CN104734120B - Blower motor protection and fault detection system and method - Google Patents
Blower motor protection and fault detection system and method Download PDFInfo
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- CN104734120B CN104734120B CN201510107588.5A CN201510107588A CN104734120B CN 104734120 B CN104734120 B CN 104734120B CN 201510107588 A CN201510107588 A CN 201510107588A CN 104734120 B CN104734120 B CN 104734120B
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Abstract
The invention discloses a kind of protections of blower motor and fault detection system and method, when blower motor overtemperature occurs in the process of running for blower motor, temperature protection switch action; actuating signal is transmitted to controller; contactor control coil acts, and main contact disconnects, and blower motor is shut down.The one-off signal of temperature protection switch is sent into the counter of controller and is counted, and is counted to its action frequency.When blower motor is shut down certain time, after temperature protection switch restores normal, temperature protection switch restores signal transmission to controller, and contactor control coil acts, and main contact is closed, blower motor operation.When the accumulative action of counters count to temperature protection switch reaches the action frequency of setting, blower motor is shut down, and contactor is maintained at off-state.The present invention can detection blower fan motor overtemperature in time, avoid caused by blower motor overtemperature motor dead and scaling loss, be inherently eliminated the fire hazard because of caused by blower motor scaling loss.
Description
Technical field
The present invention relates to protection and fault detection circuits, being applied to field of track traffic blower motor more particularly, to one kind
Protection and fault detection system and method.
Background technology
A kind of important component of the wind turbine as field of track traffic, field of track traffic converter plant ventilation and heat with
And the exhaust gas in compartment is discharged and is played the important and pivotal role in fresh-air ventilation.As shown in Fig. 1, existing field of track traffic
Blower motor 3 usually powered by subordinate inverter 1, and controlled and protected by breaker 5.
This blower motor control protection electric circuit advantage in the prior art is：Circuit structure is simple, to blower motor
The failures such as overcurrent, short circuit can be effectively protected.But the motor for caused by blower motor due to stator winding overtemperature
Scaling loss and the failures such as dead but cannot be effectively detected out, while be difficult to be protected in time.
Invention content
In view of this, the purpose of the present invention is to provide a kind of protection of blower motor and fault detection system and method, energy
It is enough to detect blower motor overtemperature failure in time, blower motor is protected in time, avoids causing due to blower motor overtemperature failure
The phenomenon that motor is dead and scaling loss, to be inherently eliminated the fire hazard because of caused by blower motor scaling loss.
In order to achieve the above-mentioned object of the invention, the present invention specifically provides a kind of protection of blower motor and fault detection system
Technic relization scheme, blower motor protection and fault detection system, including：Control switch, blower motor and controller, the wind
It is provided with temperature protection switch in the stator winding of electromechanical machine, counter is provided in the controller.In the blower motor
When blower motor overtemperature occurring in operational process, the temperature protection switch action controls the control coil of the control switch
Action, and then the main contact for controlling the control switch disconnects, the blower motor is shut down, while the temperature protection switch
One-off signal is sent into the controller and is counted, and the counter in the controller is to the temperature protection switch
Action frequency is counted.When blower motor shutdown certain time, after the temperature protection switch restores normal, the temperature
The control coil action of the degree protection switch control control switch, and then the main contact for controlling the control switch is closed, institute
State blower motor operation.When the accumulative action of the counters count in the controller to the temperature protection switch reaches setting
Action frequency when, the controller sends out the control thread switching control circle actuating signal, and then controls the control and switch
Main contact disconnect, the blower motor is shut down, and the control is controlled after no longer being restored at this time by the temperature protection switch and is opened
It closes and closes, the control switch is always held at off-state.
The present invention also specifically provides the technic relization scheme of another blower motor protection and fault detection system, wind turbine
Electric motor protecting and fault detection system, including：Control switch, blower motor and controller, the stator winding of the blower motor
It is inside provided with temperature protection switch, counter is provided in the controller.Wind occurs in the blower motor operational process
When electromechanical machine overtemperature, the temperature protection switch action, the temperature protection switch actuating signal is transmitted to the controller, by
The controller controls the control coil action of the control switch, and then the main contact for controlling the control switch disconnects, institute
Blower motor shutdown is stated, while the one-off signal of the temperature protection switch is sent into the controller and is counted, institute
The counter stated in controller counts the action frequency of the temperature protection switch.When the blower motor is shut down centainly
Time, after the temperature protection switch restores normal, the temperature protection switch restores signal transmission to the controller, by institute
It states controller and controls the control coil action of the control switch, and then the main contact for controlling the control switch is closed, it is described
Blower motor is run.It is set when the accumulative action frequency of the counters count in the controller to the temperature protection switch reaches
When fixed action frequency, the controller sends out the control thread switching control circle actuating signal, and then controls the control and open
The main contact of pass disconnects, and the blower motor is shut down, and the controller no longer receives the temperature protection switch and restores to believe at this time
Number, the control switch is always held at off-state.
The present invention also specifically provides the technic relization scheme of the third blower motor protection and fault detection system, wind turbine
Electric motor protecting and fault detection system, including：Control switch, blower motor and controller, the stator winding of the blower motor
It is inside provided with temperature sensor, timer and counter are provided in the controller.In the blower motor operational process,
The temperature sensor monitors the temperature of the stator winding on-line, at the same by temperature monitoring signal be sent to the controller into
Row processing.The controller records the temperature monitoring signal of the temperature sensor, and the controller is to the temperature
Whether monitoring signals are more than that the threshold value set is judged.When overtemperature failure occurs for the stator winding of the blower motor, institute
It states controller and judges that the temperature monitoring signal of the temperature sensor is more than the threshold value of setting, the controller controls the control
The control coil of switch acts, and then the main contact for controlling the control switch disconnects, and the blower motor is shut down.The control
Counter in device counts the overtemperature number of stoppages of the stator winding, and the timer in the controller is simultaneously to institute
The downtime for stating blower motor carries out timing, when blower motor shutdown certain time, reaches and is set in the controller
Overtemperature recovery time, by the controller control it is described control switch control coil act, and then control it is described control open
The main contact of pass is closed, the blower motor operation.When tiring out for the counters count in the controller to the electronics winding
When the meter overtemperature number of stoppages reaches the number of stoppages of setting, the controller sends out the control thread switching control circle action letter
Number, and then the main contact for controlling the control switch disconnects, the blower motor is shut down, and the controller is no longer to described at this time
The downtime of blower motor carries out timing and controls the control switch closure, and the control switch is always held at disconnection shape
State.
Preferably, the control switch includes the contactor and breaker being serially connected, the control coil and main contact
It is arranged in the contactor.When the breaker overcurrent, short trouble occurs for the blower motor, the wind turbine is disconnected
Motor.
Preferably, the control switch includes breaker, and using the knot for installing shunt release additional on the breaker
Structure, the controller carry out breaking operation by controlling the shunt release to the breaker.
Preferably, the system also includes subordinate inverter, the controller uses motion control unit, the auxiliary inverse
Become device and provides power supply by control switch into the blower motor.
Preferably, the system also includes displays, and when the blower motor is shut down, the control switch is always held at
Off-state, and blower motor overtemperature failure alarm signal is transmitted through the network to the display.
In addition the present invention also specifically provides a kind of technic relization scheme of blower motor protection and fault detection method, wind
Machine electric motor protecting and fault detection method, include the following steps：
S101：When blower motor overtemperature occurs in the process of running for blower motor, in the blower motor stator winding
Temperature protection switch action, the control coil action of control contactor, and then the main contact for controlling the contactor disconnects, institute
Blower motor shutdown is stated, while the one-off signal of the temperature protection switch is sent into the controller and is counted, institute
The counter stated in controller counts the action frequency of the temperature protection switch；
S102：When the blower motor is shut down certain time, after the temperature protection switch restores normal, the temperature is protected
Shield switch controls the control coil action of the contactor, and then the main contact for controlling the contactor is closed, the wind turbine electricity
Machine is run；
S103：When the counters count to accumulative action frequency reach the action frequency of setting when, the controller
The contactor control coil actuating signal is sent out, and then the main contact for controlling the contactor disconnects, the blower motor stops
Machine controls the contactor and is closed after no longer being restored at this time by the temperature protection switch, the contactor is always held at disconnected
Open state.
The present invention also specifically provides the technic relization scheme of another blower motor protection and fault detection method, wind turbine
Electric motor protecting and fault detection method, include the following steps：
S201：When blower motor overtemperature occurs in the process of running for blower motor, in the blower motor stator winding
Temperature protection switch action, the temperature protection switch actuating signal is transmitted to controller, described in controller control
The control coil of contactor acts, and then the main contact for controlling the contactor disconnects, and the blower motor is shut down, while described
The one-off signal of temperature protection switch is sent into the controller and is counted, and the counter in the controller is to described
The action frequency of temperature protection switch is counted；
S202：When the blower motor is shut down certain time, after the temperature protection switch restores normal, the temperature is protected
Shield switch restores signal transmission to the controller, and the control coil that the contactor is controlled by the controller acts, in turn
The main contact for controlling the contactor is closed, the blower motor operation；
S203：It is set when the accumulative action frequency of the counters count in the controller to the temperature protection switch reaches
When fixed action frequency, the controller sends out the contactor control coil actuating signal, and then controls the contactor
Main contact disconnects, and the blower motor is shut down, and the controller no longer receives the temperature protection switch recovery signal, institute at this time
It states contactor and is always held at off-state.
The present invention also specifically provides the technic relization scheme of the third blower motor protection and fault detection method, wind turbine
Electric motor protecting and fault detection method, include the following steps：
S301：In blower motor operational process, the temperature sensor on-line monitoring in the blower motor stator winding
The temperature of the stator winding, while temperature monitoring signal is sent to controller and is handled；
S302：The controller records the temperature monitoring signal of the temperature sensor, and the controller is to institute
State whether temperature monitoring signal is more than that the threshold value set is judged, when the generation blower motor stator winding overtemperature failure
When, the controller judges that the temperature monitoring signal of the temperature sensor is more than the threshold value of setting, and the controller control connects
The control coil of tentaculum acts, and then the main contact for controlling the contactor disconnects, and the blower motor is shut down；
S303：Counter in the controller counts the overtemperature number of stoppages of the stator winding, the control
Timer in device processed carries out timing to the downtime of the blower motor simultaneously, when the blower motor shuts down a timing
Between, reach the overtemperature recovery time set in the controller, the control coil that the contactor is controlled by the controller moves
Make, and then the main contact for controlling the contactor is closed, the blower motor operation；
S304：It is set when the accumulative overtemperature number of stoppages of the counters count in the controller to the stator winding reaches
When the fixed number of stoppages, the controller sends out the contactor control coil actuating signal, and then controls the contactor
Main contact disconnects, and the blower motor is shut down, and the controller no longer counts the downtime of the blower motor at this time
When and control the contactor and be closed, the contactor is always held at off-state.
Preferably, the method further includes：It is disconnected by breaker when overcurrent, short trouble occurs in the blower motor
Open the process of the blower motor.
Preferably, the method further includes：When the blower motor is shut down, the control switch is always held at disconnection shape
When state, while blower motor overtemperature failure alarm signal being transmitted through the network to the process of display.
The blower motor protection provided by implementation aforementioned present invention and fault detection system and method, have following beneficial
Effect：
The present invention can in time to blower motor carry out overtemperature prote, and and failure blower motor is detected, prevent
Blower motor failure further expands and scaling loss, to eliminate the fire hazard because of caused by blower motor scaling loss.Also can simultaneously
Effective protection can be carried out in failures such as blower motor overcurrent, short circuits.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.It should be evident that the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other embodiments are obtained according to these attached drawings.
Fig. 1 is the connecting structure for electrical equipment schematic diagram of prior art blower motor Control protection system；
Fig. 2 is that blower motor protection of the present invention and a kind of connecting structure for electrical equipment of specific implementation mode of fault detection system show
It is intended to；
Fig. 3 is the attachment structure schematic diagram of the blower motor protection and fault detection system of the embodiment of the present invention 1；
Fig. 4 is the control principle block diagram of the blower motor protection and fault detection system of the embodiment of the present invention 1；
Fig. 5 is the attachment structure schematic diagram of the blower motor protection and fault detection system of the embodiment of the present invention 2；
Fig. 6 is the control principle block diagram of the blower motor protection and fault detection system of the embodiment of the present invention 2；
Fig. 7 is the attachment structure schematic diagram of the blower motor protection and fault detection system of the embodiment of the present invention 3；
Fig. 8 is the control principle block diagram of the blower motor protection and fault detection system of the embodiment of the present invention 3；
In figure：1- subordinate inverters, 2- control switches, 3- blower motors, 4- contactors, 5- breakers, 6- controllers, 7-
Display.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention carries out clear, complete description.Obviously, described embodiment is only
Only it is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
As shown in attached drawing 2 to attached drawing 8, the specific of blower motor of the present invention protection and fault detection system and method is given
Embodiment, the invention will be further described in the following with reference to the drawings and specific embodiments.
The specific embodiment of the invention proposes a variety of blower motor protections for being applied particularly to field of track traffic and failure
Detecting system and method, by the way that temperature protection switch or temperature sensor are added in blower motor stator winding, in wind turbine electricity
Three-phase contactor is accessed in machine power supply circuit, to control the open and close of blower motor.Meanwhile by further in circuit
Middle addition breaker, when overcurrent, short trouble occurs in blower motor, disconnection blower motor plays a protective role.The present invention is specific
The blower motor protection of embodiment description and fault detection system and method can detection blower fan motor overtemperature failure in time, to wind
Electromechanical machine carries out overtemperature prote, and is positioned in time to the blower motor of failure, prevents blower motor overtemperature failure further
Expand and cause motor dead and scaling loss, and then be inherently eliminated the fire hazard because of caused by blower motor scaling loss, greatly
Ground improves the safety and reliability of rail traffic vehicles operation.
As shown in Fig. 2, the specific embodiment of a kind of protection of blower motor and fault detection system, including：Contactor
4, breaker 5, embedment has the blower motor 3 of temperature protection switch or temperature sensor, and the transmission as controller 6 controls
Unit, display 7（Controller 6 and 7 two parts of display are not shown in Figure 2）.Pass through the stator winding in blower motor 3
Interior addition temperature protection switch or temperature sensor, three-phase contactor is accessed in the power supply circuit of blower motor 3（That is contactor
4）, to control the access and disconnection of blower motor 3.The specific embodiment of the invention is using motion control unit to blower motor 3
Overtemperature counted and judged, and by network by over temperature alarm signal be sent to display 7 carry out fan trouble show and
Judgement and prompt are replaced in repair, have fault diagnosis functions.Meanwhile the breaker 5 in circuit can occur in blower motor 3
Blower motor 3 is disconnected when the failures such as stream, short circuit, to play the role of further protection.Controller 6 removes in a particular embodiment
Use motion control unit（DCU, Drive Control Unit）, PLC can also be used（Programmable Logic
Controller, programmable controller）, the intelligent logicals control device such as microcomputer or intelligent controller replaces.Display 7
It may be used and above-mentioned intelligent logical control device（Controller 6）It integrates, is carried out by the pattern of other data transmissions
The display of blower motor fault alarm and temperature.Contactor 4 in attached drawing 2 and the position of breaker 5 are interchangeable；Or cancels and connecing
Tentaculum 4 installs shunt release additional on breaker 5, controls buckle releaser to protect blower motor 3 by motion control unit, adopts
With identical virtual protection and control principle, can also play the role of identical with specific embodiment shown in attached drawing 2.
Embodiment 1：
As shown in attached drawing 3 and attached drawing 4, blower motor protection and fault detection system, including：Control switch 2, blower motor
3 and controller 6.It is provided with temperature protection switch in the stator winding of blower motor 3, counter or tired is provided in controller 6
Add device.When blower motor overtemperature occurring in 3 operational process of blower motor, temperature protection switch action, control control switch 2
Control coil acts, and then the main contact for controlling control switch 2 disconnects, and blower motor 3 is shut down, while the one of temperature protection switch
Secondary actuating signal is sent into controller 6 and is counted, the action of counter or accumulator to temperature protection switch in controller 6
Number is counted.When blower motor 3 is shut down certain time, after temperature protection switch restores normal, temperature protection switch controls
The control coil action of switch 2 is controlled, and then the main contact for controlling control switch 2 is closed, blower motor 3 is run.When controller 6
In counter or accumulator count on the accumulative action frequency of temperature protection switch and reach the action frequency of setting（Such as：2 times with
On）When, controller 6 sends out control 2 control coil actuating signal of switch, and the main contact to control control switch 2 disconnects, wind turbine
Motor 3 is shut down, and control control switch 2 is closed after no longer being restored at this time by temperature protection switch, and control switch 2 is always held at disconnected
Open state.
Embodiment 2：
As shown in attached drawing 5 and attached drawing 6, blower motor protection and fault detection system, including：Control switch 2, blower motor
3 and controller 6.It is provided with temperature protection switch in the stator winding of blower motor 3, counter or tired is provided in controller 6
Add device.When blower motor overtemperature occurring in 3 operational process of blower motor, temperature protection switch action, temperature protection switch moves
Make signal transmission to controller 6, the control coil that control switch 2 is controlled by controller 6 acts, and then controls control switch 2
Main contact disconnects, and blower motor 3 is shut down.The one-off signal of temperature protection switch is sent into controller 6 and is counted simultaneously,
Counter or accumulator in controller 6 count the action frequency of temperature protection switch.When blower motor 3 is shut down centainly
Time, after temperature protection switch restores normal, temperature protection switch restores signal transmission to controller 6, is controlled and is controlled by controller 6
The control coil action of switch 2 is made, and then the main contact for controlling control switch 2 is closed, blower motor 3 is run.When in controller 6
Counter or accumulator count on the accumulative action of temperature protection switch and reach the action frequency of setting（Such as：2 times or more）When,
Controller 6 sends out control 2 control coil actuating signal of switch, and the main contact to control control switch 2 disconnects, blower motor 3
It shuts down, controller 6 no longer receives temperature protection switch recovery signal at this time, and control switch 2 is always held at off-state.
Embodiment 3：
As shown in attached drawing 7 and attached drawing 8, blower motor protection and fault detection system, including：Control switch 2, blower motor
3 and controller 6.It is provided with temperature sensor in the stator winding of blower motor 3, timer or cumulative is provided in controller 6
Device, and it is further provided with counter.In 3 operational process of blower motor, temperature sensor monitors the temperature of stator winding on-line
Degree, while temperature monitoring signal is sent to controller 6 and is handled.Temperature monitoring signal of the controller 6 to temperature sensor
It is recorded, and the temperature monitoring signal is sent to display 7 by train network and is shown, in order to monitor on-line simultaneously
Show the running temperature of blower motor 3.Whether controller 6 is more than also that the threshold value set judges to temperature monitoring signal, when
When overtemperature failure occurs for the stator winding of blower motor 3, controller 6 judges that the temperature monitoring signal of temperature sensor is more than setting
Threshold value, controller 6 control control switch 2 control coil action, and then control control switch 2 main contact disconnection, wind turbine
Motor 3 is shut down.Counter or accumulator in controller 6 count the overtemperature number of stoppages of stator winding, in controller 6
Timer timing is carried out to the downtime of blower motor 3 simultaneously.When the shutdown certain time of blower motor 3, reach controller 6
The overtemperature recovery time of middle setting, the control coil that control switch 2 is controlled by controller 6 act, and then control control switch 2
Main contact is closed, and blower motor 3 is run.When in controller 6 counter or accumulator count on the accumulative overtemperature of stator winding
The number of stoppages reaches the number of stoppages of setting（Such as：2 times or more）When, controller 6 sends out control 2 control coil of switch action letter
Number, and then the main contact for controlling control switch 2 disconnects, blower motor 3 is shut down.Controller 6 no longer stops blower motor 3 at this time
The machine time carries out timing and controls the control closure of switch 2, and control switch 2 is always held at off-state.
Embodiment 4：
On the basis of previous embodiment 1-3, control switch 2 further comprises the contactor being serially connected 4 and breaker
5, control coil and main contact are arranged in contactor 4.When breaker 5 overcurrent, short trouble occurs for blower motor 3, break
Open blower motor 3.As another specific embodiment of the present invention, on the basis of previous embodiment 1-3, control switch 2 is also
May include breaker 5, and using the structure for installing shunt release additional on breaker 5, controller 6 is by controlling shunted exciter tripping
Device carries out breaking operation to breaker 5.
Embodiment 5：
On the basis of previous embodiment 1-4, system still further comprises display 7, when the shutdown of blower motor 3, control
Switch 2 is always held at off-state, and blower motor overtemperature failure alarm signal is transmitted through the network to display 7, carries
Show that the corresponding blower motor of operating personnel 3 remains to replace.System still further comprises subordinate inverter 1, and controller 6 is using transmission
Control unit, subordinate inverter 1 are that blower motor 3 provides power supply by controlling switch 2.
Embodiment 6：
Blower motor is protected and fault detection method, includes the following steps：
S101：When in the process of running blower motor overtemperature occurs for blower motor 3, in 3 stator winding of blower motor
Temperature protection switch acts, the control coil action of control contactor 4, and then the main contact of control contactor 4 disconnects, wind turbine electricity
Machine 3 is shut down, while the one-off signal of temperature protection switch is sent into controller 6 and is counted, the counter in controller 6
Or accumulator counts the action frequency of temperature protection switch；
S102：When blower motor 3 is shut down certain time, after temperature protection switch restores normal, temperature protection switch controls
The control coil of contactor 4 acts, and then the main contact of control contactor 4 is closed, and blower motor 3 is run；
S103：When the accumulative action frequency that counter or accumulator count on reaches the action frequency of setting, controller 6
4 control coil actuating signal of contactor is sent out, and then the main contact of control contactor 4 disconnects, blower motor 3 is shut down, at this time not
Control contactor 4 is closed after being restored again by temperature protection switch, and contactor 4 is always held at off-state.
Embodiment 7：
Blower motor is protected and fault detection method, includes the following steps：
S201：When in the process of running blower motor overtemperature occurs for blower motor 3, in 3 stator winding of blower motor
Temperature protection switch acts, and temperature protection switch actuating signal is transmitted to controller 6, by the control of 6 control contactor 4 of controller
Coil motion, and then the main contact of control contactor 4 disconnects, blower motor 3 is shut down, while the one-off of temperature protection switch
Signal is sent into controller 6 and is counted, the counter or accumulator in controller 6 to the action frequency of temperature protection switch into
Row statistics；
S202：When blower motor 3 is shut down certain time, after temperature protection switch restores normal, temperature protection switch restores
Signal transmission is acted, and then the main contact of control contactor 4 to controller 6 by the control coil of 6 control contactor 4 of controller
It is closed, blower motor 3 is run；
S203：When in controller 6 counter or accumulator count on the accumulative action frequency of temperature protection switch and reach
When the action frequency of setting, controller 6 sends out 4 control coil actuating signal of contactor, and then the main contact of control contactor 4 is disconnected
It opens, blower motor 3 is shut down, and controller 6 no longer receives temperature protection switch recovery signal at this time, and contactor 4 is always held at disconnected
Open state.
Embodiment 8：
Blower motor is protected and fault detection method, includes the following steps：
S301：In 3 operational process of blower motor, the temperature sensor on-line monitoring in 3 stator winding of blower motor is fixed
The temperature of sub- winding, while temperature monitoring signal is sent to controller 6 and is handled；
S302：Controller 6 records the temperature monitoring signal of temperature sensor, and controller 6 is to temperature monitoring signal
Whether it is more than that the threshold value set is judged that, when 3 stator winding overtemperature failure of blower motor occurs, controller 6 judges temperature
The temperature monitoring signal of sensor is more than the threshold value of setting, the control coil action of 6 control contactor 4 of controller, and then control
The main contact of contactor 4 disconnects, and blower motor 3 is shut down；
S303：Counter or accumulator in controller 6 count the overtemperature number of stoppages of stator winding, controller
Timer in 6 carries out timing to the downtime of blower motor 3 simultaneously, when the shutdown certain time of blower motor 3, reaches control
The overtemperature recovery time set in device 6 is acted by the control coil of 6 control contactor 4 of controller, and then control contactor 4
Main contact is closed, and blower motor 3 is run；
S304：When in controller 6 counter or accumulator count on the accumulative overtemperature number of stoppages of stator winding and reach
When the number of stoppages of setting, controller 6 sends out 4 control coil actuating signal of contactor, and then the main contact of control contactor 4 is disconnected
It opens, blower motor 3 is shut down, and controller 6 no longer carries out timing to the downtime of blower motor 3 at this time and control contactor 4 closes
It closes, contactor 4 is always held at off-state.
Embodiment 9：
Blower motor is protected and fault detection method further includes：When overcurrent, short trouble occurs in blower motor 3, pass through
Breaker 5 disconnects the process of blower motor 3.
Embodiment 10：
When blower motor 3 is shut down, control switch 2 is when being always held at off-state, while by blower motor overtemperature failure
Alarm signal is transmitted through the network to the process of display 7.
Pass through the blower motor protection of implementation specific embodiment of the invention description and fault detection system and method, Neng Gouda
To following technique effect：
The present invention can in time to blower motor carry out overtemperature prote, and and failure blower motor is detected, prevent
Blower motor failure further expands and scaling loss, to eliminate the fire hazard because of caused by blower motor scaling loss.Also can simultaneously
Effective protection can be carried out in failures such as blower motor overcurrent, short circuits.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention has been disclosed with preferred embodiment as above, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from the Spirit Essence and technical solution of the present invention, all using in the methods and techniques of the disclosure above
Appearance makes many possible changes and modifications to technical solution of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention is made to the above embodiment any simple according to the technical essence of the invention
Modification, equivalent replacement, equivalence changes and modification, still fall within technical solution of the present invention protection in the range of.
Claims (11)
1. a kind of blower motor protection and fault detection system, which is characterized in that including：Subordinate inverter（1）, control switch
（2）, blower motor（3）And controller（6）, the controller（6）Using motion control unit, the subordinate inverter（1）It is logical
Cross the control switch（2）For the blower motor（3）Power supply is provided；The blower motor（3）Stator winding in be provided with
Temperature protection switch, the controller（6）In be provided with counter；In the blower motor（3）Wind turbine occurs in operational process
When motor overtemperature, the temperature protection switch action controls the control switch（2）Control coil action, and then control institute
State control switch（2）Main contact disconnect, the blower motor（3）It shuts down, while the one-off of the temperature protection switch
Signal is sent into the controller（6）In counted, the controller（6）In counter the temperature protection switch is moved
It is counted as number；When the blower motor（3）It shuts down certain time, it is described after the temperature protection switch restores normal
Temperature protection switch controls the control switch（2）Control coil action, and then control the control and switch（2）Main contact
It is closed, the blower motor（3）Operation；When the controller（6）In counters count to the tired of the temperature protection switch
When meter action frequency reaches the action frequency of setting, the controller（6）Send out the control switch（2）Control coil action letter
Number, and then control the control switch（2）Main contact disconnect, the blower motor（3）It shuts down, at this time no longer by the temperature
Protection switch controls the control switch after restoring（2）It is closed, the control switch（2）It is always held at off-state.
2. a kind of blower motor protection and fault detection system, which is characterized in that including：Subordinate inverter（1）, control switch
（2）, blower motor（3）And controller（6）, the controller（6）Using motion control unit, the subordinate inverter（1）It is logical
Cross the control switch（2）For the blower motor（3）Power supply is provided；The blower motor（3）Stator winding in be provided with
Temperature protection switch, the controller（6）In be provided with counter；In the blower motor（3）Wind turbine occurs in operational process
When motor overtemperature, the temperature protection switch action, the temperature protection switch actuating signal is transmitted to the controller（6）,
By the controller（6）Control the control switch（2）Control coil action, and then control the control and switch（2）Master
Contact disconnects, the blower motor（3）It shuts down, while the one-off signal of the temperature protection switch is sent into the controller
（6）In counted, the controller（6）In counter the action frequency of the temperature protection switch is counted；When
The blower motor（3）It shuts down certain time, after the temperature protection switch restores normal, the temperature protection switch restores letter
Number it is transmitted to the controller（6）, by the controller（6）Control the control switch（2）Control coil action, and then control
Make the control switch（2）Main contact be closed, the blower motor（3）Operation；When the controller（6）In counter system
When counting the accumulative action frequency of the temperature protection switch and reaching the action frequency of setting, the controller（6）It sends out described
Control switch（2）Control coil actuating signal, and then control the control switch（2）Main contact disconnect, the blower motor
（3）It shuts down, at this time the controller（6）It no longer receives the temperature protection switch and restores signal, the control switch（2）Always
It is maintained at off-state.
3. a kind of blower motor protection and fault detection system, which is characterized in that including：Subordinate inverter（1）, control switch
（2）, blower motor（3）And controller（6）, the controller（6）Using motion control unit, the subordinate inverter（1）It is logical
Cross the control switch（2）For the blower motor（3）Power supply is provided；The blower motor（3）Stator winding in be provided with
Temperature sensor, the controller（6）In be provided with timer and counter；In the blower motor（3）In operational process, institute
The temperature that temperature sensor monitors the stator winding on-line is stated, while temperature monitoring signal is sent to the controller（6）
It is handled；The controller（6）The temperature monitoring signal of the temperature sensor is recorded, the controller（6）It is right
Whether the temperature monitoring signal is more than that the threshold value set is judged；When the blower motor（3）Stator winding occur it is super
When reviewing knowledge already acquired hinders, the controller（6）Judge that the temperature monitoring signal of the temperature sensor is more than the threshold value of setting, the control
Device（6）Control the control switch（2）Control coil action, and then control the control and switch（2）Main contact disconnect, institute
State blower motor（3）It shuts down；The controller（6）In counter the overtemperature number of stoppages of the stator winding is counted
Number, the controller（6）In timer simultaneously to the blower motor（3）Downtime carry out timing, when the wind turbine
Motor（3）Certain time is shut down, the controller is reached（6）The overtemperature recovery time of middle setting, by the controller（6）Control
The control switch（2）Control coil action, and then control the control and switch（2）Main contact be closed, wind turbine electricity
Machine（3）Operation；When the controller（6）In the accumulative overtemperature number of stoppages of counters count to the stator winding reach and set
When the fixed number of stoppages, the controller（6）Send out the control switch（2）Control coil actuating signal, and then described in control
Control switch（2）Main contact disconnect, the blower motor（3）It shuts down, at this time the controller（6）No longer to wind turbine electricity
Machine（3）Downtime carry out timing and control the control switching（2）It is closed, the control switch（2）It is always held at disconnected
Open state.
4. blower motor protection according to any one of claim 1 to 3 and fault detection system, it is characterised in that：Institute
State control switch（2）Including the contactor being serially connected（4）And breaker（5）, the control coil and main contact are arranged in institute
State contactor（4）In；The breaker（5）For the blower motor（3）When there is overcurrent, short trouble, the wind is disconnected
Electromechanical machine（3）.
5. blower motor protection according to any one of claim 1 to 3 and fault detection system, it is characterised in that：Institute
State control switch（2）Including breaker（5）, and using in the breaker（5）The upper structure for installing shunt release additional, the control
Device processed（6）By controlling the shunt release to the breaker（5）Carry out breaking operation.
6. blower motor protection according to claim 4 and fault detection system, it is characterised in that：The system also includes
Display（7）, when the blower motor（3）It shuts down, the control switch（2）It is always held at off-state, and wind turbine is electric
Machine overtemperature failure alarm signal is transmitted through the network to the display（7）.
7. it is a kind of based on system described in claim 1 blower motor protection and fault detection method, which is characterized in that including with
Lower step：
S101：Work as blower motor（3）When blower motor overtemperature occurring in the process of running, the blower motor（3）Stator winding
Interior temperature protection switch action, control contactor（4）Control coil action, and then control the contactor（4）Master touch
Head disconnects, the blower motor（3）It shuts down, while the one-off signal of the temperature protection switch is sent into the controller
（6）In counted, the controller（6）In counter the action frequency of the temperature protection switch is counted；
S102：When the blower motor（3）It shuts down certain time, after the temperature protection switch restores normal, the temperature is protected
Shield switch controls the contactor（4）Control coil action, and then control the contactor（4）Main contact be closed, it is described
Blower motor（3）Operation；
S103：When the counters count to accumulative action frequency reach the action frequency of setting when, the controller（6）Hair
Go out the contactor（4）Control coil actuating signal, and then control the contactor（4）Main contact disconnect, wind turbine electricity
Machine（3）It shuts down, the contactor is controlled after no longer being restored at this time by the temperature protection switch（4）It is closed, the contactor（4）
It is always held at off-state.
8. it is a kind of based on system described in claim 2 blower motor protection and fault detection method, which is characterized in that including with
Lower step：
S201：Work as blower motor（3）When blower motor overtemperature occurring in the process of running, the blower motor（3）Stator winding
Interior temperature protection switch action, the temperature protection switch actuating signal are transmitted to controller（6）, by the controller（6）
Control contactor（4）Control coil action, and then control the contactor（4）Main contact disconnect, the blower motor（3）
It shuts down, while the one-off signal of the temperature protection switch is sent into the controller（6）In counted, the controller
（6）In counter the action frequency of the temperature protection switch is counted；
S202：When the blower motor（3）It shuts down certain time, after the temperature protection switch restores normal, the temperature is protected
Shield switch restores signal transmission to the controller（6）, by the controller（6）Control the contactor（4）Control coil
Action, and then control the contactor（4）Main contact be closed, the blower motor（3）Operation；
S203：When the controller（6）In the accumulative action frequency of counters count to the temperature protection switch reach and set
When fixed action frequency, the controller（6）Send out the contactor（4）Control coil actuating signal, and then connect described in control
Tentaculum（4）Main contact disconnect, the blower motor（3）It shuts down, at this time the controller（6）No longer receive the temperature protection
Switch restores signal, the contactor（4）It is always held at off-state.
9. it is a kind of based on system described in claim 3 blower motor protection and fault detection method, which is characterized in that including with
Lower step：
S301：In blower motor（3）In operational process, the blower motor（3）Temperature sensor in stator winding is supervised online
The temperature of the stator winding is surveyed, while temperature monitoring signal is sent to controller（6）It is handled；
S302：The controller（6）The temperature monitoring signal of the temperature sensor is recorded, the controller（6）It is right
Whether the temperature monitoring signal is more than that the threshold value set is judged, when the generation blower motor（3）Stator winding overtemperature
When failure, the controller（6）Judge that the temperature monitoring signal of the temperature sensor is more than the threshold value of setting, the controller
（6）Control contactor（4）Control coil action, and then control the contactor（4）Main contact disconnect, the blower motor
（3）It shuts down；
S303：The controller（6）In counter the overtemperature number of stoppages of the stator winding is counted, the control
Device（6）In timer simultaneously to the blower motor（3）Downtime carry out timing, when the blower motor（3）It shuts down
Certain time reaches the controller（6）The overtemperature recovery time of middle setting, by the controller（6）Control the contactor
（4）Control coil action, and then control the contactor（4）Main contact be closed, the blower motor（3）Operation；
S304：When the controller（6）In the accumulative overtemperature number of stoppages of counters count to the stator winding reach and set
When the fixed number of stoppages, the controller（6）Send out the contactor（4）Control coil actuating signal, and then connect described in control
Tentaculum（4）Main contact disconnect, the blower motor（3）It shuts down, at this time the controller（6）No longer to the blower motor
（3）Downtime carry out timing and controlling the contactor（4）It is closed, the contactor（4）It is always held at off-state.
10. the blower motor protection according to any one of claim 7 to 9 and fault detection method, which is characterized in that institute
The method of stating further includes：When the blower motor（3）When there is overcurrent, short trouble, pass through breaker（5）Disconnect the wind turbine electricity
Machine（3）Process.
11. blower motor protection according to claim 10 and fault detection method, which is characterized in that the method is also wrapped
It includes：When the blower motor（3）It shuts down, the control switch（2）When being always held at off-state, while blower motor being surpassed
Warm failure alarm signal is transmitted through the network to display（7）Process.
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| CN106655101A (en) * | 2016-10-31 | 2017-05-10 | 广东美的制冷设备有限公司 | Household electrical appliance and over-current protection device and method of power factor corrector |
| CN106655102A (en) * | 2016-10-31 | 2017-05-10 | 广东美的制冷设备有限公司 | Power factor corrector over-current protection device and home appliance |
| DE102017001560A1 (en) * | 2017-02-20 | 2018-08-23 | Wilo Se | 1Method and arrangement for protecting an electric motor from overheating |
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| CN110979051A (en) * | 2019-11-29 | 2020-04-10 | 南京康尼新能源汽车零部件有限公司 | Charging device with abnormal connection detection function and control method |
| CN112611037B (en) * | 2020-12-10 | 2023-11-03 | 青岛海信日立空调***有限公司 | Air conditioner and fault judging method for single-phase motor for air conditioner |
| CN114899944B (en) * | 2022-04-14 | 2023-07-18 | 昂顿科技（上海）有限公司 | Communication management machine |
| CN115159025A (en) * | 2022-07-18 | 2022-10-11 | 天地(榆林)开采工程技术有限公司 | Control method and device of belt conveyor and belt conveyor |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |
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