CN104967364A - Motor control device and method - Google Patents
Motor control device and method Download PDFInfo
- Publication number
- CN104967364A CN104967364A CN201510409096.1A CN201510409096A CN104967364A CN 104967364 A CN104967364 A CN 104967364A CN 201510409096 A CN201510409096 A CN 201510409096A CN 104967364 A CN104967364 A CN 104967364A
- Authority
- CN
- China
- Prior art keywords
- motor
- control circuit
- control
- variable
- circuit
- 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
The invention discloses a motor control device and method. According to the motor control device, a variable-frequency speed regulator is arranged so as to control two water supply motors. When the variable-frequency speed regulator fails to work, the variable-frequency speed regulator is controlled to be disconnected from a first control circuit via a controller so that the variable-frequency speed regulation state of the first motor is enabled to be switched to a full-speed operation state; or when the variable-frequency speed regulator fails to work, the variable-frequency speed regulator is controlled to be disconnected from a second control circuit so that the variable-frequency speed regulation state of the second motor is enabled to be switched to the full-speed operation state. A problem in the prior art that the water supply motors cannot continue working when the variable-frequency speed regulator fails to work can be solved by the motor control device and method.
Description
Technical field
The present invention relates to supply equipment control field, in particular to a kind of motor control assembly and method.
Background technology
Large-scale water supply electric system is related to the production safety of whole factory, for being generally be configured according to the principle of the using and the reserved during hydroelectric machine actual disposition, thus breaking down can switch to rapidly motor for subsequent use at the motor worked.General water supply power of motor is all comparatively large, according to the real-time change of water demand, in order to reach energy-saving effect, all needing to configure a set of variable-frequency governor, make water supply machine operation in frequency control state, thus reach energy-conservation effect to two for hydroelectric machine.But, in practical work process, if variable-frequency governor breaks down, then water supply motor can be made directly to quit work; Meanwhile, also cannot switch between hydroelectric machine at two in time when the confession hydroelectric machine operated breaks down, thus cause interruption of supplying water, have a strong impact on normally carrying out of production.In addition, for every platform arranges variable-frequency governor respectively for hydroelectric machine, also can cause the significant wastage of equipment, increase financial burden.Simultaneously, the existing hydroelectric machine that supplies is under the control of variable-frequency governor, under the increase of water consumption runs to full-speed state, still variable-frequency governor cannot be disconnected, thus make all to operate under the control of variable-frequency governor all the time for hydroelectric machine, variable-frequency governor is worked long hours, causes the shortening in useful life.
For the problem that cannot remain in operation when RHVC breaks down for hydroelectric machine of the prior art, at present effective solution is not yet proposed.
Summary of the invention
Main purpose of the present invention is to provide a kind of motor control assembly and method, to solve the problem that cannot remain in operation when RHVC breaks down for hydroelectric machine of the prior art.
To achieve these goals, according to an aspect of the embodiment of the present invention, provide a kind of motor control assembly, comprise: first control circuit, be connected respectively with the high voltage bus of the first external power supply and the first motor, described first control circuit controls described first motor and operates under full-speed state; Second control circuit, is connected respectively with the high voltage bus of the second external power supply and the second motor, and described second control circuit controls described second motor and operates under full-speed state; Wherein, the first external power supply and the second external power supply are different power supplys, and the first motor and the second motor are different motor, and operate when the first motor is different with the second motor; Variable-frequency governor, be connected respectively with first control circuit and second control circuit, wherein, variable-frequency governor controls the first motor by first control circuit and operates under frequency control state, controls the second motor operate under frequency control state by second control circuit; And controller, be connected respectively with first control circuit and second control circuit, wherein, when variable-frequency governor breaks down, controller controls the connection of variable-frequency governor disconnection and first control circuit or second control circuit.
Alternatively, first control circuit comprises: the first switching circuit, is connected with the high voltage bus of the first external power supply, and wherein, first control circuit disconnects from the first external power supply by the first switching circuit in the case of an overload.
Alternatively, first control circuit also comprises: the first main control circuit, is connected respectively with the first switching circuit and the first motor, and wherein, the first master control circuit controls first motor operates under full-speed operation state.
Alternatively, first control circuit also comprises: the first bypass circuit, be connected respectively with the first main control circuit and variable-frequency governor, first bypass circuit controls the first motor by variable-frequency governor and operates under frequency control state, and when variable-frequency governor breaks down, the control loop of the first motor is switched to the first main control circuit by the first bypass circuit.
Alternatively, the first main control circuit comprises: the 3rd contactor, and wherein, the first main control circuit is switched on or switched off by the 3rd contactor; First bypass circuit comprises: the second contactor, and wherein, the first bypass circuit is switched on or switched off by the second contactor; Wherein, the 3rd contactor and the second contactor interlocking.
Alternatively, second control circuit comprises: second switch circuit, is connected with the high voltage bus of the second external power supply, and wherein, second control circuit disconnects from the second external power supply by second switch circuit in the case of an overload.
Alternatively, second control circuit also comprises: the second main control circuit, is connected respectively with second switch circuit and the second motor, and wherein, the second master control circuit controls second motor operates under full-speed state.
Alternatively, second control circuit also comprises: the second bypass circuit, be connected with the second main control circuit and variable-frequency governor respectively, wherein, second bypass circuit controls the second motor by variable-frequency governor and operates under frequency control state, and when variable-frequency governor breaks down, the control loop of the second motor is switched to the second main control circuit by the second bypass circuit.
Alternatively, the second main control circuit comprises: the 6th contactor, and wherein, the second main control circuit is switched on or switched off by the 3rd contactor; Second bypass circuit comprises: the 5th contactor, and wherein, the second bypass circuit is switched on or switched off by the second bypass; Wherein, the 6th contactor and the 5th contactor interlocking.
To achieve these goals, according to an aspect of the embodiment of the present invention, additionally provide a kind of motor control method, comprising:
Described first motor is controlled or described second motor operates under frequency control state by the variable-frequency governor be connected with the first motor and the second motor respectively; Wherein, described first motor and described second motor are different motor, and operate when described first motor is different with described second motor; When described variable-frequency governor breaks down, control described variable-frequency governor and disconnect the connection with described first motor, described first motor is operated under full-speed state or controls described variable-frequency governor to disconnect the connection with described second control circuit, described second motor is operated under full-speed state.
Alternatively, also comprise: when described first motor breaks down, cut off the control loop of described first motor, and control described second motor and operate under frequency control state; And, when described second motor breaks down, cut off the control loop of described second motor, and control described first motor and operate under frequency control state.
According to the embodiment of the present invention, the operating condition of hydroelectric machine is supplied to control by arranging a variable-frequency governor to two, and when variable-frequency governor breaks down, control variable-frequency governor by controller and to break from first control circuit thus to make the first motor switch to full-speed operation state by frequency control state; Or, when variable-frequency governor breaks down, control variable-frequency governor and break from second control circuit thus make the second motor switch to full-speed operation state by frequency control state.Solve the problem that cannot remain in operation when RHVC breaks down for hydroelectric machine of the prior art, simultaneously can when normally working, when variable-frequency governor breaks from control loop and breaks down at confession hydroelectric machine by the continuous running of confession hydroelectric machine under full-speed state, motor for subsequent use can be switched in time supply water, reach and ensure that production is normally carried out, equipment investment is few, save energy and reduce the cost and extend the effect in variable-frequency governor life-span.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the optional motor control assembly of the embodiment of the present invention;
Fig. 2 is the control circuit figure according to the optional motor control assembly of the embodiment of the present invention;
Fig. 3 is the flow chart according to the optional a kind of motor control method of the embodiment of the present invention;
Fig. 4 is the flow chart according to the optional another kind of motor control method of the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Embodiments provide a kind of motor control assembly.
Fig. 1 is the structured flowchart according to the optional motor control assembly of the embodiment of the present invention.
As shown in Figure 1, the motor control assembly of the embodiment of the present invention, comprising: first control circuit 1, second control circuit 2, variable-frequency governor 3 and controller 4, and high voltage bus and first motor 6 of first control circuit 1 and the first external power supply 5 are connected respectively; High voltage bus and second motor 8 of second control circuit 2 and the second external power supply 7 are connected respectively, wherein, first external power supply 5 and the second external power supply 7 are different power supplys, first motor 6 and the second motor 8 are different motor, and running when the first motor 6 is different with the second motor 8; Variable-frequency governor 3 is connected respectively with first control circuit 1 and second control circuit 2, wherein, variable-frequency governor 3 controls the first motor 6 by first control circuit 1 and operates under frequency control state, controls the second motor 8 operate under frequency control state by second control circuit 2; Controller 4 is connected respectively with first control circuit 1 and second control circuit 2, and wherein, when variable-frequency governor 3 breaks down, controller 4 controls the connection of variable-frequency governor 3 disconnection and first control circuit 1 or second control circuit 2.
According to the embodiment of the present invention, the operating condition of hydroelectric machine is supplied to control by arranging a variable-frequency governor to two, and when variable-frequency governor breaks down, control variable-frequency governor by controller and to break from first control circuit thus to make the first motor switch to full-speed operation state by frequency control state; Or when variable-frequency governor breaks down, control variable-frequency governor and break from second control circuit thus make the second motor switch to full-speed operation state by frequency control state.Solve the problem that cannot remain in operation when RHVC breaks down for hydroelectric machine of the prior art, simultaneously can when normally working, when variable-frequency governor breaks from control loop and breaks down at confession hydroelectric machine by the continuous running of confession hydroelectric machine under full-speed state, motor for subsequent use can be switched in time supply water, reach and ensure that production is normally carried out, equipment investment is few, save energy and reduce the cost and extend the effect in variable-frequency governor life-span.
Fig. 2 is the control circuit figure according to the optional motor control assembly of the embodiment of the present invention.
As shown in Figure 2, first control circuit 1 comprises: the first switching circuit, the first main control circuit and the first bypass circuit, primary cut-out QF1 is provided with in first switching circuit, primary cut-out QF1 is connected with the high voltage bus of the first external power supply 5, wherein, first control circuit 1 disconnects from the first external power supply 5 by the first switching circuit in the case of an overload.Primary cut-out QF1 generally adopts air switch, thus forms protection when there is overvoltage or overcurrent to first control circuit 1.
First main control circuit is connected respectively with the first switching circuit and the first motor 6, is provided with contactor KM3 in the first main control circuit, and controller 4 can control the first motor 6 by the open and close of control contactor KM3 and operate under full-speed operation state.First bypass circuit is connected respectively with the first main control circuit and variable-frequency governor 3, for controlling the opening and closing of variable-frequency governor 3, first bypass circuit comprises contactor KM1 and KM2, when contactor KM1 and KM2 closes, variable-frequency governor 3 is opened, control the first motor 6 to operate under frequency control state, when variable-frequency governor 3 breaks down, controller 4 control contactor KM2 disconnects, wherein, contactor KM2 and KM3 interlocks, when KM2 disconnects, KM3 closes, thus make the first main control circuit conducting, first bypass circuit disconnects, the control loop of the first motor 6 is switched on the first main control circuit by the first bypass circuit, the first motor 6 is made to continue to operate according to full-speed state, ensure that the first motor 6 can not be shut down.The two ends of variable-frequency governor 3 are also respectively arranged with isolating switch QS1 and QS2, when needing to change for damaging at Circuit tuning or variable-frequency governor 3, variable-frequency governor 3 are disconnected from the circuit isolation.
As shown in Figure 2, second control circuit 2 comprises: second switch circuit, the second main control circuit and the second bypass circuit, primary cut-out QF2 is provided with in second switch circuit, primary cut-out QF2 is connected with the high voltage bus of the second external power supply 7, wherein, second control circuit 2 disconnects from the second external power supply 7 by second switch circuit in the case of an overload.Similarly, primary cut-out QF2 also adopts air switch, thus forms protection when there is overvoltage or overcurrent to first control circuit 2.
Second main control circuit is connected with second switch circuit and the second motor 8 respectively, is provided with contactor KM6 in the second main control circuit, and controller 4 can control the second motor 8 by the open and close of control contactor KM6 and operate under full-speed operation state.Second bypass circuit is connected respectively with the second main control circuit and variable-frequency governor 3 respectively, for controlling the opening and closing of variable-frequency governor 3, second bypass circuit comprises contactor KM4 and KM5, when contactor KM4 and KM5 closes, variable-frequency governor 3 is opened, control the second motor 8 to operate under frequency control state, when variable-frequency governor 3 breaks down, controller 4 control contactor KM5 disconnects, wherein, wherein, contactor KM5 and KM6 interlocks, when KM5 disconnects, KM6 will close, thus make the second main control circuit conducting, second bypass circuit disconnects, the control loop of the second motor 8 is switched on the second main control circuit by the second bypass circuit, the second motor 8 is made to continue to operate according to full-speed state, ensure that the first motor 8 can not be shut down.
Two are arranged according to the using and the reserved for hydroelectric machine first motor 6 and the second motor 7, in order to ensure water supply continue carry out, cause the situation stopped that supplying water after preventing one to break down for hydroelectric machine, ensure that can be switched to motor for subsequent use in time after work drive motor breaks down supplies water.Alternatively, when the first motor 6 break down in the course of the work cannot operate time, controller 4 control contactor KM2 and KM3 disconnects simultaneously, first control circuit 1 is cut off, and control contactor KM5 closes, thus worked by the second bypass circuit startup variable-frequency governor 3, the second motor 8 is operated under frequency control state, and maintenance supplies water; Similarly, when the second motor 8 breaks down in the course of the work, controller 4 control contactor KM5 and KM6 disconnects simultaneously, second control circuit 2 is cut off, and control contactor KM2 closes, thus worked by the first bypass circuit startup variable-frequency governor 3, the first motor 6 is operated under frequency control state, and maintenance supplies water.Wherein, the generic failure for hydroelectric machine comprises: impeller failure, overvoltage or overcurrent burn, and by switching two according to emergency case for hydroelectric machine, having ensured the uninterrupted operation of supplying water, thus having met production requirement.
Embodiments provide and additionally provide a kind of motor control method.
Fig. 3 is the flow chart according to the optional a kind of motor control method of the embodiment of the present invention.
As shown in Figure 3, the motor control method of the embodiment of the present invention comprises the following steps:
S102: control described first motor by the variable-frequency governor be connected with the first motor and the second motor respectively or described second motor operates under frequency control state; Wherein, described first motor and described second motor are different motor, and operate when described first motor is different with described second motor;
S104: when described variable-frequency governor breaks down, control described variable-frequency governor and disconnect the connection with described first motor, described first motor is operated under full-speed state or controls described variable-frequency governor to disconnect the connection with described second control circuit, described second motor is operated under full-speed state.
According to the motor control method of the embodiment of the present invention, the operating condition of hydroelectric machine is supplied to control by arranging a variable-frequency governor to two, and when variable-frequency governor breaks down, variable-frequency governor and the first motor are disconnected thus makes the first motor switch to full-speed operation state by frequency control state; Or when variable-frequency governor breaks down, control variable-frequency governor and the second motor disconnect thus make the second motor switch to full-speed operation state by frequency control state.Solve the problem that cannot remain in operation when RHVC breaks down for hydroelectric machine of the prior art, simultaneously can when normally working, when variable-frequency governor breaks from control loop and breaks down at confession hydroelectric machine by the continuous running of confession hydroelectric machine under full-speed state, motor for subsequent use can be switched in time supply water, reach and ensure that production is normally carried out, equipment investment is few, save energy and reduce the cost and extend the effect in variable-frequency governor life-span.
Fig. 4 is the flow chart according to the optional another kind of motor control method of the embodiment of the present invention.
As shown in Figure 4, the motor control method of the embodiment of the present invention comprises the following steps:
S202: control the first motor by the variable-frequency governor be connected with the first motor and the second motor respectively or the second motor operates under frequency control state; Wherein, the first motor and the second motor are different motor, and operate when the first motor is different with the second motor;
S204a: when variable-frequency governor breaks down, control variable-frequency governor and disconnect the connection with the first motor, first motor is operated under full-speed state or controls variable-frequency governor to disconnect the connection with second control circuit, the second motor is operated under full-speed state;
S204b: when the first motor breaks down, cut off the control loop of the first motor, and control the second motor and operate under frequency control state; And, when the second motor breaks down, cut off the control loop of the second motor, and control the first motor and operate under frequency control state.
According to the motor control method of the embodiment of the present invention, the operating condition of hydroelectric machine is supplied to control by arranging a variable-frequency governor to two, and when breaking down for hydroelectric machine for one, switch to another to operate with frequency control state for hydroelectric machine, thus make to run without interruption for hydroelectric machine, the continuing of assure feed water carries out.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a motor control assembly, is characterized in that, comprising:
First control circuit, is connected respectively with the high voltage bus of the first external power supply and the first motor, and described first control circuit controls described first motor and operates under full-speed state;
Second control circuit, be connected respectively with the high voltage bus of the second external power supply and the second motor, described second control circuit controls described second motor and operates under full-speed state, wherein, described first external power supply and described second external power supply are different power supplys, described first motor and described second motor are different motor, and operate when described first motor is different with described second motor;
Variable-frequency governor, be connected respectively with described first control circuit and described second control circuit, wherein, described variable-frequency governor controls described first motor by described first control circuit and operates under frequency control state, controls described second motor operate under frequency control state by described second control circuit; And
Controller, be connected respectively with described first control circuit and described second control circuit, wherein, when described variable-frequency governor breaks down, described controller controls the connection of the disconnection of described variable-frequency governor and described first control circuit or described second control circuit.
2. motor control assembly according to claim 1, is characterized in that, described first control circuit comprises:
First switching circuit, is connected with the high voltage bus of described first external power supply, and wherein, described first control circuit disconnects from described first external power supply by described first switching circuit in the case of an overload.
3. motor control assembly according to claim 2, is characterized in that, described first control circuit also comprises:
First main control circuit, is connected respectively with described first switching circuit and described first motor, and wherein, described in described first master control circuit controls, the first motor operates under full-speed operation state.
4. motor control assembly according to claim 3, is characterized in that, described first control circuit also comprises:
First bypass circuit, be connected respectively with described first main control circuit and variable-frequency governor, described first bypass circuit controls described first motor by described variable-frequency governor and operates under frequency control state, and when described variable-frequency governor breaks down, the control loop of described first motor is switched to described first main control circuit by described first bypass circuit.
5. motor control assembly according to claim 4, is characterized in that,
Described first main control circuit comprises: the 3rd contactor, and wherein, described first main control circuit is switched on or switched off by described 3rd contactor;
Described first bypass circuit comprises: the second contactor, and wherein, described first bypass circuit is switched on or switched off by described second contactor;
Wherein, described 3rd contactor and described second contactor interlocking.
6. motor control assembly according to claim 1, is characterized in that, described second control circuit comprises:
Second switch circuit, is connected with the high voltage bus of described second external power supply, and wherein, described second control circuit disconnects from described second external power supply by described second switch circuit in the case of an overload.
7. motor control assembly according to claim 6, is characterized in that, described second control circuit also comprises:
Second main control circuit, is connected with second switch circuit and described second motor respectively, and wherein, described in described second master control circuit controls, the second motor operates under full-speed state.
8. motor control assembly according to claim 7, is characterized in that, described second control circuit also comprises:
Second bypass circuit, be connected with described second main control circuit and described variable-frequency governor respectively, wherein, described second bypass circuit controls described second motor by described variable-frequency governor and operates under frequency control state, and when described variable-frequency governor breaks down, the control loop of described second motor is switched to described second main control circuit by described second bypass circuit.
9. motor control assembly according to claim 8, is characterized in that,
Described second main control circuit comprises: the 6th contactor, and wherein, described second main control circuit is switched on or switched off by the 3rd contactor;
Described second bypass circuit comprises: the 5th contactor, and wherein, described second bypass circuit is switched on or switched off by the second bypass;
Wherein, described 6th contactor and described 5th contactor interlocking.
10. a motor control method, is characterized in that, comprising:
Described first motor is controlled or described second motor operates under frequency control state by the variable-frequency governor be connected with the first motor and the second motor respectively;
Wherein, described first motor and described second motor are different motor, and operate when described first motor is different with described second motor;
When described variable-frequency governor breaks down, control described variable-frequency governor and disconnect the connection with described first motor, described first motor is operated under full-speed state or controls described variable-frequency governor to disconnect the connection with described second control circuit, described second motor is operated under full-speed state.
11. motor control methods according to claim 10, is characterized in that, also comprise:
When described first motor breaks down, cut off the control loop of described first motor, and control described second motor and operate under frequency control state; And,
When described second motor breaks down, cut off the control loop of described second motor, and control described first motor and operate under frequency control state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409096.1A CN104967364A (en) | 2015-07-13 | 2015-07-13 | Motor control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409096.1A CN104967364A (en) | 2015-07-13 | 2015-07-13 | Motor control device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104967364A true CN104967364A (en) | 2015-10-07 |
Family
ID=54221336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510409096.1A Pending CN104967364A (en) | 2015-07-13 | 2015-07-13 | Motor control device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104967364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169672A (en) * | 2016-12-07 | 2018-06-15 | 发那科株式会社 | fan motor controller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601193A (en) * | 2004-10-11 | 2005-03-30 | 宁波华液机器制造有限公司 | Energy saving control system of frequency conversion in use for central air condition |
| US20130028740A1 (en) * | 2011-07-27 | 2013-01-31 | Koehnke Andre | Control device for controlling the angular setting of a rotor blade of a wind power plant and wind power plant |
| CN104201765A (en) * | 2014-08-28 | 2014-12-10 | 合肥联信电源有限公司 | One-use one-spare power type emergency power source |
| CN204216802U (en) * | 2014-10-21 | 2015-03-18 | 南京奥博电气有限公司 | A kind of high voltage converter synchronous switching device |
| CN204794770U (en) * | 2015-07-13 | 2015-11-18 | 中国恩菲工程技术有限公司 | Motor control means and system |
-
2015
- 2015-07-13 CN CN201510409096.1A patent/CN104967364A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601193A (en) * | 2004-10-11 | 2005-03-30 | 宁波华液机器制造有限公司 | Energy saving control system of frequency conversion in use for central air condition |
| US20130028740A1 (en) * | 2011-07-27 | 2013-01-31 | Koehnke Andre | Control device for controlling the angular setting of a rotor blade of a wind power plant and wind power plant |
| CN104201765A (en) * | 2014-08-28 | 2014-12-10 | 合肥联信电源有限公司 | One-use one-spare power type emergency power source |
| CN204216802U (en) * | 2014-10-21 | 2015-03-18 | 南京奥博电气有限公司 | A kind of high voltage converter synchronous switching device |
| CN204794770U (en) * | 2015-07-13 | 2015-11-18 | 中国恩菲工程技术有限公司 | Motor control means and system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169672A (en) * | 2016-12-07 | 2018-06-15 | 发那科株式会社 | fan motor controller |
| US10876537B2 (en) | 2016-12-07 | 2020-12-29 | Fanuc Corporation | Fan motor control device |
| CN108169672B (en) * | 2016-12-07 | 2021-03-16 | 发那科株式会社 | Fan motor control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104132420B (en) | Low-power-consumption standby circuit device, air conditioner and control method of air conditioner | |
| CN105278352B (en) | Oil-field flooding automatic control system and its method | |
| CN104991510A (en) | One-in-service-one-standby water pump variable frequency electric control system and control method | |
| CN106685271B (en) | The operating status control method of brushless dual-feed motor | |
| CN205636918U (en) | Multicomputer constant pressure water supply frequency conversion control system based on PLC | |
| CN204941881U (en) | A kind of constant pressure water supply automatical control system | |
| CN105119297A (en) | Method used for adaptive reactive power compensation of photovoltaic inverter | |
| CN204794770U (en) | Motor control means and system | |
| CN104967364A (en) | Motor control device and method | |
| CN207308081U (en) | Intelligent crusher control system | |
| CN103019148A (en) | Method for starting and stopping single equipment controlled by double relays | |
| CN103227505A (en) | Security section automatic interconnected control method and device for large gas-vapor combined cycle generator set | |
| CN202453756U (en) | Photovoltaic grid-connected inverter inside heating system | |
| CN202334410U (en) | Frequency conversion control system | |
| CN204790497U (en) | It is equipped with pump variable frequency electrical system to use one | |
| CN204947946U (en) | A kind of intelligent controlling system for beam-pumping unit adopting technology of Internet of things | |
| CN110266006A (en) | Power supply control circuit | |
| CN103470520B (en) | Large power power electronic appliance power cabinet volume adjusting apparatus | |
| CN201795575U (en) | Energy-saving system of central air conditioner | |
| CN112855512A (en) | Emergency starting method for water pump control system fault | |
| CN206205867U (en) | A kind of Based Intelligent Control energy-conservation flood pattern | |
| CN203330166U (en) | Frequency conversion energy-saving control device of extruding machine | |
| CN107956458A (en) | A kind of energy saving flood pattern of intelligent control | |
| CN202652139U (en) | Power frequency/variable frequency conversion circuit | |
| CN203146294U (en) | Small-size full-intelligent water supply control cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |
|
| RJ01 | Rejection of invention patent application after publication |