CN211969416U - Series-type oil-electricity hybrid motor drive control system - Google Patents
Series-type oil-electricity hybrid motor drive control system Download PDFInfo
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- CN211969416U CN211969416U CN202020011419.8U CN202020011419U CN211969416U CN 211969416 U CN211969416 U CN 211969416U CN 202020011419 U CN202020011419 U CN 202020011419U CN 211969416 U CN211969416 U CN 211969416U
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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
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The utility model discloses a serial-type oil-electricity hybrid motor drive control system contains motor drive controller, battery, engine, SOC estimation module, hybrid power system controller, engine electronic control unit, speed sensor, generator, rectifier, voltage sensor and current sensor. The utility model has the advantages of, need not change its overall structure in the system that can be used to the motor drive form, change the relatively poor not enough of duration of pure electric drive system, effectively prolong the duration of system and guarantee the stability of main power operating condition in the system.
Description
Technical Field
The utility model relates to a hybrid system energy management strategy field especially relates to a serial-type oil-electricity hybrid motor drive control system.
Background
Modern various electric vehicles and unmanned aerial vehicles are widely applied, most of the electric vehicles and unmanned aerial vehicles work in a motor-driven mode, and energy storage devices of the electric vehicles and unmanned aerial vehicles are almost all various types of batteries. Use many rotor unmanned aerial vehicle as the example, mostly use the lithium cell as energy supply device, accomplish the flexible swift but short during the voyage of action, its main first factor is that the energy density of battery is lower, compares in the output energy that the same quality of all the other energy can provide and will hang down a lot.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the defect that involves in the background art, provide a serial-type oil-electricity hybrid motor drive control system.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
a series-connection type oil-electricity hybrid motor drive control system comprises a motor drive controller, a battery, an engine, an SOC estimation module, a hybrid power system controller, an engine electronic control unit, a rotating speed sensor, a generator, a rectifier, a voltage sensor and a current sensor;
the control end of the motor to be driven is connected with the motor driving controller, and the current input end of the motor to be driven is respectively connected with the output end of the battery and the output end of the rectifier;
the output shaft of the engine is coaxially and fixedly connected with the input shaft of the generator, and the output end of the generator is connected with the input end of the rectifier, wherein the engine is used for driving the generator to work to generate electricity, and the generator is used for generating electricity and transmitting the generated current to the rectifier;
the rotating speed sensor is arranged on the engine and used for obtaining the rotating speed of the engine and transmitting the rotating speed to the engine electronic control unit;
the engine electronic control unit is respectively connected with the hybrid power system controller and the engine and is used for transmitting the received rotating speed of the engine to the hybrid power system controller and controlling the work of the engine according to the control quantity of the opening of an engine throttle valve output by the hybrid power system controller;
the voltage sensor and the current sensor are arranged at the output end of the battery, wherein the voltage sensor is used for detecting the voltage at the output end of the battery and transmitting the voltage to the SOC estimation module; the current sensor is used for detecting the current at the output end of the battery and respectively transmitting the current to the SOC estimation module and the hybrid power system controller;
the SOC estimation module is respectively connected with the voltage sensor, the current sensor and the hybrid power system controller, and is used for calculating the residual electric quantity of the battery according to the received voltage and current of the output end of the battery and transmitting the residual electric quantity to the hybrid power system controller;
the hybrid power system controller is respectively connected with the motor drive controller, the current sensor, the SOC estimation module and the engine electronic control unit, and is used for calculating the control quantity of the opening degree of the throttle valve of the engine according to a motor control signal sent by the motor drive controller, the current of the output end of the battery, the residual electric quantity of the battery and the rotating speed of the engine and transmitting the control quantity to the engine electronic control unit.
The utility model also discloses a control method of this serial-type oil-electricity hybrid motor drive control system contains following step:
step 1), a rotating speed sensor obtains the rotating speed of an engine and transmits the rotating speed to an electronic control unit of the engine;
the voltage sensor obtains the voltage of the output end of the battery and transmits the voltage to the SOC estimation module;
the current sensor obtains the current of the output end of the battery and respectively transmits the current to the SOC estimation module and the hybrid power system controller;
step 2), the SOC estimation module calculates the residual electric quantity of the battery according to the received voltage and current of the output end of the battery and transmits the residual electric quantity to the hybrid power system controller;
step 3), the hybrid power system controller calculates the opening control quantity of the throttle valve of the engine by adopting a fuzzy control method according to a motor control signal sent by the motor drive controller, the current of the output end of the battery, the residual electric quantity of the battery and the rotating speed of the engine, and transmits the opening control quantity to the electronic control unit of the engine;
step 4), the electronic engine control unit controls the work of the engine according to the control quantity of the opening of the throttle valve of the engine output by the hybrid power system controller;
and 5), the engine drives the generator to work to generate electricity, and the generated current is transmitted through the rectifier and then drives the motor to be driven to work together with the current output end.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
the utility model provides a serial-type oil-electricity hybrid motor drive control system guarantees that system terminal demand power in time obtains the effective extension of response and system duration to can reach the stable characteristic of system.
Drawings
FIG. 1 is a diagram of the control system of the present invention;
fig. 2 is a schematic diagram of the signal flow of the control method of the present invention;
fig. 3 is a logic diagram of the control method algorithm of the present invention.
Detailed Description
The technical scheme of the utility model is further explained in detail with the attached drawings as follows:
the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.
As shown in fig. 1, the utility model discloses a series-type oil-electricity hybrid motor drive control system, which comprises a motor drive controller, a battery, an engine, an SOC estimation module, a hybrid power system controller, an engine electronic control unit, an engine, a rotation speed sensor, a rectifier, a voltage sensor and a current sensor; the ECU in the figure is an electronic engine control unit;
the control end of the motor to be driven is connected with the motor driving controller, and the current input end of the motor to be driven is respectively connected with the output end of the battery and the output end of the rectifier;
the output shaft of the engine is coaxially and fixedly connected with the input shaft of the generator, and the output end of the generator is connected with the input end of the rectifier, wherein the engine is used for driving the generator to work to generate electricity, and the generator is used for generating electricity and transmitting the generated current to the rectifier;
the rotating speed sensor is arranged on the engine and used for obtaining the rotating speed of the engine and transmitting the rotating speed to the engine electronic control unit;
the engine electronic control unit is respectively connected with the hybrid power system controller and the engine and is used for transmitting the received rotating speed of the engine to the hybrid power system controller and controlling the work of the engine according to the control quantity of the opening of an engine throttle valve output by the hybrid power system controller;
the voltage sensor and the current sensor are arranged at the output end of the battery, wherein the voltage sensor is used for detecting the voltage at the output end of the battery and transmitting the voltage to the SOC estimation module; the current sensor is used for detecting the current at the output end of the battery and respectively transmitting the current to the SOC estimation module and the hybrid power system controller;
the SOC estimation module is respectively connected with the voltage sensor, the current sensor and the hybrid power system controller, and is used for calculating the residual electric quantity of the battery according to the received voltage and current of the output end of the battery and transmitting the residual electric quantity to the hybrid power system controller;
the hybrid power system controller is respectively connected with the motor drive controller, the current sensor, the SOC estimation module and the engine electronic control unit, and is used for calculating the control quantity of the opening degree of the throttle valve of the engine according to a motor control signal sent by the motor drive controller, the current of the output end of the battery, the residual electric quantity of the battery and the rotating speed of the engine and transmitting the control quantity to the engine electronic control unit.
The direct control of the engine is completed by the ECU, debugging parameters of the engine are stored in the ECU, and working parameters such as throttle opening, oil injection pulse width, ignition time and the like corresponding to any time of the engine are controlled.
The hybrid power system controller collects a motor control signal output by a motor drive controller in a conventional pure battery drive system and an engine rotating speed signal transmitted by an ECU (electronic control unit), and outputs an engine adjusting signal initial signal according to a fuzzy rule by utilizing a fuzzy control strategy set in the controller.
The current and voltage sensor is arranged in a battery loop, the working current and voltage of a battery end are collected, the collected current signal and the engine adjustment initial signal obtained in the previous step are used as the input of a second fuzzy controller, fuzzification, fuzzy inference and defuzzification of the input are completed according to the fuzzy rule of the fuzzy controller to obtain an engine adjustment signal, the signal is output to an ECU (electronic control unit) to be used as a change quantity signal of the opening of an engine throttle valve to adjust the working state of the engine, and the aim of the step is to enable the battery to work at a set constant current.
The method comprises the steps that battery current and voltage signals acquired by a current and voltage sensor are transmitted to a battery SOC estimation module, the estimation of the residual electric quantity of a battery is completed according to a program in the SOC estimation module, an estimation result is transmitted to a hybrid power system controller and serves as a working condition of the controller, and an early warning signal is set to be sent out after the SOC of the battery is lower than a safety threshold value and is returned in time.
The strategy in the hybrid power system controller in the system adopts a double fuzzy control method, input variables are respectively fuzzified into NB, (NM), (NS), (Z), (PS), (PM), (PB) and other classes, an optimal fuzzy rule is established through simulation optimization with system response time and stability as guidance, fuzzy output quantity is obtained through calculation according to the fuzzy rule, an accurate output value is obtained after defuzzification, a first double fuzzy control obtains an initial adjustment quantity according to the change of an external control signal and the rotating speed of an engine, a second double fuzzy control obtains a final engine adjustment signal according to the adjustment quantity and the output current of a battery, the stability of the system is optimized, and the battery is ensured to work at a set small current so as to prolong the time of flight.
The utility model also discloses a control method of this serial-type oil-electricity hybrid motor drive control system contains following step:
step 1), a rotating speed sensor obtains the rotating speed of an engine and transmits the rotating speed to an electronic control unit of the engine;
the voltage sensor obtains the voltage of the output end of the battery and transmits the voltage to the SOC estimation module;
the current sensor obtains the current of the output end of the battery and respectively transmits the current to the SOC estimation module and the hybrid power system controller;
step 2), the SOC estimation module calculates the residual electric quantity of the battery according to the received voltage and current of the output end of the battery and transmits the residual electric quantity to the hybrid power system controller;
step 3), the hybrid power system controller calculates the opening control quantity of the throttle valve of the engine by adopting a fuzzy control method according to a motor control signal sent by the motor drive controller, the current of the output end of the battery, the residual electric quantity of the battery and the rotating speed of the engine, and transmits the opening control quantity to the electronic control unit of the engine;
step 4), the electronic engine control unit controls the work of the engine according to the control quantity of the opening of the throttle valve of the engine output by the hybrid power system controller;
and 5), the engine drives the generator to work to generate electricity, and the generated current is transmitted through the rectifier and then drives the motor to be driven to work together with the current output end.
As shown in fig. 2, the control method of the present invention includes signal flow: the hybrid power system controller is provided with a target current value of a compensation battery, the controller combines an input engine rotating speed signal and an input motor control signal, outputs a control signal (an accelerator adjusting signal) of the engine through an internal fuzzy control method, and an execution part controls the engine to complete the adjustment of the working state after receiving the control signal. The engine drives the generator to generate electricity, and the wide arrows in fig. 2 indicate the form of electric energy, and it is noted that the actual flow of electric energy in the system is not as indicated by the arrows in the figure, and the direction in the figure indicates that the change of the required power of the terminal load causes the change of the output power of the compensation battery. The current signal of the compensation battery is transmitted to the SOC estimation module and the hybrid power system controller, the SOC estimation module outputs a battery SOC estimation result to the hybrid power system controller to restrict a proper range of the battery SOC, and the current signal transmitted to the controller is compared with a preset target current and then adjusts an engine control signal output by the controller according to a rule base.
As shown in fig. 3, the algorithm logic of the control method of the present invention is as follows: firstly, converting all monitored precise quantities (motor control signals and engine rotating speed signals) into fuzzy quantities adaptive to fuzzy calculation, wherein the fuzzy quantities are respectively represented as fuzzy variable A and fuzzy variable B in figure 3, calculating the obtained fuzzy quantities through a fuzzy controller, and calculating fuzzy output quantity Y according to a fuzzy rule base by using fuzzy variable A, B in a first double fuzzy controller; the method comprises the steps of calculating to obtain fuzzy output Y' according to a fuzzy rule base 2, defuzzifying to obtain the accurate quantity of an engine control signal (throttle adjustment value). The two fuzzy control rules take the response time and stability of the system as optimization parameters, and the optimal result is obtained through simulation and test.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (1)
1. A series-connection type oil-electricity hybrid motor drive control system is characterized by comprising a motor drive controller, a battery, an engine, an SOC estimation module, a hybrid power system controller, an engine electronic control unit, a rotating speed sensor, a generator, a rectifier, a voltage sensor and a current sensor;
the control end of the motor to be driven is connected with the motor driving controller, and the current input end of the motor to be driven is respectively connected with the output end of the battery and the output end of the rectifier;
the output shaft of the engine is coaxially and fixedly connected with the input shaft of the generator, and the output end of the generator is connected with the input end of the rectifier, wherein the engine is used for driving the generator to work to generate electricity, and the generator is used for generating electricity and transmitting the generated current to the rectifier;
the rotating speed sensor is arranged on the engine and used for obtaining the rotating speed of the engine and transmitting the rotating speed to the engine electronic control unit;
the engine electronic control unit is respectively connected with the hybrid power system controller and the engine and is used for transmitting the received rotating speed of the engine to the hybrid power system controller and controlling the work of the engine according to the control quantity of the opening of an engine throttle valve output by the hybrid power system controller;
the voltage sensor and the current sensor are arranged at the output end of the battery, wherein the voltage sensor is used for detecting the voltage at the output end of the battery and transmitting the voltage to the SOC estimation module; the current sensor is used for detecting the current at the output end of the battery and respectively transmitting the current to the SOC estimation module and the hybrid power system controller;
the SOC estimation module is respectively connected with the voltage sensor, the current sensor and the hybrid power system controller, and is used for calculating the residual electric quantity of the battery according to the received voltage and current of the output end of the battery and transmitting the residual electric quantity to the hybrid power system controller;
the hybrid power system controller is respectively connected with the motor drive controller, the current sensor, the SOC estimation module and the engine electronic control unit, and is used for calculating the control quantity of the opening degree of the throttle valve of the engine according to a motor control signal sent by the motor drive controller, the current of the output end of the battery, the residual electric quantity of the battery and the rotating speed of the engine and transmitting the control quantity to the engine electronic control unit.
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| CN202020011419.8U CN211969416U (en) | 2020-01-03 | 2020-01-03 | Series-type oil-electricity hybrid motor drive control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038492A (en) * | 2020-01-03 | 2020-04-21 | 南京航空航天大学 | Series-connection type oil-electricity hybrid motor drive control system and control method thereof |
| CN116149364A (en) * | 2022-09-29 | 2023-05-23 | 中国民用航空飞行学院 | Modeling method for serial oil-electricity hybrid vertical-lift fixed-wing unmanned aerial vehicle power system |
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2020
- 2020-01-03 CN CN202020011419.8U patent/CN211969416U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038492A (en) * | 2020-01-03 | 2020-04-21 | 南京航空航天大学 | Series-connection type oil-electricity hybrid motor drive control system and control method thereof |
| CN116149364A (en) * | 2022-09-29 | 2023-05-23 | 中国民用航空飞行学院 | Modeling method for serial oil-electricity hybrid vertical-lift fixed-wing unmanned aerial vehicle power system |
| CN116149364B (en) * | 2022-09-29 | 2023-12-22 | 中国民用航空飞行学院 | Modeling method for serial oil-electricity hybrid vertical-lift fixed-wing unmanned aerial vehicle power system |
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