CN116412027A - Range extender generation power following control method and device, electronic equipment and medium - Google Patents
Range extender generation power following control method and device, electronic equipment and medium Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Control Of Eletrric Generators (AREA)
Abstract
The invention relates to a range extender generated power following control method, a device, electronic equipment and a medium, wherein the method comprises the following steps: acquiring theoretical power generation current and actual power generation current of a power generation unit, and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current; if all the sensors are in normal working conditions, calculating the actual power generation power of the generator at the target moment; calculating a first response time required by the generator set to respond to the target generated power at a first moment based on a pre-constructed response time curve; calculating an influence factor of the generator set response target power to the actual power of the generator at the target moment based on the first response time, and calculating the maximum value of the generator set response target power at the target moment based on the influence factor; and judging the following normality of the generating power of the generator set based on the maximum value of the generating power of the generator set at the target moment and the actual generating power. The invention improves the monitoring and identification of the following performance of the generated power.
Description
Technical Field
The invention relates to the technical field of range extender automobile control, in particular to a range extender generated power following control method, a range extender generated power following control device, electronic equipment and a medium.
Background
The range extender is an important component form of the electric automobile, and the range extender can not respond to the target generated power sent to the whole automobile controller because the range extender can have mechanical, hardware or software faults and the like. Therefore, the whole vehicle controller must monitor the normal performance of the real-time generated power of the range extender, if the whole vehicle controller cannot accurately monitor the power of the generator of the range extender, the whole vehicle controller cannot coordinate and work normally between the motor drive and the energy management of the high-voltage system, so that the high-voltage system works abnormally, and the power battery is overcharged or overdischarged.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a method, an apparatus, an electronic device and a medium for controlling the following of the generated power of a range extender, so as to solve the problem that the monitoring and identifying accuracy of the following of the target generated power is low, resulting in abnormal operation of a high-voltage system.
In order to solve the above problems, in a first aspect, the present invention provides a range extender generated power following control method, including:
acquiring theoretical power generation current and actual power generation current of a power generation unit, and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current;
if all the sensors are in the normal working condition, calculating the actual power generation power of the generator at the target moment;
calculating first response time required by the generator set to respond to target generated power at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;
calculating an influence factor of the generator set response target power to the actual power of the generator at the target moment based on the first response time, and calculating the maximum value of the generator set response target power at the target moment based on the influence factor;
and judging the following normality of the generating power of the generator set based on the maximum value of the generating power of the generator set at the target moment in response to the target generating power and the actual generating power of the generator at the target moment.
Further, the obtaining the theoretical generating current of the generating set includes:
the theoretical power generation current of the generator set is calculated according to the actual rotating speed and the actual torque of the generator and the efficiency of the generator, and is as follows:
wherein I (k) theory For the theoretical current of the generator set at the target moment, U is the total voltage of the power battery, and w (k) act For the actual rotational speed of the generator set at the target moment, T (k) act For the actual torque of the generator set at the target moment,
and k is the target moment for the generator efficiency of the generator set at the actual rotating speed and the actual torque.
Further, the determining the working condition of each sensor based on the theoretical generated current and the actual generated current includes:
acquiring actual power generation current of the generator set at a target moment, and calculating an absolute value of a difference value between the actual power generation current and the theoretical power generation current;
calculating the normal coefficient of each sensor of the generator set at the target moment according to the absolute value of the difference value between the actual generating current and the theoretical generating current of the generator set at the target moment:
wherein, beta (K) is the normal coefficient of each sensor of the generator set at the target moment, delta I (K) 1 For the absolute value of the difference value between the actual power generation current and the theoretical power generation current of the generator set at the target moment, I 1 A normal threshold value for the difference between the actual generated current and the theoretical generated current;
and judging the normality of the generator rotating speed sensor, the torque sensor and the current sensor according to the normality coefficient of each sensor of the generator set at the target moment.
Further, the pre-constructed response time curve is:
t(p)＝α*p+b
wherein t (p) is the response time required for the generator power of the generator set to change to p, p is the generator power of the generator set, alpha is the first generator set response time calculation coefficient, and b is the second generator set response time calculation coefficient;
the first response time required by the generator set to respond to the target generated power at the first moment is calculated based on a pre-constructed response time curve and is as follows:
t(p(j) target )＝α*p(j) target +b
wherein t (p (j)) target ) For a first response time, p (j), required for the generator set to respond to the target generated power at a first time target And j is the first moment, and is the target power generation of the generator set at the first moment.
Further, the influence factor of the response target power of the generator set on the actual power of the generator at the target moment calculated based on the first response time is as follows:
wherein, gamma (j, k) is an influence factor of the actual generated power of the generating set at the first moment on the target moment in response to the target generated power, and delta t is the time difference between the first moment and the target moment;
the maximum value of the response target power of the generator set at the target moment based on the influence factor is as follows:
wherein P (k) actmin Responding the minimum value of the target generating power for the generating set at the target moment; p (k) actmmax Responding the maximum value of the target generating power for the generator set at the target moment.
Further, the determining the normality of the generator power of the generator set based on the maximum value of the response target power of the generator set at the target time and the actual power of the generator at the target time includes:
the absolute value of the difference value between the maximum value and the minimum value of the response target power of the generator set at the target moment and the actual power is calculated as follows:
wherein ΔP (k) actmax For the generator set to respond to the absolute value of the difference between the maximum value of the target generated power and the actual generated power at the target moment, delta P (k) actmin For the generator set to respond to the absolute value of the difference between the minimum value of the target generated power and the actual generated power at the target moment, P (k) act The actual power generated by the generator at the target moment is used as the power generated by the generator;
calculating the average value of the absolute value after accumulation;
if the first accumulated average value of the absolute value of the difference value of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is not greater than the accumulated average value normal threshold value, and the second accumulated average value of the absolute value of the difference value of the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is not greater than the accumulated average value normal threshold value, judging that the generator set normally follows the target power generation power;
if the first accumulated average value of the absolute value of the difference value of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than the accumulated average value normal threshold value, or the second accumulated average value of the absolute value of the difference value of the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than the accumulated average value normal threshold value, judging that the generator set cannot normally follow the target power generation power.
Further, the method further comprises:
and if the generator set is judged to be unable to normally follow the target power, the generator set is turned off to prohibit the generator from working.
In a second aspect, the present invention further provides a range extender generated power following control device, including:
the first judging module is used for acquiring theoretical power generation current and actual power generation current of the power generation unit and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current;
the first calculation module is used for calculating the actual power generation of the generator at the target moment if all the sensors are in the normal working condition;
the second calculation module is used for calculating first response time required by the generator set to respond to the target generated power at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;
the third calculation module is used for calculating an influence factor of the response target power of the generator set on the actual power of the generator at the target moment based on the first response time, and calculating the maximum value of the response target power of the generator set at the target moment based on the influence factor;
and the second judging module is used for judging the following normality of the generating power of the generator set based on the maximum value of the response target generating power of the generator set at the target moment and the actual generating power of the generator at the target moment.
In a third aspect, the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps in the above-mentioned range extender generated power following control method when executing the computer program.
In a fourth aspect, the present invention also provides a computer storage medium storing a computer program which when executed by a processor implements the steps of the above-described range extender generated power following control method.
The beneficial effects of adopting the embodiment are as follows:
according to the invention, the working condition of each sensor is judged according to the theoretical power generation current and the actual power generation current of the generator set, so that the problem that the power of the generator cannot be normally identified due to data errors collected among the sensors is avoided; and then, calculating the time for responding to the power of each target generator according to the characteristic of the response time of the generator set, and avoiding single interference and misjudgment in the monitoring process based on the maximum value of the response target power of the generator set at the target moment and the actual power of the generator at the target moment, thereby greatly improving the instantaneity and the accuracy of monitoring the starting power of the range extender, judging whether the high-voltage system works abnormally in time, avoiding the fault of overcharging or overdischarging of the power battery, and improving the safety of the vehicle.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of a range extender generated power following control method according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a range extender power follower control device according to the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to the present invention.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying 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. Furthermore, the meaning of "a plurality of" means two or more, unless specifically defined otherwise. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1, fig. 1 is a flow chart of an embodiment of a range extender generated power following control method provided by the present invention, and a specific embodiment of the present invention discloses a range extender generated power following control method, which includes:
step S101: acquiring theoretical power generation current and actual power generation current of a power generation unit, and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current;
step S102: if all the sensors are in the normal working condition, calculating the actual power generation power of the generator at the target moment;
step S103: calculating first response time required by the generator set to respond to the target generated power at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;
step S104: calculating an influence factor of the generator set response target power to the actual power of the generator at the target moment based on the first response time, and calculating the maximum value of the generator set response target power at the target moment based on the influence factor;
step S105: and judging the following normality of the generating power of the generator set based on the maximum value of the generating power of the generator set at the target moment in response to the target generating power and the actual generating power of the generator at the target moment.
According to the invention, the working condition of each sensor is judged according to the theoretical power generation current and the actual power generation current of the generator set, so that the problem that the power of the generator cannot be normally identified due to data errors collected among the sensors is avoided; and then, calculating the time for responding to the power of each target generator according to the characteristic of the response time of the generator set, and avoiding single interference and misjudgment in the monitoring process based on the maximum value of the response target power of the generator set at the target moment and the actual power of the generator at the target moment, thereby greatly improving the instantaneity and the accuracy of monitoring the starting power of the range extender, judging whether the high-voltage system works abnormally in time, avoiding the fault of overcharging or overdischarging of the power battery, and improving the safety of the vehicle.
In one embodiment of the invention, obtaining a theoretical generated current of a generator set includes:
the theoretical power generation current of the generator set is calculated according to the actual rotating speed and the actual torque of the generator and the efficiency of the generator, and is as follows:
wherein I (k) theory For the theoretical current of the generator set at the target moment, U is the total voltage of the power battery, and w (k) act For the actual rotational speed of the generator set at the target moment, T (k) act For the actual torque of the generator set at the target moment,
and k is the target moment for the generator efficiency of the generator set at the actual rotating speed and the actual torque.
It can be understood that the actual rotation speed of the generator set at the target moment can be obtained through a rotation speed sensor, the actual torque of the generator set at the target moment can be obtained through a torque sensor, and the generator efficiency of the generator set at the actual rotation speed and the actual torque can be obtained through a bench test.
In one embodiment of the present invention, determining the operating condition of each sensor based on the theoretical generated current and the actual generated current includes:
acquiring actual power generation current of the generator set at a target moment, and calculating an absolute value of a difference value between the actual power generation current and the theoretical power generation current;
calculating the normal coefficient of each sensor of the generator set at the target moment according to the absolute value of the difference value between the actual generating current and the theoretical generating current of the generator set at the target moment:
wherein, beta (K) is the normal coefficient of each sensor of the generator set at the target moment, delta I (K) 1 For the absolute value of the difference value between the actual power generation current and the theoretical power generation current of the generator set at the target moment, I 1 A normal threshold value for the difference between the actual generated current and the theoretical generated current;
and judging the normality of the generator rotating speed sensor, the torque sensor and the current sensor according to the normality coefficient of each sensor of the generator set at the target moment.
It can be understood that the absolute value of the difference between the actual generated current and the theoretical generated current of the generator set at the target moment is:
ΔI(k) 1 ＝|I(k) theory -I(k) act |
I(k) act for the actual current of the generator set at the target moment, ΔI (K) 1 The absolute value of the difference value between the actual power generation current and the theoretical power generation current of the power generation unit at the target moment.
And the normal coefficients of the generator rotating speed sensor, the torque sensor and the current sensor can be calculated according to the absolute value, and then the correctness of the collected data of the generator rotating speed sensor, the torque sensor and the current sensor at the moment is judged through the normal coefficients of the sensors.
Specifically, firstly, calculating the time percentage of normal operation of the sensor in the whole time range of the generator set:
if Deltat is greater than or equal to Deltat 1 And if the time percentage of the normal operation of the sensor in the whole time range of the generator set is not less than the threshold value of the time percentage of the normal operation of the sensor in the whole time range of the generator set, the rotating speed sensor, the torque sensor and the current sensor of the generator set are all normal.
If each sensor is in a normal working condition, calculating the actual power generated by the generator at the target moment:
P(k) act ＝U*I(k) act
wherein P (k) act The actual power generated by the generator set at the target moment.
If delta t<Δt 1 The time percentage of the normal operation of the sensor in the whole time range of the generator set is smaller than the threshold value of the time percentage of the normal operation of the sensor in the whole time range of the generator set, so that faults exist in the rotating speed sensor, the torque sensor and the current sensor of the generator set, the generator set cannot normally operate, and the generator set cannot normally follow the target generating power. At the moment, the power generation group is shut down, the power generator is forbidden, and safety accidents of the high-voltage system caused by abnormal operation of the power generator are avoided.
In one embodiment of the invention, the pre-constructed response time profile is:
t(p)＝α*p+b
wherein t (p) is the response time required for the generator power of the generator set to change to p, p is the generator power of the generator set, alpha is the first generator set response time calculation coefficient, and b is the second generator set response time calculation coefficient;
the first response time required by the generator set to respond to the target generated power at the first moment is calculated based on a pre-constructed response time curve and is as follows:
t(p(j) target )＝α*p(j) target +b
wherein t (p (j)) target ) For generating setFirst response time, p (j), required for responding to target generated power at first time target And j is the first moment, and is the target power generation of the generator set at the first moment.
It will be appreciated that the pre-constructed response time profile may be calculated from bench tests using the characteristics of the genset. Specifically, the rack equipment is utilized to directly jump the target generated power from 0 to i by delta p and record the actual t required by the actual generated power of the generator set to be i by delta p i . And n x Δp is equal to the maximum power P of the generator when i increases from 1 to n% max And obtaining a time curve required by the power response of the generator set by using a least square method. Further, according to (i Δp, t i ) The least square method is used to know that:
then, a first response time required by the generator set to respond to the target generated power at a first time is calculated in real time: t (p (j)) target )＝α*p(j) target +b。
In one embodiment of the invention, the influence factor of the response target generated power of the generator set on the actual generated power of the generator at the target moment is calculated based on the first response time, wherein the influence factor is as follows:
wherein, gamma (j, k) is an influence factor of the actual generated power of the generating set at the first moment on the target moment in response to the target generated power, and delta t is the time difference between the first moment and the target moment;
the maximum value of the response target generated power of the generator set at the target moment based on the influence factors is as follows:
wherein P (k) actmin Responding the minimum value of the target generating power for the generating set at the target moment; p (k) actmmax Responding the maximum value of the target generating power for the generator set at the target moment.
It may be appreciated that whether there is an influence on the actual generated power at the target time may be determined according to the first response time required by the generator set to respond to the target generated power at the first time, specifically, the determination may be performed according to an influence factor, and then the maximum value and the minimum value of the response target power at the target time may be calculated according to the influence factor of the actual generated power of the generator set to respond to the target generated power at the first time to respond to the target generated power at the target time.
In one embodiment of the present invention, determining the normality of the generator set generated power following based on the maximum value of the generator set response target generated power at the target time and the actual generated power of the generator at the target time includes:
the absolute value of the difference value between the maximum value and the minimum value of the response target power of the generator set at the target moment and the actual power is calculated as follows:
wherein ΔP (k) actmax For the generator set to respond to the absolute value of the difference between the maximum value of the target generated power and the actual generated power at the target moment, delta P (k) actmin For the generator set to respond to the absolute value of the difference between the minimum value of the target generated power and the actual generated power at the target moment, P (k) act The actual power generated by the generator at the target moment is used as the power generated by the generator;
calculating an average value after absolute value accumulation;
if the first accumulated average value of the absolute value of the difference value of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is not greater than the accumulated average value normal threshold value, and the second accumulated average value of the absolute value of the difference value of the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is not greater than the accumulated average value normal threshold value, judging that the generator set normally follows the target power generation power;
if the first accumulated average value of the absolute value of the difference value of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than the accumulated average value normal threshold value, or the second accumulated average value of the absolute value of the difference value of the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than the accumulated average value normal threshold value, judging that the generator set cannot normally follow the target power generation power.
It can be understood that the normality of the generator set generated power following can be determined according to the maximum value and the minimum value of the generator set in response to the target generated power at the target moment and the relation of the actual generated power relative to the magnitude.
Firstly, calculating the absolute value of the difference value between the maximum value and the minimum value of the response target generated power of the generating set at the moment K and the actual generated power:
and then judging whether the generator set normally follows the target generator power according to the average value of the accumulated absolute values:
wherein DeltaP actmax A first accumulated average value of absolute values of the difference values of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment; ΔP actmin A second accumulated average value of the absolute value of the difference value between the minimum value of the target power generation and the actual power generation of the power generation unit at the moment K;
if DeltaP actmax ≤ΔP act And DeltaP actmin ≤ΔP act I.e. the first cumulative level of the maximum value of the target power generation power and the absolute value of the difference between the actual power generation power of the generator set at the target momentThe average value is not larger than the cumulative average value normal threshold value, and the second cumulative average value of the absolute value of the difference value between the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is not larger than the cumulative average value normal threshold value, so that the generator set is judged to work normally and can normally follow the target power generation power.
If DeltaP actmax ＞ΔP act Or DeltaP actmin ≤ΔP act The method comprises the steps that a first accumulated average value of the absolute value of the difference value between the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than a normal accumulated average value threshold, or a second accumulated average value of the absolute value of the difference value between the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than a normal accumulated average value threshold, the generator set works abnormally and cannot normally follow the target power generation power, at the moment, the generator set is turned off, a generator is forbidden, and safety accidents of a high-voltage system caused by abnormal operation of the generator are avoided.
In order to better implement the range extender power following control method according to the embodiment of the present invention, referring to fig. 2 correspondingly, fig. 2 is a schematic structural diagram of an embodiment of the range extender power following control device provided by the present invention, where the embodiment of the present invention provides a range extender power following control device 200, including:
a first determining module 201, configured to obtain a theoretical power generation current and an actual power generation current of the power generation unit, and determine an operating condition of each sensor based on the theoretical power generation current and the actual power generation current;
a first calculation module 202, configured to calculate an actual power generated by the generator at a target moment if each sensor is in a normal working condition;
a second calculating module 203, configured to calculate a first response time required by the generator set to respond to the target generated power at a first time based on a pre-constructed response time curve, where the first time is a time before the target time;
a third calculation module 204, configured to calculate an influence factor of the generator set response target power to the actual power of the generator at the target moment based on the first response time, and calculate a maximum value of the generator set response target power at the target moment based on the influence factor;
the second determining module 205 is configured to determine the normality of the generated power of the generator set based on the maximum value of the generated power of the generator set at the target moment in response to the target and the actual generated power of the generator at the target moment.
What needs to be explained here is: the device 200 provided in the foregoing embodiments may implement the technical solutions described in the foregoing method embodiments, and the specific implementation principles of the foregoing modules or units may be referred to the corresponding content in the foregoing method embodiments, which is not described herein again.
Based on the above-mentioned range extender generating power following control method, the embodiment of the invention further provides an electronic device correspondingly, which comprises: a processor and a memory, and a computer program stored in the memory and executable on the processor; the processor, when executing the computer program, implements the steps in the range extender generation power following control method of each of the above embodiments.
A schematic structural diagram of an electronic device 300 suitable for use in implementing embodiments of the present invention is shown in fig. 3. The electronic device in the embodiment of the present invention may include, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a car-mounted terminal (e.g., car navigation terminal), etc., and a stationary terminal such as a digital TV, a desktop computer, etc. The electronic device shown in fig. 3 is only an example and should not be construed as limiting the functionality and scope of use of the embodiments of the invention.
An electronic device includes: a memory and a processor, where the processor may be referred to as a processing device 301 hereinafter, the memory may include at least one of a Read Only Memory (ROM) 302, a Random Access Memory (RAM) 303, and a storage device 308 hereinafter, as shown in detail below:
as shown in fig. 3, the electronic device 300 may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 301 that may perform various suitable actions and processes in accordance with a program stored in a Read Only Memory (ROM) 302 or a program loaded from a storage means 308 into a Random Access Memory (RAM) 303. In the RAM303, various programs and data required for the operation of the electronic apparatus 300 are also stored. The processing device 301, the ROM302, and the RAM303 are connected to each other via a bus 304. An input/output (I/O) interface 305 is also connected to bus 304.
In general, the following devices may be connected to the I/O interface 305: input devices 306 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; an output device 307 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 308 including, for example, magnetic tape, hard disk, etc.; and communication means 309. The communication means 309 may allow the electronic device 300 to communicate with other devices wirelessly or by wire to exchange data. While fig. 3 shows an electronic device 300 having various means, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead.
In particular, according to embodiments of the present invention, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a non-transitory computer readable medium, the computer program comprising program code for performing the method shown in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via a communication device 309, or installed from a storage device 308, or installed from a ROM 302. The above-described functions defined in the method of the embodiment of the present invention are performed when the computer program is executed by the processing means 301.
Based on the above-mentioned range extender generation power following control method, the embodiment of the present invention further provides a corresponding computer readable storage medium, where one or more programs are stored, and the one or more programs may be executed by one or more processors, so as to implement the steps in the range extender generation power following control method according to the above-mentioned embodiments.
Those skilled in the art will appreciate that all or part of the flow of the methods of the embodiments described above may be accomplished by way of a computer program to instruct associated hardware, where the program may be stored on a computer readable storage medium. Wherein the computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory, etc.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a range extender generated power follows control method which is characterized in that the method comprises the following steps:
acquiring theoretical power generation current and actual power generation current of a power generation unit, and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current;
if all the sensors are in normal working conditions, calculating the actual power generation power of the generator at the target moment;
calculating first response time required by the generator set to respond to target generated power at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;
calculating an influence factor of the generator set response target power to the actual power of the generator at the target moment based on the first response time, and calculating the maximum value of the generator set response target power at the target moment based on the influence factor;
and judging the following normality of the generating power of the generator set based on the maximum value of the generating power of the generator set at the target moment in response to the target generating power and the actual generating power of the generator at the target moment.
2. The range extender generation power following control method according to claim 1, wherein the obtaining the theoretical generation current of the generator set includes:
calculating theoretical power generation current of the generator set according to the actual rotating speed and the actual torque of the generator and the generator efficiency:
wherein I (k) theory For the theoretical current of the generator set at the target moment, U is the total voltage of the power battery, and w (k) act For the actual rotational speed of the generator set at the target moment, T (k) act For the actual torque of the generator set at the target moment, η (w (k)) act ,T(k) act ) And k is the target moment for the generator efficiency of the generator set at the actual rotating speed and the actual torque.
3. The range extender generation power following control method according to claim 2, wherein the determining the operation condition of each sensor based on the theoretical generation current and the actual generation current includes:
acquiring actual power generation current of the generator set at a target moment, and calculating an absolute value of a difference value between the actual power generation current and the theoretical power generation current;
calculating the normal coefficient of each sensor of the generator set at the target moment according to the absolute value of the difference value between the actual generating current and the theoretical generating current of the generator set at the target moment:
wherein, beta (k) is the normal coefficient of each sensor of the generator set at the target moment, delta I () 1 For the absolute value of the difference value between the actual power generation current and the theoretical power generation current of the generator set at the target moment, I 1 A normal threshold value for the difference between the actual generated current and the theoretical generated current;
and judging the normality of the generator rotating speed sensor, the torque sensor and the current sensor according to the normality coefficient of each sensor of the generator set at the target moment.
4. The range extender generation power follow-up control method according to claim 1, wherein the pre-constructed response time profile:
t(p)＝α*p+b
wherein t (p) is the response time required for the generator power of the generator set to change to p, p is the generator power of the generator set, alpha is the first generator set response time calculation coefficient, and b is the second generator set response time calculation coefficient;
calculating a first response time required by the generator set to respond to the target generated power at a first moment based on a pre-constructed response time curve:
t(p(j) target )＝α*p(j) target +
wherein t (p (j)) target ) For a first response time, p (j), required for the generator set to respond to the target generated power at a first time target And j is the first moment, and is the target power generation of the generator set at the first moment.
5. The range extender generation power follow-up control method according to claim 4, wherein the calculating the influence factor of the generator set response target generation power on the actual generation power of the generator at the target time based on the first response time is:
wherein, gamma (j, k) is an influence factor of the actual generated power of the generating set at the first moment on the target moment in response to the target generated power, and delta t is the time difference between the first moment and the target moment;
and calculating the maximum value of the response target generated power of the generator set at the target moment based on the influence factors:
wherein P (k) actmin Responding the minimum value of the target generating power for the generating set at the target moment; p (k) actmmax Responding the maximum value of the target generating power for the generator set at the target moment.
6. The range extender generation power following control method according to claim 5, wherein the determining of the normality of the generator unit generation power following based on the maximum value of the response target generation power of the generator unit at the target time and the actual generation power of the generator at the target time includes:
calculating the absolute value of the difference value between the maximum value and the minimum value of the response target generated power of the generating set at the target moment and the actual generated power:
wherein ΔP (k) actmax For the generator set to respond to the absolute value of the difference between the maximum value of the target generated power and the actual generated power at the target moment, delta P (k) actmin For the generator set to respond to the absolute value of the difference between the minimum value of the target generated power and the actual generated power at the target moment, P (k) act The actual power generated by the generator at the target moment is used as the power generated by the generator;
calculating the average value of the absolute value after accumulation;
if the first accumulated average value of the absolute value of the difference value of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is not greater than the accumulated average value normal threshold value, and the second accumulated average value of the absolute value of the difference value of the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is not greater than the accumulated average value normal threshold value, judging that the generator set normally follows the target power generation power;
if the first accumulated average value of the absolute value of the difference value of the maximum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than the accumulated average value normal threshold value, or the second accumulated average value of the absolute value of the difference value of the minimum value of the target power generation power and the actual power generation power of the generator set at the target moment is larger than the accumulated average value normal threshold value, judging that the generator set cannot normally follow the target power generation power.
7. The range extender generation power follow-up control method according to claim 6, characterized in that the method further comprises:
and if the generator set is judged to be unable to normally follow the target power, the generator set is turned off to prohibit the generator from working.
8. The utility model provides a range extender generated power follows controlling means which characterized in that includes:
the first judging module is used for acquiring theoretical power generation current and actual power generation current of the power generation unit and judging the working condition of each sensor based on the theoretical power generation current and the actual power generation current;
the first calculation module is used for calculating the actual power generation of the generator at the target moment if all the sensors are in the normal working condition;
the second calculation module is used for calculating first response time required by the generator set to respond to the target generated power at a first moment based on a pre-constructed response time curve, wherein the first moment is a moment before the target moment;
the third calculation module is used for calculating an influence factor of the response target power of the generator set on the actual power of the generator at the target moment based on the first response time, and calculating the maximum value of the response target power of the generator set at the target moment based on the influence factor;
and the second judging module is used for judging the following normality of the generating power of the generator set based on the maximum value of the response target generating power of the generator set at the target moment and the actual generating power of the generator at the target moment.
9. An electronic device comprising a memory and a processor, wherein the memory is configured to store a program; the processor, coupled to the memory, is configured to execute the program stored in the memory to implement the steps in the range extender generated power following control method according to any one of the above claims 1 to 7.
10. A computer-readable storage medium storing a computer-readable program or instructions that, when executed by a processor, is capable of implementing the steps in the range extender generation power follow-up control method according to any one of claims 1 to 7.
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