CN118249699A - Speed regulation control device of alternating-current series excited brush motor applied to high-pressure pump - Google Patents
Speed regulation control device of alternating-current series excited brush motor applied to high-pressure pump Download PDFInfo
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- CN118249699A CN118249699A CN202410334513.XA CN202410334513A CN118249699A CN 118249699 A CN118249699 A CN 118249699A CN 202410334513 A CN202410334513 A CN 202410334513A CN 118249699 A CN118249699 A CN 118249699A
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- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 32
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0822—Integrated protection, motor control centres
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0827—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors responsive to underload or no-load, e.g. pump-off control circuits for pump motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The application discloses an alternating current series excited brush motor speed regulation control device applied to a high-pressure pump, and belongs to the technical field of motor control. In order to solve the technical problem of the application of the alternating current series excited brush motor on the water pump product in the aspect of speed regulation control reliability; the key points of the technical scheme are that the power supply comprises a power supply module: the power supply module comprises a power supply input end, wherein the power supply input end is used for being connected with an alternating current power supply in a voltage range of 110V-230V, and the power supply input end is provided with a power supply output end, and the power supply output end outputs a working power supply required by the power utilization module, and the power utilization module comprises: the microprocessor module is responsible for receiving and processing signals; zero crossing detection module connects zero line and live wire of power input end, feeds back zero crossing signal to microprocessor module, and speed governing drive module carries out stepless speed regulation to the motor through microprocessor module output's drive signal, can reliably carry out stepless speed regulation, stable control water pressure, the unusual effect of carrying out the quick protection of work.
Description
Technical Field
The application relates to the technical field of speed regulation control of alternating-current series excited brush motors, in particular to a speed regulation control device of an alternating-current series excited brush motor applied to a high-pressure pump.
Background
The AC series excited brush motor is one motor type and combines the features of AC power supply, series excited winding design and brush technology. The following is a detailed description of an ac series brush motor:
The basic structure is as follows: the AC series excited brush motor is mainly composed of stator, rotor, brush and armature winding. The stator typically includes a core and windings, which are fixed parts of the motor. The rotor is the rotating part of the motor, on which brushes are mounted for transmitting electric current from the stator to the rotor, thereby generating a turning moment.
Working principle: the alternating current series excited brush motor is powered by an alternating current power supply, and speed regulation is realized by changing the voltage of an armature power supply or the number of magnetic poles. When current is passed through the stator windings, a magnetic field is generated, which in turn generates a turning moment in the rotor. Brushes play a critical role in this process, which ensures that current can be efficiently transferred from the stator to the rotor.
The performance characteristics are as follows: the alternating current series excited brush motor has the advantages of high rotating speed, large moment, small volume, light weight and the like. Meanwhile, the structure is relatively simple, and the maintenance cost is low. However, due to the presence of brushes, certain friction and losses may occur, affecting the efficiency and life of the motor.
Application field: the alternating current series excited brush motor has wide application in various fields due to the characteristics of high efficiency, reliability and easy maintenance. Particularly those requiring high torque and low speed operation, such as: high pressure water pump, high pressure airless spray machine, etc., alternating current series excited brush motor can often exert its unique advantage.
The motor of the above type is a prior product, but different speed regulation control devices have different service lives for the operation and use of the motor. Based on the adaptation of the application environment of the high-pressure airless sprayer on the high-pressure water pump, corresponding speed regulation control requirements are needed, and the high-pressure airless sprayer is more stable, reliable and safe.
Disclosure of Invention
In view of the above-described drawbacks (problems) of the prior art, the present application provides a speed regulation control device for an ac series excited brush motor applied to a high-pressure pump, in order to provide stable, reliable, and safe speed regulation control of the motor, which is suitable for use in a high-pressure water pump or the like.
In order to achieve the above and other related objects, the present application adopts the following technical scheme: an AC series excited brush motor speed regulation control device applied to a high-pressure pump comprises a power supply module: the power supply is provided with a power supply input end, the power supply input end is used for being connected with an alternating current power supply in a voltage range of 110V-230V, the power supply output end is provided with a power supply output end, the power supply output end outputs working power required by the power utilization module,
The power consumption module includes:
The microprocessor module is responsible for receiving and processing signals;
The zero-crossing detection module is connected with a zero line and a fire wire at the input end of the power supply, feeds back zero-crossing signals to the microprocessor module,
The speed regulation driving module is used for stepless speed regulation of the motor through a driving signal output by the microprocessor module;
The zero-crossing detection module comprises a first current-limiting resistor, a second current-limiting resistor, a rectifier bridge module, an isolation output module and a frequency mode selection module, wherein the zero line end is sequentially connected with the second current-limiting resistor, the first current-limiting resistor and one input end of the rectifier bridge module in series, the live wire end is connected to the other input end of the rectifier bridge module, the output end of the rectifier bridge module is connected to the microprocessor module through the isolation output module, the frequency mode selection module is connected with the microprocessor module to trigger the microprocessor module to selectively control whether the first current-limiting resistor is in short circuit or not,
When the zero-crossing detection module feeds back the detection frequency to the microprocessor module to be 50Hz, the frequency mode selection module puts the current limiting resistor I into operation;
When the zero-crossing detection module feeds back the detection frequency to the microprocessor module as 60Hz, the frequency mode selection module shields the current limiting resistor from short circuit.
Optionally, the speed regulation driving module includes driving switch module, resistance R23, resistance R24, resistance R26, electric capacity C22, electric capacity C23, electric capacity C24, electric capacity C25, bidirectional thyristor Q1, inductance L2, and inductance L3, electric capacity C25 is gone up in parallel on the motor link, the second zero line end is connected through inductance L3 to one end of electric capacity C25, the second live wire end is connected through inductance L2 to the other end of electric capacity C25, one end of electric capacity C24, one end of resistance R24, one end of bidirectional thyristor Q1, and one end of resistance R26, the other end ground connection of electric capacity C24, one end of resistance R23 and one end of electric capacity C22 are connected to the other end of resistance R26, the other end of electric capacity C23 is connected to the live wire end, the other end of bidirectional thyristor Q1 and the other end of electric capacity C22, the control end of bidirectional thyristor Q1 and the other end connection driving switch module of resistance R23 receive the break-make and make.
Optionally, the live wire end is connected with an overcurrent detection module, the overcurrent detection module comprises a chip U4 with a chip model of CC6910S0, and the overcurrent detection module outputs current samples to the microprocessor module.
Optionally, the microprocessor module is further connected with a potentiometer speed regulation module, the potentiometer speed regulation module comprises a potentiometer, a connector I and a resistor-capacitor filter, the potentiometer is detachably connected to the resistor-capacitor filter through the connector I, and the output end of the resistor-capacitor filter is directly connected with one pin of the microprocessor module.
Optionally, the frequency mode selection module includes triode module and opto-coupler switch, and the triode module connects microprocessor module's signal to drive opto-coupler switch work, opto-coupler switch's output realizes on-off control.
Optionally, the driving switch module and the frequency mode selection module adopt the same circuit structure.
Optionally, the microprocessor module is further connected with a pressure detection amplifying module, the pressure detection amplifying module comprises a pressure sensor and a differential amplifying circuit, the pressure sensor is detachably connected with the input end of the differential amplifying circuit through a connector II, the output end of the differential amplifying circuit provides pressure signals for the microprocessor module,
The microprocessor module is preset with timing time, and when the pressure sensor detects that the liquid pressure does not reach the preset pressure set value, the motor is turned off under the condition that the motor is operated.
Optionally, the microprocessor module outputs a shutdown protection instruction or provides a fault prompt instruction after receiving a related signal of abnormal operation of the motor.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the technical scheme can be applied to alternating current series excited brush motors, particularly to high-pressure water pump products, and can realize stepless speed regulation control of the motors, wherein the speed range is from 0 to the highest rotating speed of the motors;
2. The microprocessor module dynamically controls the rotating speed of the alternating current series excited brush motor according to the data provided by the pressure sensor through setting the potentiometer module, so that the stable output of the internal pressure of the machine is realized;
3. In the working process, the current limiting resistor can be self-adaptive to different voltages and frequencies and can be automatically regulated internally, so that the zero-crossing sampling point is more accurate;
4. The automatic overload protection device has no-load protection and overcurrent protection, can greatly improve the reliability and safety of work, can provide error or fault prompt, and is convenient for users to self-check.
Drawings
FIG. 1 is a schematic circuit diagram of a power module according to an embodiment of the application;
FIG. 2 is a diagram illustrating an example microprocessor module according to an embodiment of the present application;
FIG. 3 is an exemplary diagram of a zero crossing detection module of an embodiment of the present application;
FIG. 4 is an example diagram of a frequency mode selection module;
FIG. 5 is an exemplary diagram of a timing drive module;
FIG. 6 is an example diagram of an over-current detection module;
FIG. 7 is an example diagram of a potentiometer governor module;
fig. 8 is an exemplary diagram of a pressure detection amplification module.
The main reference numerals illustrate:
1. A power module; 11. a power input; 12. a power supply output terminal; 2. a microprocessor module; 3. a zero-crossing detection module; 31. a first current limiting resistor; 32. a current limiting resistor II; 33. a rectifier bridge module; 34. isolating the output module; 35. a frequency mode selection module; 351. a triode module; 352. an optocoupler switch; 4. a speed regulation driving module; 41. driving the switch module; 5. an overcurrent detection module; 6. a potentiometer speed regulation module; 61. a first connector; 62. a resistance-capacitance filter; 7. a pressure detection amplification module; 71. a second connector; 72. and a differential amplifying circuit.
Detailed Description
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and the illustrations only show the components related to the present application, not the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The following describes the embodiments of the present application further with reference to the drawings.
Examples:
The embodiment of the application discloses an alternating current series excited brush motor speed regulation control device applied to a high-pressure pump, which is shown by referring to FIG. 1 and comprises a power supply module 1: the power supply device is provided with a power supply input end 11, wherein the power supply input end 11 is used for being connected with an alternating current power supply in a voltage range of 110V-230V, and is provided with a power supply output end 12, and the power supply output end 12 outputs working power required by an electricity utilization module. The power input terminal 11 is divided into a live wire terminal L1 and a neutral wire terminal N1. The input lines of the live wire end and the null wire end are also provided with a fuse F1 for overcurrent protection, and a choke coil FL1 for suppressing common mode interference. A resistor R2 is arranged between the live wire and the zero wire and is a piezoresistor, so that overvoltage protection is realized. The power module 1 can convert an input alternating current power supply, output a 5V working power supply and work for the power module.
The power consumption module includes:
the microprocessor module 2 is responsible for receiving and processing signals. Referring to FIG. 2, a chip model HC32F003C4PA-TSSOP20TR is used, and the microprocessor can receive and process various signals. The external circuit module can also be provided with a display (LCD display screen module), an indicator lamp and the like.
In fig. 3, the zero-crossing detection module 3 is connected to the zero line and the fire line of the power input terminal 11, and feeds back a zero-crossing signal to the microprocessor module 2. The zero-crossing detection module 3 comprises a first current-limiting resistor 31, a second current-limiting resistor 32, a rectifier bridge module 33, an isolation output module 34 and a frequency mode selection module 35, wherein the zero line end is sequentially connected with the first current-limiting resistor 32, the first current-limiting resistor 31 and one input end of the rectifier bridge module 33 in series, the live line end is connected to the other input end of the rectifier bridge module 33, the output end of the rectifier bridge module 33 is connected to the microprocessor module 2 through the isolation output module 34, and the frequency mode selection module 35 is connected with the microprocessor module 2 to trigger the microprocessor module to selectively control whether the first current-limiting resistor 31 is in short circuit or not.
When the zero-crossing detection module 3 feeds back the detection frequency to the microprocessor module 2 to be 50Hz, the frequency mode selection module 35 puts the current limiting resistor I31 into operation; when the zero-crossing detection module 3 feeds back to the microprocessor module 2 that the detection frequency is 60Hz, the frequency mode selection module 35 short-circuits and shields the current limiting resistor one 31.
It is known that the ac power input of the present embodiment is 110V-230V, wherein some ac power standards in our country are different from those in foreign countries, so that the frequency mode selection module 35 can perform free switching.
Either a 110V/60HZ standard power supply or a 230V/50Hz standard power supply can be adapted to the device of the present application; after determining the frequency, the frequency mode selection module 35 operates. This ensures that the microprocessor module 2 receives the accuracy of the zero crossing interrupt.
In fig. 3, the end point Fre1 and the end point Fre2 are connected to the corresponding positions in fig. 4. Specifically, in fig. 4, the frequency mode selection module 35 includes a triode module 351 and an optocoupler switch 352, where the triode module is connected to the signal of the microprocessor module 2 and drives the optocoupler switch 352 to work, and the output end of the optocoupler switch 352 realizes on-off control. The triode module 351 mainly uses resistors R14 and R17 and a triode Q3 to form a bias switch circuit, and the signal output by the microprocessor module 2, namely the endpoint Fre-detection thereof, is a high-low level signal, so as to control the triode Q1 to be turned on or off, thereby controlling the opto-coupler switch 352 to be turned on or off. The optocoupler switch 352 is available in model MOC3021.
In addition, referring to fig. 5, the speed regulation driving module 4 performs stepless speed regulation on the motor by the driving signal output by the microprocessor module 2.
The speed regulation driving module 4 comprises a driving switch module 41, a resistor R23, a resistor R24, a resistor R26, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a bidirectional thyristor Q1, an inductor L2 and an inductor L3, wherein the capacitor C25 is connected in parallel on the motor connecting end, one end of the capacitor C25 is connected with a second zero line end through the inductor L3, the other end of the capacitor C25 is connected with a second live line end through the inductor L2, the second live line end is connected with one end of the capacitor C24, one end of the resistor R24, one end of the bidirectional thyristor Q1 and one end of the resistor R26, the other end of the resistor C24 is grounded, one end of the resistor R23 is connected with one end of the capacitor C22, the other end of the resistor R26 is connected with one end of the capacitor C23, the other end of the capacitor C23 is connected with the other end of the bidirectional thyristor Q1 and the other end of the capacitor C22, and the control end of the bidirectional thyristor Q1 and the other end of the resistor R23 are connected with the driving switch module 41 and controlled by the driving switch module.
As can be seen from the above, the driving switch module 41 and the frequency mode selection module 35 have the same circuit structure.
The speed regulation of motor drive is realized by controlling the on-off of the bidirectional thyristor Q1.
On the basis of the above scheme, referring to fig. 6, an overcurrent detection module 5 is connected to the live wire end, the overcurrent detection module 5 includes a chip U4 with a chip model number of CC6910S0, and the overcurrent detection module 5 outputs current samples to the microprocessor module 2. And detecting the current condition of the power supply, and if current overload occurs, timely implementing shutdown protection.
In order to facilitate the speed regulation operation, referring to fig. 7, the microprocessor module 2 is further connected with a potentiometer speed regulation module 6, where the potentiometer speed regulation module 6 includes a potentiometer, a first connector 61, and a resistor-capacitor filter 62, the potentiometer is detachably connected to the resistor-capacitor filter 62 through the first connector 61, and an output end of the resistor-capacitor filter 62 is directly connected to one pin of the microprocessor module 2. The potentiometer can be detached and replaced, so that the potentiometer is convenient to overhaul and maintain.
Meanwhile, referring to fig. 8, the microprocessor module2 is further connected with a pressure detection amplifying module 7, the pressure detection amplifying module 7 includes a pressure sensor and a differential amplifying circuit 72, the pressure sensor is detachably connected to an input end of the differential amplifying circuit 72 through a second connector 71, an output end of the differential amplifying circuit 72 provides a pressure signal to the microprocessor module2, the microprocessor module2 is preset with a timing time, and when the pressure sensor detects that the liquid pressure does not reach a preset pressure set value, the motor is turned off under the condition of motor operation. The differential amplification circuit 72 may amplify the signal so that the sensed pressure data is more reliable.
Optionally, the microprocessor module 2 outputs a shutdown protection instruction or provides a fault prompting instruction after receiving a related signal of abnormal operation of the motor.
The microprocessor module 2 is internally provided with PID regulation and control, and can carry out PID speed regulation on the motor through the speed regulation driving module 4, so that reliable stepless speed regulation is realized.
Therefore, the scheme of the application can be applied to alternating current series excited brush motors, especially to high-pressure water pump products, and can realize stepless speed regulation control of the motors, wherein the speed range is from 0 to the highest rotating speed of the motors; the microprocessor module 2 dynamically controls the rotating speed of the alternating current series excited brush motor according to the data provided by the pressure sensor through setting the potentiometer module, so that the stable output of the internal pressure of the machine is realized; in the working process, the current limiting resistor can be self-adaptive to different voltages and frequencies and can be automatically regulated internally, so that the zero-crossing sampling point is more accurate; the automatic overload protection device has no-load protection and overcurrent protection, can greatly improve the reliability and safety of work, can provide error or fault prompt, and is convenient for users to self-check.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. An alternating current series excited brush motor speed regulation control device applied to a high-pressure pump comprises a power supply module (1): the power supply device is provided with a power supply input end (11), wherein the power supply input end (11) is used for being connected with an alternating current power supply in a voltage range of 110V-230V and is provided with a power supply output end (12), and the power supply output end (12) outputs working power required by an electricity utilization module,
The power consumption module includes:
the microprocessor module (2) is used for receiving and processing signals;
the zero-crossing detection module (3) is connected with a zero line and a fire wire of the power input end (11) and feeds back a zero-crossing signal to the microprocessor module (2),
The speed regulation driving module (4) is used for stepless speed regulation of the motor through a driving signal output by the microprocessor module (2);
The zero-crossing detection module (3) comprises a first current-limiting resistor (31), a second current-limiting resistor (32), a rectifier bridge module (33), an isolation output module (34) and a frequency mode selection module (35), wherein the zero line end is sequentially connected with the first current-limiting resistor (32), the first current-limiting resistor (31) and one input end of the rectifier bridge module (33) in series, the live wire end is connected to the other input end of the rectifier bridge module (33), the output end of the rectifier bridge module (33) is connected to the microprocessor module (2) through the isolation output module (34), the frequency mode selection module (35) is connected with the microprocessor module (2) to trigger the first current-limiting resistor (31) to selectively control whether the first current-limiting resistor (31) is in short circuit or not,
When the zero-crossing detection module (3) feeds back the detection frequency to the microprocessor module (2) to be 50Hz, the frequency mode selection module (35) puts the current-limiting resistor I (31) into operation;
when the zero-crossing detection module (3) feeds back the detection frequency to the microprocessor module (2) to be 60Hz, the frequency mode selection module (35) short-circuits and shields the first current limiting resistor (31).
2. The ac series excited brushed motor speed regulation control device for a high-pressure pump according to claim 1, wherein the speed regulation driving module (4) comprises a driving switch module (41), a resistor R23, a resistor R24, a resistor R26, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a bidirectional thyristor Q1, an inductor L2 and an inductor L3, the capacitor C25 is connected in parallel to the motor connection terminal, one end of the capacitor C25 is connected to a second zero line terminal through the inductor L3, the other end of the capacitor C25 is connected to a second live line terminal through the inductor L2, the second live line terminal is connected to one end of the capacitor C24, one end of the resistor R24, one end of the bidirectional thyristor Q1 and one end of the resistor R26, the other end of the resistor R24 is grounded, the other end of the resistor R24 is connected to one end of the resistor R23 and one end of the capacitor C22, the other end of the resistor R26 is connected to one end of the capacitor C23, the other end of the bidirectional thyristor Q1 and the other end of the capacitor C22, and the other end of the bidirectional thyristor Q1 and the other end of the resistor C22 are connected to the driving module (41).
3. The speed regulation control device for the alternating current series excited brush motor applied to the high-pressure pump according to claim 2 is characterized in that an overcurrent detection module (5) is connected to the live wire end, the overcurrent detection module (5) comprises a chip U4 with a chip model of CC6910S0, and current samples are output to the microprocessor module (2) by the overcurrent detection module (5).
4. The alternating current series excited brush motor speed regulation control device applied to the high-pressure pump according to claim 1, wherein the microprocessor module (2) is further connected with a potentiometer speed regulation module (6), the potentiometer speed regulation module (6) comprises a potentiometer, a first connector (61) and a resistor-capacitor filter (62), the potentiometer is detachably connected to the resistor-capacitor filter (62) through the first connector (61), and the output end of the resistor-capacitor filter (62) is directly connected with one pin of the microprocessor module (2).
5. The speed regulation control device for the alternating current series excited brush motor applied to the high-pressure pump according to claim 2, wherein the frequency mode selection module (35) comprises a triode module (351) and an optocoupler switch (352), the triode module is connected with signals of the microprocessor module (2) and drives the optocoupler switch (352) to work, and the output end of the optocoupler switch (352) realizes on-off control.
6. The speed regulation control device for the alternating current series excited brush motor applied to the high-pressure pump according to claim 5, wherein the driving switch module (41) and the frequency mode selection module (35) adopt the same circuit structure.
7. The alternating current series excited brush motor speed regulation control device applied to the high-pressure pump according to claim 1, wherein the microprocessor module (2) is further connected with a pressure detection amplifying module (7), the pressure detection amplifying module (7) comprises a pressure sensor and a differential amplifying circuit (72), the pressure sensor is detachably connected to the input end of the differential amplifying circuit (72) through a connector II (71), the output end of the differential amplifying circuit (72) provides a pressure signal for the microprocessor module (2),
The microprocessor module (2) is preset with timing time, and when the pressure sensor detects that the liquid pressure does not reach a preset pressure set value, the motor is turned off under the condition that the motor is operated.
8. The speed regulation control device for the alternating current series excited brush motor applied to the high-pressure pump according to claim 1, wherein the microprocessor module (2) outputs a shutdown protection instruction or provides a fault prompting instruction after receiving a related signal of abnormal motor operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410334513.XA CN118249699A (en) | 2024-03-22 | 2024-03-22 | Speed regulation control device of alternating-current series excited brush motor applied to high-pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410334513.XA CN118249699A (en) | 2024-03-22 | 2024-03-22 | Speed regulation control device of alternating-current series excited brush motor applied to high-pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118249699A true CN118249699A (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410334513.XA Pending CN118249699A (en) | 2024-03-22 | 2024-03-22 | Speed regulation control device of alternating-current series excited brush motor applied to high-pressure pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118249699A (en) |
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2024
- 2024-03-22 CN CN202410334513.XA patent/CN118249699A/en active Pending
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