電動機、９……限流抵抗器、１０…
…電圧フイードバツク用トランス、１１……ドラ
イブ回路、１２……リレードライバ、１３……速
度設定器、１４……加減速回路、１５……ゲイン
切換回路、１６……周波数指令回路、１７……電
圧指令回路、１８……ＣＰＵ。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram of a conventional PWM inverter, and Figures 3 and 4 are PWM inverters for explaining the operation of the present invention.
It is an M output waveform diagram. 1... 3-phase 4-wire transformer, 2, 5... Magnetic contactor, 3... Time relay, 4... Converter,
6... Smoothing capacitor, 7... PWM inverter, 8... Induction motor, 9... Current limiting resistor, 10...
... Voltage feedback transformer, 11 ... Drive circuit, 12 ... Relay driver, 13 ... Speed setter, 14 ... Acceleration/deceleration circuit, 15 ... Gain switching circuit, 16 ... Frequency command circuit, 17 ... Voltage Command circuit, 18...CPU.
Claims (1)
するコンバータと、誘導電動機を可変速駆動する
ＰＷＭインバータと、上記ＰＷＭインバータの直
流電源として常時は上記コンバータの端子電圧を
入力すると共に誘導電動機を低速運転するときは
上記コンバータの正側端子と上記交流電源の中性
点との間の電圧を入力する切換回路を備えたこと
を特徴とする誘導電動機の可変速制御装置。 A three-phase four-wire AC power source, a converter that rectifies the three-phase output, a PWM inverter that drives the induction motor at variable speed, and a DC power source for the PWM inverter that always inputs the terminal voltage of the converter and converts the induction motor. A variable speed control device for an induction motor, comprising a switching circuit that inputs a voltage between the positive terminal of the converter and the neutral point of the AC power source when the motor is operated at low speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12330086U JPS6333400U (en) | 1986-08-13 | 1986-08-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12330086U JPS6333400U (en) | 1986-08-13 | 1986-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333400U true JPS6333400U (en) | 1988-03-03 |
Family
ID=31014274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12330086U Pending JPS6333400U (en) | 1986-08-13 | 1986-08-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333400U (en) |
-
1986
- 1986-08-13 JP JP12330086U patent/JPS6333400U/ja active Pending
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