CN118232786A - Active speed increasing method and system for electric compressor controller - Google Patents
Active speed increasing method and system for electric compressor controller Download PDFInfo
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- CN118232786A CN118232786A CN202410426016.2A CN202410426016A CN118232786A CN 118232786 A CN118232786 A CN 118232786A CN 202410426016 A CN202410426016 A CN 202410426016A CN 118232786 A CN118232786 A CN 118232786A
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- 238000004590 computer program Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
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- 238000004378 air conditioning Methods 0.000 description 1
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Abstract
The invention discloses an active speed increasing method of an electric compressor controller, which is executed by the controller and comprises the following steps: judging whether the current motor is in a low-speed stage or not according to the received rotating speed command and the rotating speed comparison of a preset threshold value; confirming the current running load of the whole vehicle in response to the current motor being in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic; when the current load of the whole vehicle is larger than a preset current threshold value, controlling the motor to run to a preset threshold value rotating speed, and not responding to the whole vehicle instruction; in response to the fact that the rotating speed is maintained after the rotating speed reaches a preset threshold value, meanwhile, phase current is judged, if the phase current is smaller than a preset current threshold value, an original whole vehicle rotating speed instruction is restored, and whether active speed rising is needed or not is judged according to the whole vehicle rotating speed instruction and the phase current of a controller; the operation of the compressor is in a region with larger load capacity, so that the phenomenon that the lower the rotating speed is, the weaker the capacity is caused by adopting a large load deceleration protection mode is avoided, and the compressor is stopped; the invention actively increases the speed to enable the compressor to be in a strong load capacity area; even if the external load is not regulated timely, the device can stably operate in a short time.
Description
Technical Field
The invention relates to an active speed increasing method and an active speed increasing system for an electric compressor controller, and belongs to the technical field of new energy electric compressors.
Background
With the development of the automobile industry, new energy automobiles have taken up a certain market share; the heat pump compressor is used as a main component of an air conditioning system, and is widely used for refrigerating in summer, charging and cooling the whole vehicle and the like. When the compressor is defrosted and defogged or the whole vehicle is in an idle state, the energy-saving requirement is considered, and the rotating speed of the compressor is limited; so that the compressor is operated at a low speed for a long time; when the compressor runs at low speed, the motor output capacity is limited, and when the motor output capacity is close to or exceeds the motor output capacity limit, the motor cannot maintain stable rotation speed, and a point current out-of-control state occurs, so that the compressor is protected and cannot work normally for refrigeration; the common protection mode is to actively reduce the speed after the arrival of the load capacity is detected; the regulation is performed by the rotation speed and the external condensing fan.
At present, a common control strategy is to perform deceleration operation at a low speed, the mode depends on the adjusting effect of a fan of the whole vehicle, and if the fan is adjusted in time, the load of the compressor is lowered, so that the operation can be normally kept; this way depends on the overall vehicle regulation effect, if not in place; reducing the speed to the minimum rotation speed; the load is still large at this time; the compressor may be caused to stop protecting.
Disclosure of Invention
Aiming at the protection defect of the shutdown of the existing low-speed load, the invention actively increases a certain rotating speed when the load is detected to be large; the method and the system have the advantages that the compressor is operated in a region with relatively high capacity, and even if an external fan cannot be adjusted in time, the optimization capacity can be operated to a certain extent, so that the maximum operation of the compressor is ensured, and the method and the system for actively accelerating the electric compressor controller are provided.
First aspect:
An active speed increasing method of an electric compressor controller, which is executed by the controller and comprises the following steps:
judging whether the current motor is in a low-speed stage or not according to the received rotating speed command and the rotating speed comparison of a preset threshold value;
Confirming the current running load of the whole vehicle in response to the current motor being in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic;
when the current load of the whole vehicle is larger than a preset current threshold value, controlling the motor to run to a preset threshold value rotating speed, and not responding to the whole vehicle instruction;
And after the rotating speed reaches a preset threshold value, maintaining the rotating speed, judging phase current at the same time, and if the phase current is smaller than a preset current threshold value, recovering an original whole vehicle rotating speed instruction.
Further, the step-up logic is configured to determine whether the current load of the whole vehicle is greater than a preset current threshold value, including:
Collecting phase current data;
When the phase current data is larger than a preset current threshold, the controller controls the motor to actively run to the threshold rotating speed.
Further, the collected phase current data is collected through a sampling circuit.
Further, the sampling circuit includes: the main chip CPU reads a voltage difference value generated by the IGBT current through an analog input pin, and converts the acquired voltage difference value into a real-time phase current value through the voltage operation and discharge circuit.
Further, the speed increasing logic is applied to low rotating speed and high load of the motor.
Further, the current threshold may be a bus current or a phase current.
Second aspect:
An electric compressor controller active speed increasing system comprising:
The first judging module is used for judging whether the current motor is in a low-speed stage or not according to the received rotating speed instruction and the preset threshold rotating speed comparison;
The second judging module is used for confirming the current running load of the whole vehicle in response to the fact that the current motor is in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic;
The first control module is used for controlling the motor to run to a preset threshold rotating speed when the current load of the whole vehicle is larger than a preset current threshold value, and the whole vehicle instruction is not responded;
And the second control module is used for restoring the original whole vehicle rotating speed instruction after the preset threshold rotating speed is reached.
Third aspect:
a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the motor-compressor controller active ramp-up method of the first aspect.
Fourth aspect:
a computer device, comprising:
a memory for storing a computer program;
And the processor is used for executing the computer program to realize the steps of the active speed increasing method of the electric compressor controller.
Compared with the prior art, the invention has the beneficial effects that:
According to the whole vehicle rotating speed instruction and the controller phase current, judging whether an active speed rise is needed or not; the operation of the compressor is in a region with larger load capacity, so that the phenomenon that the lower the rotating speed is, the weaker the capacity is caused by adopting a large load deceleration protection mode is avoided, and the compressor is stopped;
the invention actively increases the speed to enable the compressor to be in a strong load capacity area; even if the external load is not regulated timely, the device can stably operate in a short time.
Drawings
Fig. 1 is a flow chart of the present invention.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
The invention discloses an active speed increasing method of an electric compressor controller, as shown in fig. 1, which is executed by the controller and comprises the following steps:
judging whether the current motor is in a low-speed stage or not according to the received rotating speed command and the rotating speed comparison of a preset threshold value;
Confirming the current running load of the whole vehicle in response to the current motor being in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic;
when the current load of the whole vehicle is larger than a preset current threshold value, controlling the motor to run to a preset threshold value rotating speed, and not responding to the whole vehicle instruction;
And after the rotating speed reaches a preset threshold value, maintaining the rotating speed, judging phase current at the same time, and if the phase current is smaller than a preset current threshold value, recovering an original whole vehicle rotating speed instruction.
In one embodiment, the determining, by the speed increasing logic, whether the current load of the whole vehicle is greater than a preset current threshold value includes:
Collecting phase current data;
When the phase current data is larger than a preset current threshold, the controller controls the motor to actively run to the threshold rotating speed.
In one embodiment, the acquisition phase current data is acquired by a sampling circuit comprising: the main chip CPU reads a voltage difference value generated by the IGBT current through an analog input pin, and converts the acquired voltage difference value into a real-time phase current value through the voltage operation and discharge circuit.
In one embodiment, all threshold values can be freely set according to the size of the real vehicle system, the current threshold value can be bus current or phase current, but the phase current can change correspondingly with load faster, and the controller is protected more rapidly when the speed increasing logic is not active under abnormal conditions.
The method comprises the following specific steps:
step 1, receiving a compressor operation instruction, sending the operation instruction inside a controller, and controlling the operation of a motor by the controller;
step 2, the controller receives a rotating speed instruction; comparing the rotating speed command with a set threshold rotating speed; whether the current motor is in a low-speed stage or not is judged;
Step 3, judging that the current motor is in a low-speed operation stage according to the step 2, and confirming the current load of the whole vehicle operation:
confirming whether to trigger a speed-up logic according to the phase current acquired by the hardware circuit, namely: when the phase current collected by the hardware circuit is larger than the set current threshold value, the controller controls the motor to run to the threshold value rotating speed, and the motor does not respond to the whole vehicle command (the whole vehicle 1000, the threshold value 3000 and the normal running 1000 are assumed, but after the logic is triggered, the rotating speed actively rises to 3000, and the running requirement of 1000 is no longer heard);
Step 4, after the speed rise is detected, the phase current becomes small due to the change of an external load; the original whole vehicle rotating speed instruction of the recovery value (load is reduced after current is reduced, and the recovery value is recovered to the instruction rotating speed of the whole vehicle in a low-speed operation range);
Examples
An electric compressor controller active speed increasing system comprising:
The first judging module is used for judging whether the current motor is in a low-speed stage or not according to the received rotating speed instruction and the preset threshold rotating speed comparison;
The second judging module is used for confirming the current running load of the whole vehicle in response to the fact that the current motor is in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic;
The first control module is used for controlling the motor to run to a preset threshold rotating speed when the current load of the whole vehicle is larger than a preset current threshold value, and the whole vehicle instruction is not responded;
And the second control module is used for responding to the preset threshold rotating speed, maintaining the rotating speed, judging the phase current at the same time, and recovering the original whole vehicle rotating speed instruction if the phase current is smaller than the preset current threshold.
Examples
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the motor-driven compressor controller active ramp-up method described in embodiment 1.
Examples
A computer device, comprising:
a memory for storing a computer program;
A processor for executing the computer program to implement the steps of the motor-driven compressor controller active ramp-up method described in embodiment 1.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (9)
1. An active speed increasing method of an electric compressor controller, executed by the controller, comprising:
judging whether the current motor is in a low-speed stage or not according to the received rotating speed command and the rotating speed comparison of a preset threshold value;
Confirming the current running load of the whole vehicle in response to the current motor being in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic;
when the current load of the whole vehicle is larger than a preset current threshold value, controlling the motor to run to a preset threshold value rotating speed, and not responding to the whole vehicle instruction;
And after the rotating speed reaches a preset threshold value, maintaining the rotating speed, judging phase current at the same time, and if the phase current is smaller than a preset current threshold value, recovering an original whole vehicle rotating speed instruction.
2. The method of claim 1, wherein determining, by the ramp-up logic, whether the current load of the whole vehicle is greater than a preset current threshold comprises:
Collecting phase current data;
When the phase current data is larger than a preset current threshold, the controller controls the motor to actively run to the threshold rotating speed.
3. The method of claim 2, wherein the collected phase current data is collected by a sampling circuit.
4. The method of actively ramping up a motor-driven compressor controller according to claim 3, wherein said sampling circuit comprises: the main chip CPU reads a voltage difference value generated by the IGBT current through an analog input pin, and converts the acquired voltage difference value into a real-time phase current value through the voltage operation and discharge circuit.
5. The method of claim 1, wherein the speed increasing logic is applied to a low speed, high load motor.
6. The method of claim 1, wherein the current threshold is a bus current or a phase current.
7. An active speed increasing system of an electric compressor controller, comprising:
The first judging module is used for judging whether the current motor is in a low-speed stage or not according to the received rotating speed instruction and the preset threshold rotating speed comparison;
The second judging module is used for confirming the current running load of the whole vehicle in response to the fact that the current motor is in a low-speed running stage, and judging whether the current load of the whole vehicle is larger than a preset current threshold value or not through a speed increasing logic;
The first control module is used for controlling the motor to run to a preset threshold rotating speed when the current load of the whole vehicle is larger than a preset current threshold value, and the whole vehicle instruction is not responded;
And the second control module is used for restoring the original whole vehicle rotating speed instruction after the preset threshold rotating speed is reached.
8. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the motor-compressor controller active speed increasing method of any one of claims 1-6.
9. A computer device, comprising:
a memory for storing a computer program;
A processor for executing the computer program to implement the steps of the motor-compressor controller active ramp-up method of any one of claims 1-6.
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| Publication Number | Publication Date |
|---|---|
| CN118232786A true CN118232786A (en) | 2024-06-21 |
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