EP3235120A1 - Procédé de contrôle d'un dispositif de régulation d'un alternateur de véhicule automobile, dispositif de régulation et alternateur correspondants - Google Patents
Procédé de contrôle d'un dispositif de régulation d'un alternateur de véhicule automobile, dispositif de régulation et alternateur correspondantsInfo
- Publication number
- EP3235120A1 EP3235120A1 EP15817978.8A EP15817978A EP3235120A1 EP 3235120 A1 EP3235120 A1 EP 3235120A1 EP 15817978 A EP15817978 A EP 15817978A EP 3235120 A1 EP3235120 A1 EP 3235120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- predetermined
- circuit
- controlling
- excitation
- short
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/006—Means for protecting the generator by using control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
- H02P9/305—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices controlling voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
-
- 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
- H02J7/16—Regulation of the charging current or voltage by variation of field
- H02J7/24—Regulation of the charging current or voltage by variation of field using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
- H03K17/0822—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in field-effect transistor switches
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
- H02H7/065—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors against excitation faults
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/45—Special adaptation of control arrangements for generators for motor vehicles, e.g. car alternators
Definitions
- the present invention relates to a method of controlling a regulating device of a motor vehicle alternator.
- the invention also relates to this regulating device, as well as the alternator comprising this regulating device. BACKGROUND ART OF THE INVENTION.
- the important equipment of a motor vehicle is provided with detection and signaling devices for any operating anomaly.
- the generatrix usually consisting of an alternator whose phase voltages are rectified, is one of these important equipment, and any driver knows the location of the red light said "charge" on the dashboard of his car.
- the electronic voltage regulator described in the patent application FR2642580 of the company VALEO ELECTRICAL EQUIPMENT MOTOR comprises defect detection means which analyze the concordance between different accessible parameters, including the concordance between:
- the second hypothesis indirectly detects the following defects:
- an open excitation circuit (open inductor winding, broom stuck in its housing, etc.).
- the company VALEO EQUIPEMENTS ELECTRIQUES MOTEUR has described in the patent application FR2910639 a similar method for detecting a solution. continuity of the excitation circuit applicable to the case where the magnetic circuit of the alternator comprises permanent magnets or has a high remanence.
- Modern alternator regulators incorporate a power stage, usually a so-called "high side” transistor, which controls an excitation current flowing in an excitation winding of a rotor of the alternator.
- the rotor creates a magnetic field whose value is adjusted by the excitation current in order to maintain the DC voltage generated by the alternator, after recovery of the phase voltages, to the desired value.
- the present invention therefore aims to overcome the drawbacks of the absence of detection of this type of failure in order to manage a short-circuit current and to guarantee the integrity of the regulator components.
- the invention relates to a method of controlling a regulator of a motor vehicle alternator controlling a DC voltage generated by the generator to a predetermined set value.
- This DC voltage is controlled by controlling a current flowing in an excitation circuit having an excitation winding of a rotor of the alternator by means of a semiconductor switch controlled by a control signal of a period predetermined.
- the method of controlling a regulator of a motor vehicle alternator object of the present invention is of the type of those known per se comprising a detection of a failure of the excitation circuit.
- At least one short circuit of the excitation winding is detected.
- control signal is generated from a combination of a setpoint signal formed by pulses of the predetermined period having a duty cycle representative of the setpoint, and a detection signal. indicative of the short circuit.
- the semiconductor switch is transconductor controlled by the control signal during at least a first part. of this predetermined period with at least one predetermined current slope by limiting an intensity of the excitation current to a predetermined limit value.
- the semiconductor switch is switched into a state passing through the control signal for at least a second part of the predetermined period by limiting this intensity of the excitation current to this predetermined limit value.
- a first counter is started for a first predetermined period
- an estimation value of a short-circuit state is calculated from the intensity of the excitation current
- the detection signal is activated
- the first counter is reset
- the semiconductor switch is driven by the control signal with the predetermined current slope to effect a transition to an open state
- a second predetermined time is generated by means of a second counter and the semiconductor switch is kept in the open state during the second delay.
- the estimation value of the short-circuit state is the average value of the intensity of the excitation current.
- the limit value and the first delay are defined so that a power to be dissipated is less than a maximum power allowed by a dissipator of the semiconductor switch.
- the invention also relates to a device for regulating a motor vehicle alternator adapted to the implementation of the method described above.
- This device comprises means for controlling a DC voltage generated by the alternator to a predetermined reference value by controlling a current flowing in an excitation circuit comprising an excitation winding of a rotor of the alternator at means of a semiconductor switch controlled by a control signal of a predetermined period.
- the regulating device in question is of the type of those further comprising means for detecting a failure of the excitation circuit.
- these detection means detect at least one short circuit of the excitation winding.
- the servocontrol means comprise a regulation loop generating a setpoint signal formed by pulses of the predetermined period having a duty cycle representative of the setpoint value and the detection means comprise a detection module generating a detection signal indicative of the short circuit,
- the regulating device further comprises means for combining the reference signal and the detection signal producing an input signal of a control circuit generating the control signal.
- the detection module comprises:
- the object of the invention is also a motor vehicle alternator comprising a control device as described above.
- FIG. 1 illustrates an overcurrent of the excitation current in the event of a short-circuit of the excitation winding of the rotor of an alternator without the regulation device according to the invention.
- FIG. 2 shows a characteristic of a MOSFET power transistor implemented in the regulation device according to the invention
- FIG. 3 represents a control device according to the invention and a transconductance mode model of the power transistor whose characteristic is shown in FIG. 2.
- Figure 4a shows timing diagrams illustrating the control method of the regulating device according to the invention in the case where the short circuit occurs when the power transistor is in an open state.
- Figure 4b shows timing diagrams illustrating the control method of the control device according to the invention in the case where the short circuit occurs when the power transistor is in an on state.
- Figure 5 shows time diagrams illustrating a variation of the control method of the control device according to the invention in the case where the short circuit occurs when the power transistor is in an on state.
- Figure 6 is a block diagram of the detection of a short circuit in the control device according to the invention. DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION
- Alternator regulators often incorporate a protection function against short-circuit currents. These functions are elementary designs with a power stage cutout if the current is exceeded with respect to a predefined value lcc_Th, as shown in Figure 1.
- the intensity I of the current in the excitation winding grows very rapidly with an upward slope 1 depending only on impedances present in the excitation circuit
- the short circuit time ⁇ that is to say the time during which the transistor Tr remains in the ON state before the protection function controls its transition to the OFF state, depends on the time of electronics reaction and is poorly controlled.
- the intensity I flowing in the excitation circuit can reach a very high value Imax while the resistance R D s (ON) of a power transistor Tr of the MOSFET type remains very low before the intensity I decreases in a downward slope 2 when the transistor Tr switches to the open state OFF.
- the principle of the control method of a regulator device of a motor vehicle alternator according to the invention is to use the dependence of a drain current I D of a power transistor MOSFET of a gate voltage.
- source V G s shown in Figure 2 to control the transistor "high side" 3 of the control device 4 shown in Figure 3 to limit the current ID in the power stage 5 when the excitation winding 6 is in short circuit.
- a MOSFET transistor 3 can temporarily operate in transconductance mode (in a Sat saturation zone outside a Res resistor zone for a drain voltage).
- - source V D s sufficiently high), that is to say as a voltage controlled infinite impedance current generator 7, as represented by the equivalent model of FIG. 3.
- the drain intensity l D i is low, for a gate-source voltage V G s2 average, the drain intensity ⁇ D2 corresponding is average, and for a gate-source voltage V G s3 high, the drain intensity l D 3 is strong, as shown in Figure 2.
- the transistor 3 is therefore polarized with a gate-source voltage V G s such that the current flowing in the transistor 3 can not exceed a predetermined value ILIM, as will be explained in connection with the Figures 4a, 4b and 5.
- the intensity of the excitation current ID will be limited to the shaded area 8 of FIG. 2.
- the transistor 3 in current generator 7 will also be advantageously used to manage a current switching between this transistor 3 and a freewheeling diode 9.
- the operation of the power stage 5 is fixed period T or more rarely variable frequency; in both cases the duty cycle r is variable to control the output voltage B + A of the alternator to a set value.
- the power stage 5 is controlled EXC_DR by a combination of a setpoint signal EXC (pulse width modulated by a duty cycle r calculated by the regulation algorithm 1 1) and a ThJHEXCCD short circuit detection signal formed in a detection module 12.
- the combination EXC_DR is applied to an input of a control circuit 13 which controls in voltage V G s the gate G of the power transistor 3.
- the short circuit SC appears when the transistor 3 is in the open state OFF or during the current switching transition
- the short circuit SC appears when the transistor 3 is in the ON state.
- the intensity IROT of the excitation current rises according to a predetermined current slope strategy in the operating mode of transistor 3 as a transconductor.
- the intensity IROT of the current is then limited to a predetermined limit value ILIM during a first predetermined period T1, then descends according to the predetermined current slope.
- the first delay T1 and the limit value ILIM are defined so that the power to be dissipated is less than the maximum power that a sink of the transistor 3 can dissipate.
- the IROT intensity of the short-circuit current is limited to the limit value ILIM during the first predetermined period T1, and then goes down again according to the predetermined current slope.
- a first solution is to use the transistor 3 in current limiting. This leads to applying a gate-source voltage V G s lower than a maximum value; the RDS (ON) is not minimum, which contributes to additional heating.
- the transistor 3 of the open / on mode is immediately switched to the transconductor mode and the intensity IROT of the excitation current is limited to the value limit ILIM during the first delay first predetermined time T1.
- the establishment time of the voltage V G s is not immediate.
- the IROT intensity of the short-circuit current is at worst case B + A / R D s (ON), if we consider an excitation circuit without parasitic components. Then it decreases to reach the ILIM value as shown in Figure 5.
- the current may present oscillations due to the capacitors and residual chokes present in the circuit.
- a confirmation time is fixed by calculation so that a quantity of heat produced by the short circuit SC can be evacuated by the sink of the power transistor 3. For this, one fixes at second delay T2 greater than a minimum time T_retry_min before return transistor 3 to the on state because the short circuit can occur at any time, with respect to the pulses of the reference signal EXC.
- Figure 6 shows an example of realization of the confirmation time and the minimum time management T_retry_min.
- a first comparator 15 determines that a measurement of the intensity IROT of the excitation current, obtained by acquisition and filtering means 16 known per se, reaches the predetermined high threshold TH_SC_HIGH, a first counter 17 is started TIMER_EN to generate a first delay T1 (of 10 ⁇ for example). During this first delay T1, AV_EN is calculated by calculation means 18 to estimate a short-circuit in the form of a mean value IROT_AV of the intensity IROT of the excitation current.
- a second comparator 19 determines that the calculated average value IROT_AV is greater than a predetermined low threshold TH_SC_LOW, then the short circuit SC is detected SCD and the detection signal Th_HEXCCD is enabled. If the average value IROT_AV goes below the low threshold TH_SC_LOW, then the first counter 17 is reset.
- the power transistor 3 is cut with a current slope control.
- the transistor 3 is kept in the open state OFF during the second delay
- T2 greater than the minimum time T_retry_min necessary to dissipate the calories.
- a second programmable counter 20 makes it possible to adapt this second delay T2 (of 4 ms for example) as a function of the applications and generates a confirmation signal Th_HEXCCD_latch.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1462404A FR3030152B1 (fr) | 2014-12-15 | 2014-12-15 | Procede de controle d'un dispositif de regulation d'un alternateur de vehicule automobile, dispositif de regulation et alternateur correspondants |
PCT/FR2015/053370 WO2016097531A1 (fr) | 2014-12-15 | 2015-12-08 | Procédé de contrôle d'un dispositif de régulation d'un alternateur de véhicule automobile, dispositif de régulation et alternateur correspondants |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3235120A1 true EP3235120A1 (fr) | 2017-10-25 |
Family
ID=53483854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15817978.8A Withdrawn EP3235120A1 (fr) | 2014-12-15 | 2015-12-08 | Procédé de contrôle d'un dispositif de régulation d'un alternateur de véhicule automobile, dispositif de régulation et alternateur correspondants |
Country Status (6)
Country | Link |
---|---|
US (1) | US10263551B2 (fr) |
EP (1) | EP3235120A1 (fr) |
JP (1) | JP2018507670A (fr) |
CN (1) | CN107005190A (fr) |
FR (1) | FR3030152B1 (fr) |
WO (1) | WO2016097531A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102485380B1 (ko) * | 2017-11-30 | 2023-01-05 | 현대자동차주식회사 | 차량용 알터네이터 제어 장치 및 그 방법 |
FR3076678B1 (fr) | 2018-01-09 | 2020-11-27 | Inteva Products France Sas | Circuit de comptage en cascade |
FR3076677B1 (fr) * | 2018-01-09 | 2020-11-27 | Inteva Products France Sas | Circuit de comptage en cascade comportant une detection de seuil d'ondulation variable |
CN112034384B (zh) * | 2020-08-05 | 2023-12-26 | 苏州汇川联合动力系统股份有限公司 | 电机系统短路的识别方法、设备和计算机可读存储介质 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4658200A (en) * | 1983-03-25 | 1987-04-14 | Mitsubishi Denki Kabushiki Kaisha | Protection circuit for voltage regulator of vehicle mounted generator |
FR2642580B1 (fr) | 1989-01-11 | 1991-05-17 | Equip Electr Moteur | Regulateur plurifonction a cadencement synchrone de l'alternateur |
JP3226689B2 (ja) * | 1993-12-24 | 2001-11-05 | 株式会社日立製作所 | 自己診断機能を備えた充電発電機 |
US6040676A (en) * | 1996-01-31 | 2000-03-21 | Parker-Hannifin Corporation | Passive electronic damping for step motor |
DE19649790A1 (de) * | 1996-12-02 | 1998-06-04 | Bosch Gmbh Robert | Vorrichtung zur Regelung der Ausgangsspannung eines Drehstromgenerators |
US6555993B2 (en) * | 2000-09-28 | 2003-04-29 | Denso Corporation | Voltage regulating system of a vehicle AC generator for charging a battery |
US6670792B1 (en) * | 2001-09-07 | 2003-12-30 | International Rectifier Corporation | Alternator regulation circuit having parallel field coil current re-circulation |
JP3835363B2 (ja) * | 2002-07-09 | 2006-10-18 | 株式会社デンソー | 車両用発電制御装置 |
JP3997969B2 (ja) * | 2002-12-10 | 2007-10-24 | 株式会社デンソー | 発電制御装置 |
US7521903B2 (en) * | 2005-08-08 | 2009-04-21 | Asbu Holdings, Llc | Monolithic alternator regulator with configurable regulation modes |
FR2910639B1 (fr) | 2006-12-20 | 2009-04-17 | Valeo Equip Electr Moteur | Procede et dispositif de detection de la defaillance du circuit d'excitation d'un alternateur polyphase |
-
2014
- 2014-12-15 FR FR1462404A patent/FR3030152B1/fr not_active Expired - Fee Related
-
2015
- 2015-12-08 CN CN201580066766.2A patent/CN107005190A/zh active Pending
- 2015-12-08 US US15/535,637 patent/US10263551B2/en not_active Expired - Fee Related
- 2015-12-08 JP JP2017531910A patent/JP2018507670A/ja active Pending
- 2015-12-08 EP EP15817978.8A patent/EP3235120A1/fr not_active Withdrawn
- 2015-12-08 WO PCT/FR2015/053370 patent/WO2016097531A1/fr active Application Filing
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2016097531A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2016097531A1 (fr) | 2016-06-23 |
US20170346428A1 (en) | 2017-11-30 |
FR3030152B1 (fr) | 2018-10-12 |
FR3030152A1 (fr) | 2016-06-17 |
CN107005190A (zh) | 2017-08-01 |
JP2018507670A (ja) | 2018-03-15 |
US10263551B2 (en) | 2019-04-16 |
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Inventor name: CHASSARD, PIERRE Inventor name: PASETTI, GIUSEPPE Inventor name: SCHMITT, ALEXANDRE Inventor name: TINFENA, FRANCESCO Inventor name: TISSERAND, PIERRE Inventor name: ARROU, THIBAULT |
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