CN103532472A - Power frequency and frequency conversion mixed control method - Google Patents
Power frequency and frequency conversion mixed control method Download PDFInfo
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- CN103532472A CN103532472A CN201310212056.9A CN201310212056A CN103532472A CN 103532472 A CN103532472 A CN 103532472A CN 201310212056 A CN201310212056 A CN 201310212056A CN 103532472 A CN103532472 A CN 103532472A
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- frequency
- frequency conversion
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- power frequency
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Abstract
The invention provides a power frequency and frequency conversion mixed control method comprising the following three steps: 1) power frequency startup, 2) motor star-delta connection conversion, 3) and frequency conversion operation. The control method always maintains that the power frequency and the frequency conversion are interlocked so that only one is in operation. Common dragging of a star-delta control cabinet and a frequency conversion device is realized so that reduction voltage startup is realized and reducing consumption of frequency conversion control in the operation process is also realized.
Description
Technical field
The present invention relates to a kind of power control method, be specifically related to a kind of power frequency and frequency conversion mixing control method.
Background technology
Generally, it is that frequency conversion tank motor outlet wire is in parallel with industrial frequency cabinet motor outlet wire that power frequency and frequency conversion mix control, and control loop is realized frequency conversion and power frequency interlocking.In the middle of this class circuit, the connection of motor is (star connects or corner connection) of fixing, and power frequency is combined with frequency conversion and is controlled fairly simplely like this, and technology is also very ripe.
Star angle control cubicle be the mode of connection that changes motor to realize reduced-voltage starting be object, its starting current be directly start 1/3, and had a set of very ripe electric motor protecting allocation plan.But power frequency also has problem with coordinating of frequency-conversion control cabinet, if change star delta start cabinet into direct startup, when needs power frequency startup, the large and original electric motor protecting of starting current needs to adjust.
Summary of the invention
For solving power frequency and frequency conversion, mix control problem, the present invention proposes a kind of power frequency and frequency conversion mixing control method, comprise following three steps: 1) power frequency startup, 2) conversion of motor star corner connection line, 3) variable frequency work.
Described control method remains power frequency and frequency conversion interlocking, can only have one in work.
The invention has the beneficial effects as follows: realized star angle control cubicle and added converter plant and jointly drag, realized electric machine step-down starting, realized again in running variable frequency control and reduced and consume.
Accompanying drawing explanation
Fig. 1 a kind of embodiment structural representation of the present invention,
Reference numeral: 1-industrial frequency cabinet power supply, 2-frequency conversion tank power supply, 3-control cubicle, 4-motor, 5-star angle control cubicle.
Embodiment
The present invention proposes a kind of power frequency and frequency conversion mixing control method, comprise following three steps: 1) power frequency startup, 2) conversion of motor star corner connection line, 3) variable frequency work.
Described control method remains power frequency and frequency conversion interlocking, can only have one in work.
Example explanation: a kind of power frequency and frequency conversion mixings control appliance as shown in Figure 1, comprising: industrial frequency cabinet power supply 1 and 2, two power supplys of frequency conversion tank power supply as input connect control cubicles 3, then control cubicle connection motor 4 and star angle control cubicles 5.Wherein industrial frequency cabinet power supply 1 is for providing power current; Wherein frequency conversion tank power supply 2 is for providing frequency conversion electric current; Control cubicle 3 is for frequency conversion and power frequency interlocking; Star angle control cubicle 5 is realized motor 4 stars and is connect with corner connection and change for controlling motor 4.
Operation program of the present invention:
One, power frequency operation:
1) QF that determines motor is in co-bit, and power frequency supply indicator light is bright;
2) operation frequency conversion tank change over switch is to power frequency position;
3) operating operation case change over switch is to power frequency, determine control box corresponding/power frequency allows indicator light bright, action button, at this moment power frequency operation indicator light is bright;
4) at star angle, start cabinet and press start button, starter motor;
Two, motor star corner connection line conversion:
1) determine frequency conversion tank power supply co-bit, control power supply co-bit, variable frequency power supply indicator light is bright;
2) operation frequency conversion tank change over switch is to frequency conversion;
3) operating operation case change over switch, to frequency conversion, determines that variable frequency power supply indicator light is bright;
4) start star angle and start cabinet button, treat that star-angle converts, it is bright that frequency conversion allows to start indicator light;
Three, variable frequency work:
Start variable frequency starting button, motor frequency conversion operation, converting operation indicator light is bright.
Claims (2)
1. power frequency and a frequency conversion mixing control method, is characterized in that comprising following three steps: 1) power frequency startup, 2) conversion of motor star corner connection line, 3) variable frequency work.
2. a kind of power frequency and frequency conversion mixing control method described in claim one, is characterized in that described control method remains power frequency and frequency conversion interlocking, can only have one in work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212056.9A CN103532472A (en) | 2013-05-31 | 2013-05-31 | Power frequency and frequency conversion mixed control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310212056.9A CN103532472A (en) | 2013-05-31 | 2013-05-31 | Power frequency and frequency conversion mixed control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103532472A true CN103532472A (en) | 2014-01-22 |
Family
ID=49934224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310212056.9A Withdrawn CN103532472A (en) | 2013-05-31 | 2013-05-31 | Power frequency and frequency conversion mixed control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103532472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214126A (en) * | 2014-06-24 | 2014-12-17 | 四川川鸿电气设备有限责任公司 | Intelligent fluid control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270497Y (en) * | 2008-09-25 | 2009-07-08 | 安徽怡能电子科技有限公司 | Variable frequency and power frequency operation main circuit structure for three phase AC electric motor |
| WO2011100819A1 (en) * | 2010-02-16 | 2011-08-25 | Cavet Technologies Inc. | Dynamic application of cut-out pulses in alternating current power |
-
2013
- 2013-05-31 CN CN201310212056.9A patent/CN103532472A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201270497Y (en) * | 2008-09-25 | 2009-07-08 | 安徽怡能电子科技有限公司 | Variable frequency and power frequency operation main circuit structure for three phase AC electric motor |
| WO2011100819A1 (en) * | 2010-02-16 | 2011-08-25 | Cavet Technologies Inc. | Dynamic application of cut-out pulses in alternating current power |
Non-Patent Citations (1)
| Title |
|---|
| 崔双民等: "高压注水泵星角启动柜和变频控制接口问题解决方法", 《油气田地面工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214126A (en) * | 2014-06-24 | 2014-12-17 | 四川川鸿电气设备有限责任公司 | Intelligent fluid control system |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140122 |