CN117183765B - Control method, system and equipment of permanent magnet synchronous motor - Google Patents
Control method, system and equipment of permanent magnet synchronous motor Download PDFInfo
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Abstract
The application discloses a control method, a control system and control equipment of a permanent magnet synchronous motor, comprising the following steps: receiving zero torque control information of a permanent magnet synchronous motor sent by a control assembly of a new energy vehicle; and responding to the zero torque control information, acquiring a first solution stored in a local memory, and sending the first solution to a power battery matched with the permanent magnet synchronous motor so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution. And after the zero torque control is finished, the monitored real-time torque data during the zero torque control is monitored, and the first solution is updated according to the real-time torque data. According to the scheme, the first solution stored in the local memory is directly obtained, so that hysteresis output working current caused by an operation process is reduced, the reverse dragging moment generated by the permanent magnet synchronous motor when the new energy vehicle slides can be timely reduced, the resistance is further reduced, and the endurance mileage of the new energy vehicle is increased.
Description
Technical Field
The application relates to the technical field of new energy vehicles, in particular to a control method, a control system and control equipment of a permanent magnet synchronous motor.
Background
The permanent magnet synchronous motor has the advantages of high power density, high energy conversion efficiency, wide speed regulation range, small volume, light weight and the like, and is widely applied to the fields of industry, civilian use and military use, in particular to the field of civilian new energy vehicles.
When the new energy vehicle slides after accelerator loss in the running process, the control strategy of the new energy vehicle on the permanent magnet synchronous motor is zero torque control, but due to the existence of back electromotive force, the permanent magnet synchronous motor can generate reverse dragging torque in the actual situation, so that the resistance of the new energy vehicle in the sliding process is increased.
Disclosure of Invention
The invention aims to provide a control method, a control system and control equipment for a permanent magnet synchronous motor, which can predict a current value output by a power battery to the permanent magnet synchronous motor according to historical driving data of a new energy vehicle, can timely reduce the reverse dragging moment generated by the permanent magnet synchronous motor when the new energy vehicle slides, and increases the endurance mileage of the new energy vehicle.
The application provides a control method of a permanent magnet synchronous motor, which comprises the following steps: receiving zero torque control information of a permanent magnet synchronous motor sent by a control assembly of a new energy vehicle; and responding to the zero torque control information, acquiring a first solution stored in a local memory, and sending the first solution to a power battery matched with the permanent magnet synchronous motor so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution. And after the zero torque control is detected to be finished, updating the first solution according to the real-time torque data detected during the zero torque control.
Optionally, before the obtaining the first solution stored in the local memory, the method further includes: first rotational speed data is acquired, and a first solution stored in a local memory is acquired according to the first rotational speed data.
Optionally, the method for acquiring the first rotational speed data and the first solution stored in the local memory according to the rotational speed data comprises the following steps: responding to the zero torque control information, and acquiring first rotation speed data; judging a speed interval of the new energy vehicle according to the first rotational speed data; and acquiring a first solution corresponding to the speed interval according to the speed interval.
Optionally, the real-time torque data updates the first solution of the corresponding speed interval according to the speed interval.
Optionally, the method for updating the first solution according to the real-time torque data comprises the following steps: predicting according to the real-time torque data and the historical torque data stored in the local memory to obtain predicted torque; generating a new first solution from the predicted torque; the new first solution is used to replace the first solution stored in the local memory.
Alternatively, the predicted torque is predicted using a moving weighted average method based on the live torque data and the historical torque data stored in the local memory.
Optionally, the control method of the permanent magnet synchronous motor further includes: and determining the effect of the zero torque control according to the monitored rotating speed change data during the zero torque control, and adjusting the weight of the real-time torque data when the moving weighted average method is predicted according to the effect of the zero torque control.
The control system of the permanent magnet synchronous motor comprises a control assembly of the new energy vehicle, a monitoring module and a zero torque control module; the control assembly of the new energy vehicle is configured to: and receiving a zero torque control instruction input by a user, and sending zero torque control information of the permanent magnet synchronous motor to the zero torque control module according to the zero torque control instruction input by the user.
The monitoring module is configured to: and monitoring the rotating speed information of the permanent magnet synchronous motor, and sending the rotating speed information to the zero torque control module.
The zero torque control module is configured to: and receiving the zero torque control instruction, responding to the zero torque control instruction, receiving the rotating speed information sent by the monitoring module, acquiring a first solution stored in a local memory according to the rotating speed information, and sending the first solution to a power battery.
Optionally, the monitoring module is further configured to monitor torque of the permanent magnet synchronous motor.
The application also provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the method.
The beneficial effects of this application include:
the application provides a control method, a control system and control equipment of a permanent magnet synchronous motor, which are used for directly acquiring a first solution stored in a local memory through responding to torque control information, and sending the first solution to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution, and updates the first solution according to real-time torque data monitored during zero torque control. According to the scheme, the first solution stored in the local memory is directly obtained, so that hysteresis output working current caused by an operation process is reduced, the reverse dragging moment generated by the permanent magnet synchronous motor when the new energy vehicle slides can be timely reduced, the resistance is further reduced, and the endurance mileage of the new energy vehicle is increased.
Drawings
For a clearer description of the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and should therefore not be considered limiting in scope, and that other related drawings can be obtained from these drawings without the inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a control method of a permanent magnet synchronous motor of the present application;
fig. 2 is a flow chart diagram II of a control method of the permanent magnet synchronous motor of the present application;
fig. 3 is a schematic structural diagram of a control system of the permanent magnet synchronous motor of the present application;
the realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.
In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
In the existing control method for the permanent magnet synchronous motor, the output current of the power battery is calculated according to real-time driving data so as to reduce the counter-drag torque generated by the permanent magnet synchronous motor when the new energy vehicle slides, but the calculation not only increases the calculation power of the new energy vehicle control assembly, but also obtains the output current value with certain hysteresis, so that the resistance cannot be timely reduced, and the endurance mileage of the new energy vehicle is influenced. In order to solve the above problems, the embodiments of the present application provide the following technical solutions to overcome the above problems.
Example 1
Referring to fig. 1, an embodiment of the present application provides a control method of a permanent magnet synchronous motor, which is executed by a zero torque control module, and includes:
s101, receiving zero torque control information of the permanent magnet synchronous motor sent by a control assembly of the new energy vehicle.
In the implementation, when the new energy vehicle is in a sliding state without stepping on an accelerator pedal by a driver in the running process of the new energy vehicle, the control assembly of the new energy vehicle can judge that the new energy vehicle is in the sliding state, and the control assembly generates zero torque control information of the permanent magnet synchronous motor based on the sliding state and sends the zero torque control information of the permanent magnet synchronous motor to the zero torque control module.
It should be noted that, the control assembly is connected with the zero torque control module through a bus, or an expansion interface is arranged on the control assembly, and the zero torque control module is connected with the control assembly through the expansion interface.
S102, responding to zero torque control information, and acquiring a first solution stored in a local memory.
In a specific implementation, after the zero torque control module receives the zero torque control information of the permanent magnet synchronous motor sent by the control assembly, the zero torque control module obtains a first solution stored in a local memory in response to the zero torque control information,
and S103, the first solution is sent to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution.
In a specific implementation, the zero torque control module sends the first solution to a power battery matched with the permanent magnet synchronous motor, the power battery receives the first solution, and the power battery outputs working current to the permanent magnet synchronous motor according to the first solution. The permanent magnet synchronous motor works under working current to reduce the reverse dragging moment generated by the permanent magnet synchronous motor when the new energy vehicle slides.
It should be noted that the content of the first solution may be: the working current of xxA-xxA is output to the permanent magnet synchronous motor. And, the original first solution is that before new energy leaves the factory, staff is stored in the local memory in advance.
And S104, after the zero torque control is finished, updating the first solution according to the real-time torque data monitored during the zero torque control.
In a specific implementation, when a driver presses an accelerator pedal or a brake pedal, the control assembly of the new energy vehicle sends a termination instruction to the zero torque control module according to the driving state of the new energy vehicle, the zero torque control module receives the termination instruction and updates the first scheme according to real-time torque data monitored during zero torque control in response to the termination instruction, so that the first scheme is used as a first solution stored in a local memory when the permanent magnet synchronous motor is controlled in zero torque next time.
In the existing control method for the permanent magnet synchronous motor, the output current of the power battery is calculated according to real-time driving data so as to reduce the counter-drag torque generated by the permanent magnet synchronous motor when the new energy vehicle slides, but the calculation not only increases the calculation power of the new energy vehicle control assembly, but also obtains the output current value with certain hysteresis, so that the resistance cannot be timely reduced, and the endurance mileage of the new energy vehicle is influenced. According to the control method of the permanent magnet synchronous motor, a large amount of calculation is not needed, the first solution stored in the local memory is directly obtained through the zero torque control module, and the first solution is sent to the power battery matched with the permanent magnet synchronous motor, so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution, the lag time of the working current output by the power battery is reduced, the permanent magnet synchronous motor works under the working current in time, and the reverse dragging moment generated by the permanent magnet synchronous motor when a new energy vehicle slides is reduced.
Referring to fig. 1-3, before obtaining the first solution stored in the local memory, an alternative embodiment further includes:
s201, acquiring first rotation speed data.
The zero torque control module obtains first rotation speed data sent by the control assembly or the monitoring module.
S202, acquiring a first solution stored in a local memory according to the first rotational speed data.
The zero torque control module obtains a first solution corresponding to the first rotation speed data stored in the local memory according to the first rotation speed data, and sends the first solution to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution.
An alternative embodiment, a method for acquiring first rotational speed data and acquiring a first solution stored in a local memory according to the rotational speed data, includes the following steps:
s301, responding to the zero torque control information, and acquiring first rotation speed data;
in specific implementation, the control assembly of the new energy vehicle sends zero torque control information of the permanent magnet synchronous motor to the zero torque control module, and the zero torque control module receives the zero torque control information and responds to the zero torque control information to start receiving first rotation speed data sent by the monitoring module.
S302, judging a speed interval of the new energy vehicle according to the first rotational speed data;
in specific implementation, the zero torque control module receives the first rotational speed data and judges a speed interval of the new energy vehicle according to the first rotational speed data. In this embodiment, the zero torque control module is not required to perform accurate data calculation, only the speed interval of the new energy vehicle running is required to be roughly calculated according to the first rotational speed data, and the accurate speed value is not required to be calculated, so that the delay time of judgment is reduced.
S303, acquiring a first solution corresponding to the speed interval according to the speed interval.
In specific implementation, the zero torque control module obtains a method of a first solution corresponding to a speed interval stored in a local memory according to the speed interval where the new energy vehicle runs, and sends the first solution to a power battery on the new energy vehicle.
Specifically, when the zero torque control module receives zero torque control information of the permanent magnet synchronous motor sent by the control assembly of the new energy vehicle, first rotation speed data of the permanent magnet synchronous motor are obtained, a speed interval of the new energy vehicle is judged according to the first rotation speed data, a first solution corresponding to the speed interval is obtained according to the speed interval, and the first solution is sent to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution. By adopting the arrangement form, the working current output by the power battery to the permanent magnet synchronous motor can be accurately obtained, and the counter-dragging moment generated by the permanent magnet synchronous motor when the new energy vehicle slides is further reduced
The present embodiment provides an embodiment in which the speed section includes at least a low speed section and a high speed section, based on the above embodiments.
The speed of the new energy automobile is 60km/h or less (including 60 km/h) as a low speed section, and the speed of the new energy automobile is 60km/h or more as a high speed section. Further, the low-speed section can be further subdivided into a slow section and a medium-low speed section, and the high-speed section can be further subdivided into a medium-high speed section and a fast section. The speed of the new energy vehicle in the low speed interval is below 30km/h (including 30 km/h), and the speed of the new energy vehicle in the medium-low speed interval is 30 km/h-60 km/h (including 60 km/h). The speed of the new energy vehicle in the middle-high speed interval is 60 km/h-80 km/h (including 80 km/h), and the speed of the new energy vehicle in the quick interval is more than 80 km/h.
When the zero torque control module judges that the new energy vehicle is in a slow state, a slow reference solution stored in a local memory is acquired based on the slow state, and the slow reference solution is sent to a power battery matched with the permanent magnet synchronous motor so that the power battery outputs corresponding working current to the permanent magnet synchronous motor according to the slow solution
When the zero torque control module judges that the new energy vehicle is in a medium-low speed state, the medium-low speed reference solution stored in the local memory is acquired based on the medium-low speed state, and the medium-low speed reference solution is sent to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs corresponding working current to the permanent magnet synchronous motor according to the medium-low speed solution.
When the zero torque control module judges that the new energy vehicle is in a medium-high speed state, the high-speed reference solution stored in the local memory is acquired based on the medium-high speed state, and the medium-high speed reference solution is sent to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs corresponding working current to the permanent magnet synchronous motor according to the medium-high speed solution
When the zero torque control module judges that the new energy vehicle is in a rapid state, a rapid reference solution stored in the local memory is acquired based on the rapid state, and the rapid reference solution is sent to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs corresponding working current to the permanent magnet synchronous motor according to the rapid solution.
The motors of the new energy vehicle have different reverse dragging moments at different rotating speeds, so that the speeds are divided by adopting the scheme, different speed intervals correspond to different solutions, and the zero torque control precision is further improved.
Further, the real-time torque data is also divided into low-speed interval torque and high-speed interval torque, the speed of the new energy vehicle is continuously reduced along with the sliding of the vehicle during the zero-torque control period, meanwhile, the torque of the permanent magnet synchronous motor is also changed, the monitoring module monitors the real-time torque data of the permanent magnet synchronous motor and sends the real-time torque data to the zero-torque control module through the bus, the zero-torque control module judges after receiving the real-time torque, the real-time torque data is in the low-speed interval torque or the high-speed interval torque, and the first solution of the corresponding speed interval is updated according to the speed interval.
Example 2
An alternative embodiment, a method for updating a first solution based on real-time torque data, comprises the steps of:
s401, predicting according to the real-time torque data and the historical torque data stored in the local memory to obtain predicted torque.
In a specific implementation, during zero torque control of the permanent magnet synchronous motor, a monitoring module of the new energy vehicle monitors real-time torque data of the permanent magnet synchronous motor in real time and transmits the real-time torque data to a zero torque control module through a bus, the zero torque control module receives the real-time torque data transmitted by the monitoring module and acquires historical torque data stored in a local memory, and the zero torque control module predicts according to the real-time torque data and the historical torque data to generate predicted rotating speed data
S402, generating a new first solution according to the predicted torque, and replacing the first solution stored in the local memory by using the new first solution.
The zero torque control module generates a new first solution based on the predicted torque and stores the new first solution in the local memory via the bus to replace the first solution stored in the local memory.
In an alternative embodiment, the predicted torque is predicted using a moving weighted average based on the live torque data and the historical torque data stored in the local memory.
The prediction results of this embodiment using the weighted moving average method are shown in table 1:
table 1:
the above table shows that the predicted data of the torque of the permanent magnet synchronous motor is predicted according to the historical torque speed data and the real-time torque data of the permanent magnet synchronous motor during the zero torque control, and it is noted that the historical torque data is monitored once every 0.5 second period during the zero torque control. Further, the data required to be stored in the local memory is the sixth column of table 1. It should be noted that, the zero torque control module may generate the predicted torque data by an exponential smoothing method according to the historical torque data and the real-time torque data.
In an alternative embodiment, the control method of the permanent magnet synchronous motor further includes: and determining the effect of the zero torque control according to the monitored rotating speed change data during the zero torque control, and adjusting the weight of the real-time torque data when the moving weighted average method is predicted according to the effect of the zero torque control.
Specifically, the power battery outputs corresponding working current to the permanent magnet synchronous motor according to the first solution, and the zero torque control module determines the effect of the zero torque control according to the monitored rotation speed change data during the zero torque control after the permanent magnet synchronous motor works under the working current to reduce the counter drag torque generated by the permanent magnet synchronous motor. If the control effect is good, the anti-dragging moment generated by the permanent magnet synchronous motor can be reduced well, the fact that the torque data are predicted more accurately last time is indicated, and when the torque data are predicted next time, the historical torque data weight is higher, and the real-time torque data weight is lower; if the control effect is not obvious and the anti-dragging torque generated by the permanent magnet synchronous motor cannot be reduced well, the inaccuracy of the previous prediction of the torque data is indicated, and the weight of the historical torque data is lower and the weight of the real-time torque data is higher in the next prediction.
The application also provides another optional implementation manner, and in a specific implementation process, the control method of the permanent magnet synchronous motor further comprises the following steps:
and generating predicted rotating speed data according to the first rotating speed data and the historical rotating speed data stored in the local memory by a weighted moving average method.
During zero torque control of the permanent magnet synchronous motor, the monitoring module of the new energy vehicle monitors first rotation speed data of the permanent magnet synchronous motor in real time, the first rotation speed data are sent to the zero torque control module through a bus, the zero torque control module receives the first rotation speed data sent by the monitoring module, obtains historical rotation speed data stored in a local memory, and the zero torque control module generates predicted rotation speed data through a weighted moving average method according to the first rotation speed data and the historical rotation speed data.
Example 3
An alternative embodiment, a method for updating a first solution based on real-time torque data, comprises the steps of:
s501, responding to zero torque control information, and acquiring first torque data;
in a specific implementation, zero torque control information of the permanent magnet synchronous motor is sent to a zero torque control module, the zero torque control module receives the zero torque control information and responds to the zero torque control information to start receiving first torque data sent by a monitoring module.
S502, judging a speed interval of the new energy vehicle according to the first torque data;
in specific implementation, the zero-torque control module receives the first torque data and judges a speed interval of the new energy vehicle according to the first torque data. In this embodiment, the zero torque control module is not required to perform accurate data calculation, only the speed interval of the new energy vehicle running is required to be roughly calculated according to the first torque data, and the accurate speed value is not required to be calculated, so that the delay time of judgment is reduced.
S503, according to the speed interval, a solution corresponding to the speed interval is obtained.
In specific implementation, the zero torque control module obtains a first solution corresponding to the running speed interval in the local memory according to the judged running speed interval of the new energy vehicle.
Specifically, when zero torque control information of a permanent magnet synchronous motor sent by a control assembly of a new energy vehicle is received, first torque data of the permanent magnet synchronous motor are obtained, a speed interval of the new energy vehicle is judged according to the first torque data, a first solution corresponding to the speed interval is obtained according to the speed interval, and the first solution is sent to a power battery matched with the permanent magnet synchronous motor, so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution. By adopting the arrangement mode, the working current output by the power battery to the permanent magnet synchronous motor can be accurately obtained, and the counter-dragging moment generated by the permanent magnet synchronous motor when the new energy vehicle slides is further reduced.
Example 4
The present embodiment provides a control system of a permanent magnet synchronous motor based on the above embodiment, including: the system comprises a control assembly, a monitoring module and a zero torque control module of the new energy vehicle.
The control assembly of the new energy vehicle is configured to: and receiving a zero torque control instruction input by a user, and sending zero torque control information of the permanent magnet synchronous motor to the zero torque control module according to the zero torque control instruction input by the user.
The monitoring module is configured to: and monitoring the rotating speed information of the permanent magnet synchronous motor, and sending the rotating speed information to the zero torque control module through a bus.
The zero torque control module is configured to:
and receiving a zero torque control instruction, responding to the zero torque control instruction, receiving the rotating speed information sent by the monitoring module, acquiring a first solution stored in a local memory according to the rotating speed information, and sending the first solution to the power battery.
Specifically, when receiving zero torque control information of the permanent magnet synchronous motor sent by the control assembly of the new energy vehicle, the monitoring module monitors the rotating speed of the permanent magnet synchronous motor, generates rotating speed data according to the rotating speed, sends the rotating speed data to the zero torque control module through the bus, and generates predicted rotating speed data according to the rotating speed data and historical rotating speed data stored in the local memory.
Further, the monitoring module is also used for monitoring the torque of the permanent magnet synchronous motor.
Specifically, when receiving zero torque control information of the permanent magnet synchronous motor sent by the control assembly of the new energy vehicle, the monitoring module monitors torque of the permanent magnet synchronous motor, generates torque data according to the torque, sends the torque data to the zero torque control module through the bus, and generates predicted torque data according to the torque data and historical torque data stored in the local memory.
Example 5
The embodiment also provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize any one of the methods.
In some embodiments, the computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash memory, magnetic surface memory, optical disk, or CD-ROM; but may be a variety of devices including one or any combination of the above memories. The computer may be a variety of computing devices including smart terminals and servers.
In the foregoing embodiments of the present disclosure, the descriptions of the various embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable non-volatile storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a non-volatile storage medium, including several instructions to cause a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods of the various embodiments of the present disclosure. And the aforementioned nonvolatile storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present disclosure and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present disclosure and are intended to be comprehended within the scope of the present disclosure.
Claims (7)
1. The control method of the permanent magnet synchronous motor is used for the new energy vehicle and is characterized by comprising the following steps of:
receiving zero torque control information of a permanent magnet synchronous motor sent by a control assembly of a new energy vehicle;
responding to the zero torque control information, acquiring a first solution stored in a local memory, and sending the first solution to a power battery matched with the permanent magnet synchronous motor so that the power battery outputs working current to the permanent magnet synchronous motor according to the first solution;
after the zero torque control is finished, updating the first solution according to the real-time torque data;
the method for updating the first solution according to the real-time torque data comprises the following steps:
according to the real-time torque data and the historical torque data stored in the local memory, predicting by using a moving weighted average method to obtain predicted torque;
generating a new first solution from the predicted torque;
replacing the first solution stored in the local memory with a new first solution;
and determining the effect of the current zero torque control according to the monitored rotating speed change data during the zero torque control, and adjusting the weight of the real-time torque data when the moving weighted average method is predicted according to the effect of the current zero torque control.
2. The method of controlling a permanent magnet synchronous motor according to claim 1, further comprising, before the obtaining the first solution stored in the local memory:
first rotational speed data is acquired, and a first solution stored in a local memory is acquired according to the first rotational speed data.
3. The method for controlling a permanent magnet synchronous motor according to claim 2, wherein the method for acquiring the first rotational speed data and acquiring the first solution stored in the local memory based on the rotational speed data comprises the steps of:
responding to the zero torque control information, and acquiring first rotation speed data;
judging a speed interval of the new energy vehicle according to the first rotational speed data;
and acquiring a first solution corresponding to the speed interval according to the speed interval.
4. A control method of a permanent magnet synchronous motor according to claim 3, characterized in that the real-time torque data updates the first solution of the corresponding speed interval according to the speed interval.
5. The control system of the permanent magnet synchronous motor is characterized by comprising a control assembly of a new energy vehicle, a monitoring module and a zero torque control module;
the control assembly of the new energy vehicle is configured to:
receiving a zero torque control instruction input by a user, and sending zero torque control information of the permanent magnet synchronous motor to a zero torque control module according to the zero torque control instruction input by the user;
the monitoring module is configured to:
monitoring the rotating speed information of the permanent magnet synchronous motor and sending the rotating speed information to the zero torque control module;
monitoring real-time torque data during zero torque control and transmitting the real-time torque data to the zero torque control module;
the zero torque control module is configured to:
receiving the zero torque control instruction, responding to the zero torque control instruction, receiving the rotating speed information sent by the monitoring module, acquiring a first solution stored in a local memory according to the rotating speed information, and sending the first solution to a power battery;
receiving the real-time torque data, and predicting by using a moving weighted average method according to the real-time torque data and the historical torque data stored in the local memory to obtain predicted torque;
generating a new first solution from the predicted torque;
replacing the first solution stored in the local memory with a new first solution;
according to the monitored rotational speed variation data during zero torque control;
determining the effect of the zero torque control;
according to the effect of the zero torque control;
and adjusting the weight of the real-time torque data when the moving weighted average method predicts.
6. The control system of a permanent magnet synchronous motor according to claim 5, wherein the monitoring module is further configured to monitor torque of the permanent magnet synchronous motor.
7. A computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor executing the computer program to implement the method of any of claims 1-4.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549631A (en) * | 2009-05-18 | 2009-10-07 | 奇瑞汽车股份有限公司 | Power system of simple electric vehicle operation method thereof |
| WO2018011483A1 (en) * | 2016-07-13 | 2018-01-18 | Renault Sas | Method for controlling the members of a hybrid transmission for automotive vehicle |
| CN108574429A (en) * | 2018-03-19 | 2018-09-25 | 江苏大学 | A kind of brshless DC motor wide speed regulating range low torque ripple suppressing method |
| CN109572433A (en) * | 2018-09-25 | 2019-04-05 | 王彩红 | A kind of control guard method when electric vehicle neutral position sliding |
| CN112693327A (en) * | 2021-01-21 | 2021-04-23 | 中国重汽集团济南动力有限公司 | New energy permanent magnet vehicle control subsystem and method for reducing non-working loss and vehicle |
| CN112829737A (en) * | 2020-05-22 | 2021-05-25 | 博雷顿科技有限公司 | Power control device of plug-in hybrid electric vehicle |
| CN113270976A (en) * | 2020-01-30 | 2021-08-17 | 通用汽车环球科技运作有限责任公司 | Electric powertrain with rotary electric machine and position sensor to controller interface |
| CN113431721A (en) * | 2021-07-06 | 2021-09-24 | 山东元齐新动力科技有限公司 | Range extender cold start control method, vehicle control unit, system and electric vehicle |
| KR20210131700A (en) * | 2020-04-24 | 2021-11-03 | 현대자동차주식회사 | Backlash Control Method According to Motor Split Control and Vehicle Using the Same |
| CN113992102A (en) * | 2021-09-10 | 2022-01-28 | 岚图汽车科技有限公司 | Method and device for controlling torque of permanent magnet synchronous motor, medium and electronic equipment |
| CN114123917A (en) * | 2021-10-25 | 2022-03-01 | 东风汽车集团股份有限公司 | Motor zero-torque control method and related equipment |
| CN115139816A (en) * | 2022-06-28 | 2022-10-04 | 东风汽车集团股份有限公司 | Power motor assembly, power motor control method, device and equipment |
| CN115800858A (en) * | 2022-11-23 | 2023-03-14 | 宜兴兴迈电子科技有限公司 | Self-adaptive control method and system of alternating current asynchronous motor |
| CN116620045A (en) * | 2023-06-28 | 2023-08-22 | 重庆长安汽车股份有限公司 | Motor torque control method and device and vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8547045B2 (en) * | 2011-02-23 | 2013-10-01 | Deere & Company | Method and system controlling an electrical motor with temperature compensation |
| KR102176580B1 (en) * | 2013-06-24 | 2020-11-09 | 삼성전자주식회사 | Method and Apparatus for compensating friction torque of permanent magnet synchronous motor |
| US9199635B2 (en) * | 2013-08-30 | 2015-12-01 | Ford Global Technologies, Llc | Method and system to exit from a coast-down mode |
| US9755567B2 (en) * | 2015-11-04 | 2017-09-05 | GM Global Technology Operations LLC | Determination of permanent magnetic flux in an electric machine |
-
2023
- 2023-11-06 CN CN202311461478.XA patent/CN117183765B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549631A (en) * | 2009-05-18 | 2009-10-07 | 奇瑞汽车股份有限公司 | Power system of simple electric vehicle operation method thereof |
| WO2018011483A1 (en) * | 2016-07-13 | 2018-01-18 | Renault Sas | Method for controlling the members of a hybrid transmission for automotive vehicle |
| CN108574429A (en) * | 2018-03-19 | 2018-09-25 | 江苏大学 | A kind of brshless DC motor wide speed regulating range low torque ripple suppressing method |
| CN109572433A (en) * | 2018-09-25 | 2019-04-05 | 王彩红 | A kind of control guard method when electric vehicle neutral position sliding |
| CN113270976A (en) * | 2020-01-30 | 2021-08-17 | 通用汽车环球科技运作有限责任公司 | Electric powertrain with rotary electric machine and position sensor to controller interface |
| KR20210131700A (en) * | 2020-04-24 | 2021-11-03 | 현대자동차주식회사 | Backlash Control Method According to Motor Split Control and Vehicle Using the Same |
| CN112829737A (en) * | 2020-05-22 | 2021-05-25 | 博雷顿科技有限公司 | Power control device of plug-in hybrid electric vehicle |
| CN112693327A (en) * | 2021-01-21 | 2021-04-23 | 中国重汽集团济南动力有限公司 | New energy permanent magnet vehicle control subsystem and method for reducing non-working loss and vehicle |
| CN113431721A (en) * | 2021-07-06 | 2021-09-24 | 山东元齐新动力科技有限公司 | Range extender cold start control method, vehicle control unit, system and electric vehicle |
| CN113992102A (en) * | 2021-09-10 | 2022-01-28 | 岚图汽车科技有限公司 | Method and device for controlling torque of permanent magnet synchronous motor, medium and electronic equipment |
| CN114123917A (en) * | 2021-10-25 | 2022-03-01 | 东风汽车集团股份有限公司 | Motor zero-torque control method and related equipment |
| CN115139816A (en) * | 2022-06-28 | 2022-10-04 | 东风汽车集团股份有限公司 | Power motor assembly, power motor control method, device and equipment |
| CN115800858A (en) * | 2022-11-23 | 2023-03-14 | 宜兴兴迈电子科技有限公司 | Self-adaptive control method and system of alternating current asynchronous motor |
| CN116620045A (en) * | 2023-06-28 | 2023-08-22 | 重庆长安汽车股份有限公司 | Motor torque control method and device and vehicle |
Non-Patent Citations (4)
| Title |
|---|
| 一种新的永磁同步电机直接转矩控制方法;张春梅;刘贺平;陈书锦;汪芳君;;***仿真学报(09);全文 * |
| 基于纯电动车辆动力***阻力特性的底盘测功机阻力设置研究;王金桥;靳慧鲁;王瑛;汪跃中;王新树;;汽车科技(02);全文 * |
| 混合动力车用电机快速响应弱磁算法研究;刘晓红;张幽彤;黄文卿;张兴春;;汽车工程(04);全文 * |
| 车用永磁同步电机控制***研究与仿真分析;刘亚成;周广明;李慎龙;唐沛;;机电技术(05);全文 * |
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