CN116865630B - Motor variable-frequency speed regulation control system - Google Patents
Motor variable-frequency speed regulation control system Download PDFInfo
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- CN116865630B CN116865630B CN202310994916.2A CN202310994916A CN116865630B CN 116865630 B CN116865630 B CN 116865630B CN 202310994916 A CN202310994916 A CN 202310994916A CN 116865630 B CN116865630 B CN 116865630B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 230000008859 change Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000004458 analytical method Methods 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims description 86
- 238000006243 chemical reaction Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000010779 crude oil Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 4
- 239000013598 vector Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The application discloses a motor variable frequency speed regulation control system, which relates to the technical field of motor variable frequency control, wherein basic information of a motor is firstly acquired through a motor information acquisition module, meanwhile, oil layer information during starting is acquired through a starting information acquisition module, then a motor starting module sets starting parameters for the motor according to the oil layer information during starting, an operation monitoring module monitors an oil field in the acquisition process in real time to obtain monitoring data, a variable frequency analysis module analyzes the monitoring data, auxiliary information is compared with the real time data to obtain a liquid level change speed in the oil field, the liquid level change speed is multiplied by unit time to obtain oil field parameters of the next time period, the oil field parameters of the next time period are correspondingly processed to obtain operation parameters, and a motor adjusting module corresponds the received operation parameters to the time and adjusts the motor, so that the accurate adjustment of the motor variable frequency is realized.
Description
Technical Field
The application belongs to the technical field of motor variable frequency control, and particularly relates to a motor variable frequency speed regulation control system.
Background
The application of patent publication number CN108462425B discloses a variable frequency speed regulation control method and a variable frequency speed regulation control system of a single-phase motor, and M-axis deviation voltage and T-axis deviation voltage of a frequency converter are calculated; performing inverse PARK transformation on the M-axis deviation voltage and the T-axis deviation voltage to obtain a voltage angle V1 under two-phase static coordinates, and calculating a voltage vector amplitude value VOut; calculating a voltage angle V2 of the MT shaft and the two-phase static coordinates according to the magnetic flux identification; superposing the voltage angle V1 and the voltage angle V2 to calculate a voltage vector angle V3; according to a voltage space vector corresponding to the switching state of an inversion unit of the frequency converter and the voltage vector angle V3, calculating an adjacent basic space vector and a zero vector of a sector where the angle is located; calculating a given voltage vector; determining the action sequence of the basic space vectors according to the SVPWM method, calculating the action time of each basic space vector, and further outputting pulse modulation signals to control bridge arm time-sharing actions in the inversion unit to drive the single-phase motor to operate.
When offshore oil is extracted, the operation parameters of the variable frequency motor are required to be adjusted according to the corresponding acquisition information in the oil field in the oil extraction process, but certain delay exists in the variable frequency parameter change of the motor in the motor parameter adjustment process, so that the accuracy of the variable frequency motor adjustment is reduced.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art; therefore, the application provides a motor variable-frequency speed regulation control system which is used for solving the technical problems.
To achieve the above object, an embodiment according to a first aspect of the present application provides a variable frequency speed control system for a motor, including:
the starting information acquisition module is used for acquiring oil layer information during starting and transmitting the oil layer information to the motor starting module, wherein the oil layer information comprises oil pressure during starting and the liquid level depth of crude oil in an oil field;
the motor starting module is used for setting starting parameters for the motor according to oil layer information during starting and basic information of the motor, wherein the basic information refers to rated electric data of the motor and the operating range of frequency conversion of the motor, corresponding conveying pressure is obtained through oil pressure and liquid level depth during starting, and then the conveying pressure and the operating power of the motor are converted, so that the starting parameters of the motor are obtained;
the operation monitoring module is used for monitoring the collected oil fields in real time to obtain corresponding monitoring data, and transmitting the corresponding monitoring data to the frequency conversion analysis module, wherein the monitoring data comprise the real-time data of the oil fields and auxiliary information when the oil fields are collected;
the frequency conversion analysis module is used for receiving and analyzing the monitoring data, firstly extracting real-time data of an oil field in the monitoring data, converting the real-time data into theoretical parameters of motor operation, comparing the theoretical parameters with actual parameters to obtain compensation parameters of the motor, then extracting auxiliary information in the monitoring data, comparing the auxiliary information with the real-time data to obtain the liquid level change speed in the oil field, multiplying the liquid level change speed by unit time to obtain oil field parameters of the next time period, then carrying out corresponding processing on the oil field parameters of the next time period to obtain operation parameters, and transmitting the operation parameters and the corresponding operation time to the motor regulation control module;
and the motor adjusting control module is used for corresponding the received operation parameters with time and adjusting the parameters of the motor.
Preferably, the specific acquisition method of the starting parameters of the motor is as follows:
firstly extracting oil pressure at starting, marking the oil pressure as Fy, simultaneously marking the liquid level depth as Sy, and then adopting a formulaObtaining a conveying pressure Fs, wherein K is a preset coefficient;
then the obtained conveying pressure Fs and the operation power of the motor are converted, namely a formula is adoptedAnd obtaining the running power P of the motor, wherein t is preset time, and then, the running power P is corresponding to the starting parameters of the motor.
Preferably, the method for collecting the monitoring data comprises the following steps:
s1: firstly setting a time interval T, and then taking the starting time of a motor as the initial time, and collecting real-time data in an oil field at intervals of time T, wherein the real-time data specifically comprises real-time pressure of an oil layer, height of the oil layer and the like, and the time interval T is a preset value;
s2: and when the oilfield data is acquired, auxiliary information is acquired at the same time, wherein the auxiliary information refers to the speed of water injection in the oilfield.
Preferably, the specific acquisition method of the compensation parameter of the motor is as follows:
ST1: firstly, acquiring real-time data of an oil field in the monitoring data at the moment, and converting the monitoring data at the moment into theoretical parameters of a motor according to a processing mode in a motor starting module;
ST2: and meanwhile, acquiring the actual parameters of the motor running at the moment, carrying out difference processing on the theoretical parameters and the actual parameters, and taking the obtained difference as the compensation parameters of the motor running at the moment.
Preferably, the specific method for acquiring the liquid level change speed comprises the following steps:
according to the auxiliary information at the moment, acquiring the balance relation between the auxiliary information at the moment and the real-time data, namely firstly acquiring the volume speed of the oil layer in unit time according to the extraction speed of the oil layer, and simultaneously acquiring the volume speed of the water layer in unit time according to the water injection speed in the oil field, wherein the unit time is the time interval T;
the volume velocity of the oil layer was subtracted from the volume velocity of the water layer increase to obtain a changed volume velocity, which was marked as the liquid level change velocity.
Preferably, the specific acquisition method of the operation parameters is as follows:
according to the liquid level change speed, the liquid level change speed is multiplied by unit time to obtain parameters corresponding to the next time period, and meanwhile, according to the parameters, the parameters are processed in a mode of a motor starting module to obtain corresponding operation data, and meanwhile, the operation data is combined with compensation parameters to generate the operation parameters of the next time period.
Preferably, the system further comprises a motor information acquisition module, which is used for acquiring basic information of the motor and transmitting the basic information to the motor starting module and the frequency conversion analysis module.
Preferably, the motor control device further comprises an operation feedback module, wherein the operation feedback module is used for acquiring the input power and the output power when the motor operates, dividing the input power by the output power to obtain the operation efficiency of the motor, comparing the operation efficiency of the motor with the preset efficiency, generating a corresponding adjusting signal when the operation efficiency is smaller than the preset efficiency, and transmitting the adjusting signal to the frequency conversion analysis module.
Preferably, the motor adopts a main phase-shifting transformer to supply power, and the wiring mode of the voltage in the main phase-shifting transformer adopts a wiring mode of a triangle with extended edges.
Compared with the prior art, the application has the beneficial effects that: firstly, acquiring oil layer information during starting, setting starting parameters for the motor according to the oil layer information during starting, then acquiring real-time data and auxiliary information in monitoring data, and correspondingly processing the real-time data and the auxiliary information to obtain operation data of the motor in each time period, so that accurate adjustment of the variable frequency motor is realized;
meanwhile, the operation power of the motor is monitored through an operation feedback module, so that closed-loop control of the variable frequency motor is realized, and the operation efficiency of the motor is improved.
Drawings
FIG. 1 is a schematic diagram of a system frame of the present application;
fig. 2 is a schematic diagram of a flow frame of the present application.
Detailed Description
The technical solutions of the present application will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
Referring to fig. 1 and 2, the application provides a motor variable frequency speed regulation control system, which comprises a motor information acquisition module, a motor starting module, a starting information acquisition module, an operation monitoring module, a variable frequency analysis module, a motor regulation control module and an operation feedback module;
the motor information acquisition module is used for acquiring basic information of the motor and transmitting the basic information to the motor starting module and the frequency conversion analysis module respectively, wherein the basic information of the motor comprises rated electric data of the motor and a frequency conversion operation range of the motor, and specific rated electric data comprises rated voltage, rated current and rated power;
the starting information acquisition module is used for receiving a starting signal, acquiring oil layer information when the starting signal is received, and transmitting the oil layer information to the motor starting module, wherein the starting signal is manually controlled, namely, equipment is manually controlled to start and stop, and the oil layer information comprises oil pressure during starting, the liquid level depth of crude oil in an oil field and the like;
the motor starting module is used for presetting starting parameters for the motor according to oil layer information during starting and basic information of the motor, and the specific method for setting the starting parameters is as follows:
firstly extracting oil pressure at starting, marking the oil pressure as Fy, simultaneously marking the liquid level depth as Sy, and then adopting a formulaObtaining a conveying pressure Fs, wherein K is a preset coefficient, and the specific value of the conveying pressure Fs is set by related professionals;
then the obtained conveying pressure Fs and the operation power of the motor are converted, namely a formula is adoptedObtaining the running power P of the motor, wherein t is preset time, then, corresponding the running power P to the starting parameters of the motor, and transmitting the obtained starting parameters to a frequency conversion analysis module;
the operation monitoring module is used for monitoring the collected oil field in real time to obtain corresponding monitoring data, wherein the monitoring data comprise real-time data of the oil field in the collection process and auxiliary information when the oil field is collected, and the specific monitoring method comprises the following steps:
s1: firstly setting a time interval T, and then taking the starting time of a motor as the initial time, and collecting real-time data in an oil field at intervals of time T, wherein the real-time data specifically comprises real-time pressure of an oil layer, height of the oil layer and the like, the time interval T is a preset value, and the specific value of the time interval T is set by related professionals;
s2: when oil field data are collected, auxiliary information is collected at the same time, the auxiliary information refers to the speed of water injection in an oil field, and water injection is needed to be carried out at the bottom of the oil field in the process of collecting the oil field, so that the purpose is to improve the bottom pressure and assist crude oil to flow out of the bottom layer;
s3: then, the operation monitoring module transmits the monitoring data to the frequency conversion analysis module respectively;
the frequency conversion analysis module is used for carrying out real-time analysis on the received monitoring data according to the received monitoring data, and simultaneously predicting the oil field condition of the next time interval T according to the data information at the moment, so as to generate corresponding frequency conversion parameters, and the specific analysis method is as follows:
ST1: firstly, acquiring real-time data of an oil field in the monitoring data at the moment, and converting the monitoring data at the moment into theoretical parameters of a motor according to a processing mode in a motor starting module;
ST2: meanwhile, acquiring actual parameters of the motor running at the moment, carrying out difference processing on the theoretical parameters and the actual parameters, and taking the obtained difference as compensation parameters of the motor running at the moment;
ST3: according to the auxiliary information at the moment, acquiring the balance relation between the auxiliary information at the moment and the real-time data, namely firstly acquiring the volume speed of the oil layer in unit time according to the extraction speed of the oil layer, and simultaneously acquiring the volume speed of the water layer in unit time according to the water injection speed in the oil field, wherein the unit time is the time interval T;
ST4: subtracting the increased volume velocity of the water layer from the decreased volume velocity of the oil layer to obtain a changed volume velocity, and marking the changed volume velocity as a liquid level change velocity, wherein the liquid level change velocity is a vector, when the liquid level change velocity is a positive value, the liquid level is reduced, and when the liquid level change velocity is a negative value, the liquid level is increased;
ST5: then according to the liquid level change speed, multiplying the liquid level change speed by unit time to obtain parameters corresponding to the next time period, and simultaneously according to the parameters, processing the parameters according to the mode to obtain corresponding operation data, and simultaneously combining the operation data with the compensation parameters to generate the operation parameters of the next time period;
the variable frequency analysis module transmits the operation parameters of the next time period to the motor adjusting module;
the motor adjusting control module corresponds the received operation parameters to time according to the received operation parameters and adjusts the received operation parameters, so that accurate adjustment is realized, the time delay of the motor in frequency conversion adjustment is reduced, and the accurate control of the frequency conversion adjustment is improved.
Example two
On the basis of the first embodiment, the motor further comprises an operation feedback module, wherein the operation feedback module is used for monitoring the operation power of the motor, and the specific monitoring process is as follows:
the method comprises the steps of obtaining motor parameters when a motor runs, wherein the motor parameters comprise input power and output power when the motor runs, dividing the input power by the output power to obtain the running efficiency of the motor, comparing the running efficiency of the motor with preset efficiency, generating corresponding adjusting signals when the running efficiency of the motor is smaller than the preset efficiency, transmitting the adjusting signals to a frequency conversion analysis module, and re-analyzing the parameters by the frequency conversion adjustment module according to the adjusting signals to obtain the running parameters, so that the running efficiency of the motor is improved.
Example III
The motor in the embodiment adopts a main phase-shifting transformer to supply power, and the wiring mode of the voltage in the main phase-shifting transformer adopts a wiring mode of a triangle with extended edges.
Example IV
The method is used for fusing and implementing the first embodiment, the second embodiment and the third embodiment.
The partial data in the formula are all obtained by removing dimension and taking the numerical value for calculation, and the formula is a formula closest to the real situation obtained by simulating a large amount of collected data through software; the preset parameters and the preset threshold values in the formula are set by those skilled in the art according to actual conditions or are obtained through mass data simulation.
The working principle of the application is as follows: the method comprises the steps of firstly collecting basic information of a motor through a motor information acquisition module, meanwhile, collecting oil layer information during starting through a starting information acquisition module, then setting starting parameters for the motor according to the oil layer information during starting, namely, according to oil pressure and liquid level depth during starting, obtaining corresponding conveying pressure, then converting the conveying pressure and operating power of the motor to obtain starting parameters of the motor, performing real-time monitoring on an oil field in the collection to obtain monitoring data through an operation monitoring module, analyzing the monitoring data through a frequency conversion analysis module, namely, firstly extracting real-time data of the oil field in the monitoring data, converting the real-time data into theoretical parameters of motor operation, comparing the theoretical parameters with actual parameters to obtain compensation parameters of the motor, then extracting auxiliary information in the monitoring data, comparing the auxiliary information with the real-time data to obtain a liquid level change speed in the oil field, multiplying the liquid level change speed by unit time to obtain parameters of a next time period, then correspondingly processing the oil field parameters of the next time period to obtain the operating parameters, and then adjusting the received operating parameters and the motor through a motor adjusting module to realize frequency conversion accurate adjustment of the motor.
The above embodiments are only for illustrating the technical method of the present application and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present application may be modified or substituted without departing from the spirit and scope of the technical method of the present application.
Claims (4)
1. A motor variable frequency speed regulation control system is characterized by comprising:
the starting information acquisition module is used for acquiring oil layer information during starting and transmitting the oil layer information to the motor starting module, wherein the oil layer information comprises oil pressure during starting and the liquid level depth of crude oil in an oil field;
the motor starting module is used for setting starting parameters for the motor according to oil layer information during starting and basic information of the motor, wherein the basic information refers to rated electric data of the motor and the operation range of motor frequency conversion, corresponding conveying pressure is obtained through oil pressure and liquid level depth during starting, and then the conveying pressure and the operation power of the motor are converted, so that the starting parameters of the motor are obtained, and the specific motor starting parameters are obtained in the following way:
firstly extracting oil pressure at starting, marking the oil pressure as Fy, simultaneously marking the liquid level depth as Sy, and then adopting a formulaObtaining a conveying pressure Fs, wherein K is a preset coefficient;
then the obtained conveying pressure Fs and the operation power of the motor are converted, namely a formula is adoptedObtaining the running power P of the motor, wherein t is preset time, and then, the running power P is corresponding to the starting parameters of the motor;
the operation monitoring module is used for monitoring the collected oil field in real time to obtain corresponding monitoring data, and transmitting the corresponding monitoring data to the frequency conversion analysis module, wherein the monitoring data comprises the real-time data of the oil field and auxiliary information when the oil field is collected, and the specific monitoring data acquisition method comprises the following steps:
s1: firstly setting a time interval T, and then taking the starting time of a motor as the initial time, and collecting real-time data in an oil field at intervals of time T, wherein the real-time data specifically comprises the real-time pressure of an oil layer and the height of the oil layer, and the time interval T is a preset value;
s2: when oil field data is collected, auxiliary information is collected at the same time, wherein the auxiliary information refers to the speed of water injection in the oil field;
the frequency conversion analysis module is used for receiving and analyzing the monitoring data, firstly extracting real-time data of an oil field in the monitoring data, converting the real-time data into theoretical parameters of motor operation, comparing the theoretical parameters with actual parameters to obtain compensation parameters of the motor, then extracting auxiliary information in the monitoring data, comparing the auxiliary information with the real-time data to obtain the liquid level change speed in the oil field, multiplying the liquid level change speed by unit time to obtain oil field parameters of the next time period, then correspondingly processing the oil field parameters of the next time period to obtain operation parameters, and transmitting the operation parameters and the corresponding operation time to the motor adjustment control module, wherein the specific analysis method comprises the following steps:
firstly, acquiring real-time data of an oil field in the monitoring data at the moment, and converting the monitoring data at the moment into theoretical parameters of a motor according to a processing mode in a motor starting module;
meanwhile, acquiring actual parameters of the motor running at the moment, carrying out difference processing on the theoretical parameters and the actual parameters, and taking the obtained difference as compensation parameters of the motor running at the moment;
according to the auxiliary information at the moment, acquiring the balance relation between the auxiliary information at the moment and the real-time data, namely firstly acquiring the volume speed of the oil layer in unit time according to the extraction speed of the oil layer, and simultaneously acquiring the volume speed of the water layer in unit time according to the water injection speed in the oil field, wherein the unit time is the time interval T;
subtracting the increased volume velocity of the water layer from the decreased volume velocity of the oil layer to obtain a changed volume velocity, and marking the changed volume velocity as a liquid level change velocity;
according to the liquid level change speed, multiplying the liquid level change speed by unit time to obtain a parameter corresponding to the next time period, and simultaneously, according to the parameter, processing the parameter according to a mode in a motor starting module to obtain corresponding operation data, and simultaneously, combining the operation data with the compensation parameter to generate the operation parameter of the next time period;
and the motor adjusting control module is used for corresponding the received operation parameters with time and adjusting the parameters of the motor.
2. The variable frequency speed control system of claim 1, further comprising a motor information acquisition module for acquiring basic information of the motor and transmitting the basic information to the motor starting module and the variable frequency analysis module.
3. The variable frequency speed control system of claim 1, further comprising an operation feedback module for obtaining an input power and an output power when the motor is operated, dividing the input power by the output power to obtain an operation efficiency of the motor, comparing the operation efficiency of the motor with a preset efficiency, and generating a corresponding adjustment signal and transmitting the adjustment signal to the variable frequency analysis module when the operation efficiency is less than the preset efficiency.
4. The variable frequency speed control system of a motor according to claim 1, wherein the motor is powered by a main phase-shifting transformer, and the voltage in the main phase-shifting transformer is wired by a triangle with a prolonged edge.
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| CN202310994916.2A CN116865630B (en) | 2023-08-09 | 2023-08-09 | Motor variable-frequency speed regulation control system |
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| CN202310994916.2A CN116865630B (en) | 2023-08-09 | 2023-08-09 | Motor variable-frequency speed regulation control system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246144Y (en) * | 2008-03-14 | 2009-05-27 | 中国石油大学(北京) | Oil well frequency conversion control system and data acquisition control terminal |
| CN108462425A (en) * | 2018-01-24 | 2018-08-28 | 深圳市海浦蒙特科技有限公司 | The variable frequency regulating speed control method and system of monophase machine |
| CN109162675A (en) * | 2018-09-14 | 2019-01-08 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of pressure control oil production method |
| CN114086926A (en) * | 2021-11-17 | 2022-02-25 | 国网河北省电力有限公司沧州供电分公司 | Control method and device for oilfield mechanical production system and oilfield mechanical production system |
-
2023
- 2023-08-09 CN CN202310994916.2A patent/CN116865630B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246144Y (en) * | 2008-03-14 | 2009-05-27 | 中国石油大学(北京) | Oil well frequency conversion control system and data acquisition control terminal |
| CN108462425A (en) * | 2018-01-24 | 2018-08-28 | 深圳市海浦蒙特科技有限公司 | The variable frequency regulating speed control method and system of monophase machine |
| CN109162675A (en) * | 2018-09-14 | 2019-01-08 | 天津大港油田石油工程研究院钻采技术开发有限公司 | A kind of pressure control oil production method |
| CN114086926A (en) * | 2021-11-17 | 2022-02-25 | 国网河北省电力有限公司沧州供电分公司 | Control method and device for oilfield mechanical production system and oilfield mechanical production system |
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