CN102267366B - Auxiliary power unit for series hybrid power passenger car and control method - Google Patents
Auxiliary power unit for series hybrid power passenger car and control method Download PDFInfo
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- CN102267366B CN102267366B CN2011101304725A CN201110130472A CN102267366B CN 102267366 B CN102267366 B CN 102267366B CN 2011101304725 A CN2011101304725 A CN 2011101304725A CN 201110130472 A CN201110130472 A CN 201110130472A CN 102267366 B CN102267366 B CN 102267366B
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Abstract
The invention relates to an auxiliary power unit for a series hybrid power passenger car and a control method. The auxiliary power unit comprises a diesel motor, a permanent magnetic synchronous generator, a three-phase uncontrollable rectifier and an auxiliary power unit controller, wherein the auxiliary power unit controller comprises a feed forward controller and a PID (Proportional Integral Derivative) controller; an output end of the diesel motor is connected to the permanent magnetic synchronous generator; the output end of the permanent magnetic synchronous generator is connected to the three-phase uncontrollable rectifier; the output end of the three-phase uncontrollable rectifier is in parallel connection with a voltage sensor and is in serial connection with a current sensor; a target current is calculated on the basis of a direct current voltage acquired by the voltage sensor and a target power signal sent by a controller for the whole series hybrid power passenger car; the target current is inputted to the feed forward controller; a current error between an actual output current acquired by the current sensor and the target current is inputted to the PID controller; and the summation of an output value of the feed forward controller and an output value of the PID controller is taken as an oil spraying quantity and is inputted into the diesel motor. The auxiliary power unit provided by the invention can be widely applied to the series hybrid power passenger car.
Description
Technical field
The present invention relates to a kind of Auxiliary Power Unit and control method of passenger vehicle, particularly about a kind of Auxiliary Power Unit and control method of Series Hybrid Electric Bus.
Background technology
The power source of Series Hybrid Electric Bus generally forms (as shown in Figure 1) by vehicle power generation system 11 and electrokinetic cell 12 two parts.Vehicle power generation system 11 is also referred to as Auxiliary Power Unit, and Auxiliary Power Unit is made of driving engine 13, electrical generator 14, rectifier 15, is used for to power bus transmission of electric energy to traction electric machine 16, and be that electrokinetic cell 12 charges.Auxiliary Power Unit can be widely used in hybrid power passenger car, and its low cost, high efficiency and anti-emission carburetor are the total development tendencys of hybrid power passenger car, and the control of Auxiliary Power Unit itself is also one of difficulties of research all the time.At present in Series Hybrid Electric Bus, Auxiliary Power Unit mostly adopts the configuration of diesel motor+electric excitation generator+uncontrollable rectifier, but because power density and the efficient of electric excitation generator are lower, therefore affected volume and the efficient of whole Auxiliary Power Unit.Auxiliary Power Unit also has the configuration of employing diesel motor+magneto alternator+PWM rectifier, decoupling zero by system, can control rotary speed of diesel engine, diesel motor torque and magneto alternator torque easily, make diesel motor be operated in high efficient area, can improve to a great extent efficient and the fuel economy of Auxiliary Power Unit, but the PWM rectifier has but increased the cost of Auxiliary Power Unit.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide Auxiliary Power Unit and the control method of the Series Hybrid Electric Bus that a kind of power density is large, efficient is high, cost is low.
For achieving the above object, the present invention takes following technical scheme: a kind of Auxiliary Power Unit of Series Hybrid Electric Bus, it is characterized in that: it comprises diesel motor, magneto alternator, the uncontrollable rectifier of three-phase and Control of Auxiliary Power Unit device, described Control of Auxiliary Power Unit device comprises feedforward controller and PID controller; The mouth of described diesel motor connects described magneto alternator, the mouth of described magneto alternator connects the uncontrollable rectifier of described three-phase, the uncontrollable rectifier output end of described three-phase be connected in parallel a voltage sensor, be connected in series a current sensor; The target power signal that the vdc that described voltage sensor is collected and hybrid power whole passenger vehicle controller send, by the described feedforward controller of target current input that calculates, with actual output current and the described PID controller of the input of the current error between described target current that described current sensor collects, input described diesel motor as fuel charge after the output valve addition of the output valve of described feedforward controller and described PID controller.
Described diesel motor is high pressure co-rail diesel engine.
Described magneto alternator is the efficient rare-earth magneto alternator.
The uncontrollable rectifier of described three-phase is comprised of power diode.
The control method of above-mentioned Auxiliary Power Unit, comprise the following steps: the target power signal that 1) will be sent by the hybrid power whole passenger vehicle controller calculates with the d. c. voltage signal by the uncontrollable rectifier output end collection of three-phase, obtains the target current of Auxiliary Power Unit: the vdc of the uncontrollable rectifier output of target current=target power/three-phase; 2) with step 1) target current that obtains and carry out current error by the actual output current signal of the uncontrollable rectifier 3 mouth collections of three-phase and calculate: current error=target current-actual output current; 3) will be by step 2) the current error input PID controller asked for, will be by step 1) the target current I input feedforward controller that obtains, utilize the computing formula m that is preset in feedforward controller
f=f (I) obtains the output valve m of feedforward controller
f4) with the output valve addition of the output valve of feedforward controller and the PID controller fuel charge as diesel motor.
Described computing formula m
f=f (I) is that Auxiliary Power Unit is under the homeostasis condition, the diesel motor fuel charge that obtains by test and the relation of Auxiliary Power Unit outgoing current, and then simulate take Auxiliary Power Unit target current I as independent variable, with diesel motor fuel charge m
fCorresponding relation for dependent variable.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, Auxiliary Power Unit of the present invention is due to the configuration that adopts diesel motor+magneto alternator+uncontrollable rectifier, mouth at uncontrollable rectifier is provided with voltage sensor and current sensor simultaneously, therefore can be with the voltage and current signal feedback that obtains in real time to the Control of Auxiliary Power Unit device, at any time the fuel charge of diesel motor is adjusted, made the power density of Auxiliary Power Unit of the present invention large, efficient is high, cost is low.2, control method of the present invention adopts with the single argument control method of diesel motor fuel charge as control variable, design feedforward+PID feedback control algorithm is regulated the horsepower output of Auxiliary Power Unit, has therefore effectively guaranteed the dynamic characteristics of Auxiliary Power Unit power stage.The present invention can be widely used in hybrid power passenger car.
Description of drawings
Fig. 1 is the composition form of general power source
Fig. 2 is structural representation of the present invention
Fig. 3 is the control method schematic flow sheet of Auxiliary Power Unit of the present invention
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 2 and Figure 3, Auxiliary Power Unit of the present invention comprises diesel motor 1, magneto alternator 2, the uncontrollable rectifier 3 of three-phase and Control of Auxiliary Power Unit device 4.Control of Auxiliary Power Unit device 4 comprises feedforward controller 41 and PID controller 42.Diesel motor 1 mouth connects magneto alternator 2 by coupler 5, magneto alternator 2 mouths connect the uncontrollable rectifier 3 of three-phase by three cables 6, uncontrollable rectifier 3 mouths of three-phase be connected in parallel a voltage sensor 7, be connected in series a current sensor 8, the other end of voltage sensor 7 connects ground wire, and current sensor 8 other ends connect electrokinetic cell 9 and traction electric machine.The target power signal that the d. c. voltage signal that described voltage sensor 7 is collected and hybrid power whole passenger vehicle controller send, by the target current input feedforward controller 41 that calculates, in the actual output current that current sensor 8 is collected and the input of the current error between target current PID controller 42, input diesel motor 1 as fuel charge after the output valve addition with the output valve of feedforward controller 41 and PID controller 42.
In above-described embodiment, diesel motor 1 of the present invention can adopt high pressure co-rail diesel engine (only as example, but be not limited to this), diesel motor 1 fuel charge is used for controlling the horsepower output of diesel motor 1, and then realizes controlling as the single argument of Control of Auxiliary Power Unit variable with diesel motor 1 fuel charge.Magneto alternator 2 of the present invention can adopt efficient rare-earth magneto alternator (only as example, but being not limited to this).The uncontrollable rectifier 3 of three-phase can be comprised of power diode (only as example, but being not limited to this).
Auxiliary Power Unit of Series Hybrid Electric Bus control method of the present invention comprises the following steps:
The target power signal that 1) will be sent by the hybrid power whole passenger vehicle controller carries out computing with the d. c. voltage signal by the uncontrollable rectifier 3 mouth collections of three-phase, obtains the target current of Auxiliary Power Unit:
The uncontrollable rectifier output dc voltage of target current=target power/three-phase;
2) will be by step 1) target current that obtains carries out error with the actual output current signal by the uncontrollable rectifier 3 mouth collections of three-phase and asks for:
Current error=target current-actual output current;
3) will be by step 1) target current that obtains sends into feedforward controller 41, utilizes the computing formula m that is preset in feedforward controller 41
f=f (I) obtains the output valve of feedforward controller, and wherein I is the target current value in a certain moment, m
fIt is oil spout value corresponding under this target current I; Simultaneously will be by step 2) the current error input PID controller 42 asked for, obtain PID controller 42 output valves, this numerical value is a compensation oil spout value for current error;
4) with the output valve of feedforward controller 41 and the output valve addition of PID controller 42, jointly determine the fuel charge of diesel motor 1.
Above-mentioned steps 3) in, computing formula m
f=f (I) is that Auxiliary Power Unit is under the homeostasis condition, the diesel motor fuel charge that obtains by test and the relation of Auxiliary Power Unit outgoing current, thereby simulate take Auxiliary Power Unit target current I as independent variable, with diesel motor fuel charge m
fEquation m for dependent variable
f=f (I).This equation is preset in feedforward controller 41 as the feedforward controller algorithm, in the dynamic duty of Auxiliary Power Unit, this feedforward controller 41 with the Auxiliary Power Unit target current as input, with the feed forward control amount of feedforward controller output valve as the diesel motor fuel charge, utilize feed forward control to solve Non-linear coupling problem in dynamic process, accelerate the rate of following of target instruction target word, utilize the PID controlled reset to eliminate the steady track error.
Above-mentioned computing formula m
f=f (I) is based on following principle: the net output of establishing driving engine is:
In formula, P
eBe effective power, η
etBe the net effciency of fuel energy conversion, B is the complete machine specific consumption of fuel, H
uBe lower calorific value of fuel; When engine operation in steady-state process, η
et, H
uConstant, the driving engine net output only has relation with the complete machine specific consumption of fuel;
And complete machine specific consumption of fuel B refers to total fuel mass that the unit time driving engine consumes:
In formula, i is number of cylinders, and n is rotating speed, g
bBe the every circulating fuel consumption of single cylinder, τ is stroke coefficient, after driving engine is determined, number of cylinders i, stroke coefficient τ namely determine, when the Auxiliary Power Unit mouth connects high capacity cell, namely approximate when constant when the Auxiliary Power Unit output voltage, engine speed n is approximate constant, therefore total fuel mass B only with circulating fuel consumption g
bRelation is arranged, namely only relevant to Engine Injection Mass.
The various embodiments described above only are used for explanation the present invention; wherein the structure of each parts, connection mode and control step etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.
Claims (5)
1. the Auxiliary Power Unit of a Series Hybrid Electric Bus, it is characterized in that: it comprises diesel motor, magneto alternator, the uncontrollable rectifier of three-phase and Control of Auxiliary Power Unit device, described Control of Auxiliary Power Unit device comprises feedforward controller and PID controller; The mouth of described diesel motor connects described magneto alternator, the mouth of described magneto alternator connects the uncontrollable rectifier of described three-phase, the uncontrollable rectifier output end of described three-phase be connected in parallel a voltage sensor, be connected in series a current sensor; The target power signal that the vdc that described voltage sensor is collected and hybrid power whole passenger vehicle controller send is by calculating target current, target current is inputted described feedforward controller, the actual output current that described current sensor is collected and the described PID controller of the input of the current error between described target current are inputted described diesel motor as fuel charge after the output valve addition with the output valve of described feedforward controller and described PID controller.
2. the Auxiliary Power Unit of a kind of Series Hybrid Electric Bus as claimed in claim 1, it is characterized in that: described diesel motor is high pressure co-rail diesel engine.
3. the Auxiliary Power Unit of a kind of Series Hybrid Electric Bus as claimed in claim 1, it is characterized in that: described magneto alternator is the efficient rare-earth magneto alternator.
4. the Auxiliary Power Unit of a kind of Series Hybrid Electric Bus as claimed in claim 2, it is characterized in that: described magneto alternator is the efficient rare-earth magneto alternator.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of Auxiliary Power Unit of Series Hybrid Electric Bus, it is characterized in that: the uncontrollable rectifier of described three-phase is comprised of power diode.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9561789B2 (en) | 2012-03-28 | 2017-02-07 | Kubota Corporation | Hybrid work vehicle |
| CN102926812B (en) * | 2012-10-24 | 2014-06-25 | 江苏大学 | Rotational speed control method for pilot injection type numerical control air-powered engine |
| CN104210486B (en) * | 2014-08-13 | 2017-01-11 | 潍柴动力股份有限公司 | Electric energy control method and electric energy control system for hybrid power engineering machinery vehicle |
| CN105422550A (en) * | 2015-12-09 | 2016-03-23 | 西安建筑科技大学 | Composite compensation control system and method of variable-rotation-speed hydraulic power source |
| CN106089464B (en) * | 2016-08-16 | 2019-04-05 | 株洲中车时代电气股份有限公司 | A kind of diesel engine output power control method and device |
| CN112859582B (en) * | 2021-01-07 | 2022-12-20 | 平阳星嘉智能科技有限公司 | Incremental PID controller in motor control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1911697A (en) * | 2006-05-31 | 2007-02-14 | 清华大学 | Auxiliary power unit having electric controlled clutch applied for series type mixed power |
| CN101920664A (en) * | 2010-09-03 | 2010-12-22 | 重庆长安汽车股份有限公司 | Auxiliary generation system for hybrid vehicle |
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| JPS63263139A (en) * | 1987-04-17 | 1988-10-31 | Daihatsu Motor Co Ltd | Method of controlling speed change of continuously variable transmission |
| JP2001057706A (en) * | 1999-08-09 | 2001-02-27 | Mazda Motor Corp | Running gear for vehicle |
| KR20110011437A (en) * | 2009-07-28 | 2011-02-08 | 콘티넨탈 오토모티브 시스템 주식회사 | System and methdo for compensating pid feedback control signal of hybride vehicle |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1911697A (en) * | 2006-05-31 | 2007-02-14 | 清华大学 | Auxiliary power unit having electric controlled clutch applied for series type mixed power |
| CN101920664A (en) * | 2010-09-03 | 2010-12-22 | 重庆长安汽车股份有限公司 | Auxiliary generation system for hybrid vehicle |
Non-Patent Citations (2)
| Title |
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| JP昭63-263139A 1988.10.31 |
| JP特开2001-57706A 2001.02.27 |
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