CN113937976A - Hybrid excitation liquid cooling self-excitation type eddy current retarder and control method - Google Patents
Hybrid excitation liquid cooling self-excitation type eddy current retarder and control method Download PDFInfo
- Publication number
- CN113937976A CN113937976A CN202111281025.XA CN202111281025A CN113937976A CN 113937976 A CN113937976 A CN 113937976A CN 202111281025 A CN202111281025 A CN 202111281025A CN 113937976 A CN113937976 A CN 113937976A
- Authority
- CN
- China
- Prior art keywords
- retarder
- generator
- stator
- excitation
- rotor
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/28—Eddy-current braking
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/104—Structural association with clutches, brakes, gears, pulleys or mechanical starters with eddy-current brakes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- 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
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a hybrid excitation liquid cooling self-excitation type eddy current retarder, which comprises a retarder, wherein the retarder comprises a left braking unit, a left retarder stator of the left braking unit is provided with a plurality of left stator magnetic poles, a left stator magnetic shoe is arranged at the right end of the left stator magnetic pole, the left braking unit and a right braking unit are symmetrically arranged, the directions of the magnetic poles on the adjacent left stator magnetic shoes are opposite, and the directions of the magnetic poles of the left stator magnetic pole and the symmetric right stator magnetic pole are opposite; the gap internal fixation retarber left side permanent magnet between two adjacent left side stator magnetic shoes, the magnetic pole direction of left side permanent magnet sets up along circumference, the retarber rotor on be provided with the rotor of generator, the stator of generator is fixed on left side retarber stator and right side retarber stator, when the electric vortex retarber was out of work, magnetic field did not pass through the retarber rotor, the electric vortex retarber during operation, the magnetic field of the permanent magnet of both sides magnetic shoe and both sides all passes through the retarber rotor, improves brake performance.
Description
Technical Field
The invention belongs to the technical field of automobile auxiliary braking, and relates to a hybrid excitation liquid cooling self-excitation type eddy current retarder which can be used for carrying out auxiliary braking on an automobile by cutting magnetic lines generated by a coil and a permanent magnet through a rotor rotating at a high speed to generate eddy current braking torque according to an eddy current braking principle.
Background
The eddy current retarder is used as an automobile auxiliary braking device, when the retarder works, after direct current is introduced into a coil of the retarder, a magnetic field surrounds the coil and is established between a stator and a rotor, the rotor cuts magnetic lines of force emitted by the stator to generate eddy current, and a reverse magnetic field formed by the eddy current interacts with an original magnetic field to generate braking force, so that eddy current braking is realized.
The eddy current retarder has a simple structure and high working response speed, can act within 0.1-0.2 second, and can timely share part of braking power, but compared with a permanent magnet retarder, the eddy current retarder has lower braking power density and large power consumption. Although the permanent magnet retarder has high braking power density and basically does not consume electric energy, the permanent magnet retarder mainly depends on the air cylinder to push the magnet block to control the work of the retarder, the control structure is relatively complex, and the difficulty of control is increased due to the constant magnetic characteristic of the permanent magnet material. Therefore, the hybrid excitation liquid cooling self-excitation type eddy current retarder system is adopted, the advantages of the eddy current retarder and the permanent magnet retarder can be taken into consideration, the excellent braking performance is exerted, the energy is saved, and the volumes of the retarder and the generator are reduced. In the aspect of a heat dissipation mode, the heat dissipation mode of internal liquid cooling and external condenser circulation is adopted, and the problems of heat fading of the braking performance of the eddy current retarder and ablation of the excitation coil are solved. In the power supply mode, the permanent magnet synchronous generator in the retarder is used for supplying power to the exciting coil of the retarder, so that the additional energy consumption brought by the eddy current retarder during braking can be effectively avoided. In a control mode, the battery state SOC, the vehicle speed V and the speed reducer gear information G are continuously detected, meanwhile, the battery is controlled to be charged and discharged, and a part of high-power electric energy sent by the permanent magnet synchronous generator at a high speed is stored in the battery, so that the defect that the permanent magnet synchronous generator supplies power to a magnet exciting coil of the eddy current retarder at a low speed is overcome, and the self-excited eddy current retarder without external power supply is realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior retarder structure and provides a mixed excitation liquid cooling self-excitation type eddy current retarder, which is characterized in that the directions of magnetic fields generated by stator magnetic shoes of stator magnetic poles arranged at two sides of a retarder rotor are opposite, the directions of magnetic poles of adjacent stator magnetic shoes at the same side are opposite, permanent magnets are arranged between the adjacent stator magnetic shoes at the same side, the magnetic poles of the permanent magnets are arranged along the circumferential direction, the directions of magnetic poles of the adjacent permanent magnets at the same side are opposite, the directions of the magnetic poles of the permanent magnets at two sides symmetrical to the retarder rotor are opposite, when the eddy current retarder does not work, the magnetic field is not closed through the retarder rotor, when the eddy current retarder works, the magnetic fields generated by the magnetic shoes at two sides and the permanent magnets at two sides are closed through the retarder rotor, and simultaneously, a permanent magnet synchronous generator is arranged between the retarder rotor and the retarder stator, the electric energy generated by the generator is insufficient, the electric energy is provided by the battery, and the braking performance of the eddy current retarder is improved.
The invention is realized by the following scheme: a mixed excitation liquid cooling self-excitation type eddy current retarder comprises a retarder, a generator, an electric control unit and a battery, wherein the retarder comprises a left braking unit, a right braking unit and a retarder rotor 4, the left braking unit comprises a left retarder magnet exciting coil group 5, a left retarder stator 6 and a retarder left permanent magnet, the left retarder stator 6 is in a disc shape, a left stator cover plate 603 is arranged at the left end of the left retarder stator 6, a plurality of left stator magnetic poles 602 uniformly distributed along the circumferential direction are arranged at the edge of the left stator cover plate 603, the left stator magnetic poles 602 are horizontally arranged along the left and right direction, the left retarder magnet exciting coil group 5 is wound in the middle of the left stator magnetic poles 602, the right end of the left stator magnetic pole 602 is a left stator magnetic shoe 601, the left braking unit and the right braking unit are symmetrically arranged about the retarder rotor 4, the central hole of the retarder rotor 4 is fixed on the automobile transmission shaft 9, the magnetic poles generated on the adjacent left stator magnetic shoe 601 are opposite in direction, and the magnetic poles of the left stator magnetic pole 602 are opposite in direction to the right stator magnetic pole which is symmetrical about the retarder rotor 4;
the left retarder excitation coil group 5 and the right retarder excitation coil group 2 of the right brake unit are respectively connected with the electric control unit 12 through lines;
the retarder left permanent magnet is fixed in a gap between two adjacent left stator magnetic shoes 601, the magnetic pole direction of the left permanent magnet is arranged along the circumference of the left retarder stator 6, the magnetic poles of the two adjacent left permanent magnets are arranged oppositely, and the magnetic pole direction of the left permanent magnet is arranged oppositely to the magnetic pole direction of the retarder right permanent magnet 14 of the right braking unit which is symmetrical relative to the retarder rotor 4;
the retarder rotor 4 on be provided with the rotor of generator, the stator of generator is fixed on left side retarder stator 6 and right side retarder stator 1, the output of generator passes through the circuit and is connected with electrical control unit 12, electrical control unit 12 pass through the circuit and be connected with battery 13.
Preferably, the generator includes a left generator and a right generator, the left generator and the right generator are arranged symmetrically with respect to the retarder rotor 4, the left generator includes a left generator stator and a left generator permanent magnet 16, the retarder rotor 4 is in a symmetrical structure, a left annular cavity 401 extending leftwards is arranged in the middle of the retarder rotor 4, the left annular cavity 401 and the retarder rotor 4 are coaxially arranged, a plurality of left generator permanent magnets 16 are fixed on the inner side wall of the left annular cavity 401, the left generator permanent magnets 16 are uniformly distributed along the circumferential direction of the annular cavity 401, a left generator stator is arranged inside the annular cavity 401, the left generator stator is fixed on the left retarder stator 6, the right generator stator is fixed on the right retarder stator 1, the left generator winding of the left generator stator is connected with the electric control unit 12 through a circuit, the right generator winding of the right generator is connected with the electronic control unit 12 through a line.
Preferably, the left end and the right end of the connection housing 3 are respectively fixedly connected with the left end of the left retarder stator 6 and the right end of the right retarder stator 1 of the right braking unit, the connection housing 3 is provided with a cooling liquid outlet and an inlet, the cooling liquid outlet and the inlet are respectively connected with the inlet and the outlet of the condenser through pipelines, and the condenser is fixed on the frame.
Preferably, a gap between the left stator magnetic shoe 601 and the retarder rotor 4 in the axial direction, and a gap between the right stator magnetic shoe of the right brake unit and the retarder rotor 4 in the axial direction are both 1 mm.
Preferably, when the hybrid excitation liquid cooling self-excitation eddy current retarder does not brake, the electronic control unit 12 controls the left generator winding of the left generator and the right generator winding 15 of the right generator to be disconnected from the electronic control unit 12, and the left generator and the right generator do not supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2 of the retarder and the battery 13.
Preferably, the left retarder stator 6, the right retarder stator 1 of the right brake unit are fixed on the frame.
Preferably, the generator is a permanent magnet synchronous generator.
Preferably, the control method of the hybrid excitation liquid cooling self-excitation eddy current retarder includes the following steps:
step one, an electric control unit detects gear information G of a hybrid excitation liquid cooling self-excitation type eddy current retarder, and when G is smaller than or equal to a set gear G0;
when the speed V of the automobile transmission shaft 9 is less than or equal to the set speed V0, the electric control unit 12 controls the generator to supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2 of the right brake unit;
when the speed V of the automobile transmission shaft 9 is greater than or equal to the set speed V0, if the SOC of the battery 13 is less than or equal to 0.90, the electric control unit 12 controls the electric energy generated by the generator to supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2, and also charges the battery 13 at the same time, and if the SOC of the battery 13 is greater than 0.90, the electric control unit 12 controls the generator to supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2, and the battery 13 is not charged;
step two, when the gear information G is larger than the set gear G0:
when the speed V of the automobile transmission shaft 9 is less than or equal to the set speed V0 and the SOC of the battery 13 is greater than 0.30, the electric control unit 12 controls the generator and the battery 13 to simultaneously supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2; when the SOC of the battery 13 is less than 0.30, the electric control unit 12 controls the generator to supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2, and the battery 13 does not supply power;
when the speed V of the automobile transmission shaft 9 is greater than the set speed V0, the electronic control unit 12 controls the generator to supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2.
Preferably, when the hybrid excitation liquid-cooled self-excited eddy current retarder performs braking operation, the electronic control unit 12 detects the speed V of the automobile transmission shaft 9, the gear information G of the hybrid excitation liquid-cooled self-excited eddy current retarder and the SOC value of the battery 13 once every 0.1 second.
The hybrid excitation liquid cooling self-excitation type eddy current retarder and the control method have the following main advantages:
the technical scheme of the invention has a compact structure, the generator is arranged in the retarder and is connected with the electric control unit, the electric control unit is connected with the battery, the generator plays a braking role and supplies power to the excitation coil group of the mixed excitation liquid cooling self-excitation type eddy current retarder, the self-excitation braking mode is realized, redundant electric energy is stored in the battery, and when the gear of the mixed excitation liquid cooling self-excitation type eddy current retarder is high and the speed is low, the battery and the generator simultaneously supply power to the excitation coil group, so that the braking performance is improved; the left retarder stator of the left braking unit is provided with a plurality of left stator magnetic poles along the circumferential direction, the right end of each left stator magnetic pole is provided with a left stator magnetic shoe, the left braking unit and the right braking unit are arranged in bilateral symmetry, the magnetic pole directions on the adjacent left stator magnetic shoes are opposite, and the magnetic pole of the left stator magnetic shoe is opposite to the direction of the right stator magnetic shoe symmetrical about the retarder rotor; a retarder left permanent magnet is fixed in a gap between two adjacent left stator magnetic shoes, the magnetic pole direction of the left permanent magnet is arranged along the circumferential direction, the magnetic pole direction of the two left permanent magnets adjacent to the left side is opposite to that of the two left permanent magnets adjacent to the left side, the magnetic pole direction of the left permanent magnet is opposite to that of the side permanent magnet which is symmetrical relative to the retarder rotor, when the closed excitation liquid cooling self-excitation type eddy current retarder does not work, a magnetic field does not pass through the retarder rotor to form magnetic field closure, when the closed excitation liquid cooling self-excitation type eddy current retarder works, the magnetic fields of the magnetic shoes on two sides of the retarder rotor and the permanent magnets on two sides of the retarder rotor pass through the retarder rotor, and the braking performance is improved; the hybrid excitation liquid cooling self-excitation type eddy current retarder system adopts a heat dissipation mode of internal liquid cooling and external circulation, and avoids the phenomena of demagnetization of a left permanent magnet of the retarder and a right permanent magnet of the retarder and ablation of a field coil group of the left retarder and a field coil group of the right retarder.
Drawings
FIG. 1: the invention discloses a general structural schematic diagram of a hybrid excitation liquid cooling self-excitation type eddy current retarder.
FIG. 2: the invention discloses a schematic diagram of a magnetic pole arrangement structure of a permanent magnet on the right side of a retarder of a stator on the right side.
FIG. 3: the invention discloses a three-dimensional rotor diagram of a hybrid excitation liquid cooling self-excitation type eddy current retarder.
FIG. 4: the invention discloses a rotor front view of a hybrid excitation liquid cooling self-excitation type eddy current retarder.
FIG. 5: the invention relates to a magnetic circuit diagram of a hybrid excitation liquid cooling self-excitation type eddy current retarder during working.
FIG. 6: the invention discloses a magnetic circuit diagram of a mixed excitation liquid cooling self-excitation type eddy current retarder when the retarder does not work.
FIG. 7: the invention relates to a control flow chart of a hybrid excitation liquid cooling self-excitation type eddy current retarder.
Reference numerals: 1-right retarder stator, 2-right retarder field coil set, 3-connection housing, 4-retarder rotor, 5-left retarder field coil set, 6-left retarder stator, 601-left stator magnetic shoe, 602-left stator magnetic pole, 603-left stator cover plate, 7-left permanent magnet synchronous generator, 8-spline, 9-automobile transmission shaft, 10-dynamic seal, 11-right permanent magnet synchronous generator, 12-electronic control unit, 13-battery, 14-retarder right permanent magnet, 15-right generator winding, 16-left generator permanent magnet.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to fig. 1-7, and the present invention provides a hybrid excitation liquid cooling self-excitation eddy current retarder, which comprises a retarder, a generator, an electronic control unit, and a battery, wherein the retarder comprises a left braking unit, a right braking unit, a retarder rotor 4, and a connecting housing 3, the left braking unit comprises a left retarder excitation coil set 5, a left retarder stator 6, and a retarder left permanent magnet, the left retarder stator 6 is disc-shaped, a left stator cover plate 603 is disposed at the left end of the left retarder stator 6, a plurality of left stator poles 602 uniformly distributed along the circumferential direction are disposed at the edge of the left stator cover plate 603, the left stator poles 602 are horizontally disposed along the left-right direction, the left excitation coil set 5 is wound in the middle of the left stator poles 602, left side stator magnetic pole 602 right-hand member is left side stator magnetic shoe 601, left side braking unit and right side braking unit set up about retarder rotor 4 bilateral symmetry, the spline 8 that retarder rotor 4 centre bore set up through automotive transmission shaft 9 is fixed on automotive transmission shaft 9, left side stator magnetic pole 602 on the left side retarder excitation coil group 5 circular telegram back, the magnetic pole opposite direction that produces on adjacent left side stator magnetic pole 602 or left side stator magnetic shoe 601, and behind left side retarder excitation coil group 5 on the left side stator magnetic pole 602 and the right side retarder group 2 circular telegram of right side braking unit, the magnetic pole of left side stator magnetic pole 602 is opposite with the right side stator magnetic pole direction about retarder rotor 4 symmetry. The left retarder excitation coil group 5 and the right retarder excitation coil group 2 of the right brake unit are respectively connected with the electronic control unit 12 through lines.
The gap between two adjacent left stator magnetic shoes 601 is internally fixed with the retarder left permanent magnet, the magnetic pole direction of the left permanent magnet is perpendicular to the radial direction of the left retarder stator 6, namely the magnetic pole direction of the left permanent magnet is along the circumference of the left retarder stator 6, the magnetic poles of the two adjacent left permanent magnets are arranged oppositely, and the magnetic pole direction of the left permanent magnet is arranged oppositely to the magnetic pole direction of the retarder right permanent magnet 14 of the right braking unit symmetrical about the retarder rotor 4, namely the magnetic pole direction of the left permanent magnet is opposite to the magnetic pole direction of the retarder right permanent magnet 14 symmetrical about the retarder rotor 4.
The generator include left side generator, right side generator, left side generator, right side generator set up about retarder rotor 4 bilateral symmetry, the left side generator include left side generator stator, left side generator permanent magnet 16, retarder rotor 4 be bilateral symmetry's structure, retarder rotor 4 middle part is provided with left annular chamber 401 that stretches out left, left annular chamber 401 and retarder rotor 4 coaxial setting are fixed with a plurality of left side generator permanent magnet 16 on the inside wall of left annular chamber 401, left side generator permanent magnet 16 sets up along the circumferencial direction equipartition of annular chamber 401, annular chamber 401 inboard is provided with left side generator stator. The left generator stator is fixed on the left retarder stator 6, the left generator winding of the left generator stator is connected with the electric control unit 12 through a circuit, and the right generator winding of the right generator is connected with the electric control unit 12 through a circuit.
The electric control unit 12 is connected with a battery 13 through a line, and the battery 13 is fixed on the frame.
The generator is a permanent magnet synchronous generator.
The left retarder stator 6 and the right retarder stator 1 of the right braking unit are fixed on the frame.
The left end of connecting shell 3, right-hand member respectively fixed connection left side retarber stator 6 left end, the right side retarber stator 1's of right side brake unit right side right-hand member, connecting shell 3 on open and to have coolant liquid to go out, the entry, coolant liquid goes out, the entry passes through the tube coupling condenser, the condenser is fixed on the frame, the realization is to the cooling of mixed excitation liquid cooling self-excitation formula eddy current retarder.
The axial gap between the left stator magnetic shoe 601 and the retarder rotor 4 and the axial gap between the right stator magnetic shoe and the retarder rotor 4 are both 1 mm.
The driver controls the electric control unit 12 to adjust the exciting currents of the left retarder exciting coil group 5 and the right retarder exciting coil group 2 according to the road condition so as to control the braking torque of the mixed excitation liquid cooling self-excitation type eddy current retarder.
When the hybrid excitation liquid cooling self-excitation type eddy current retarder does not need braking, the electric control unit 12 controls the left generator winding of the left generator and the right generator winding 15 of the right generator to be disconnected with the electric control unit 12, and power can not be supplied to the left retarder excitation coil group 5 and the right retarder excitation coil group 2 of the retarder and the battery 13.
When the hybrid excitation liquid cooling self-excitation type eddy current retarder does not need braking, a magnetic field formed by the permanent magnet 14 on the right side of the retarder forms a closed magnetic circuit through the right stator magnetic shoe fixedly connected with one side of the retarder, the right stator magnetic pole, the right stator cover plate of the right retarder stator 1 and the right stator magnetic shoe fixedly connected with the other side of the permanent magnet 14 on the right side of the right stator magnetic pole, the magnetic field does not pass through the retarder rotor 4 at the moment, the magnetic field distribution of the magnetic field is as shown in fig. 5, and the hybrid excitation liquid cooling self-excitation type eddy current retarder can not generate braking torque at the moment.
When the hybrid excitation liquid cooling self-excitation type eddy current retarder brakes, the left generator winding of the left generator and the right generator winding 15 of the right generator are in access connection with the electric control unit 12 through the electric control unit 12, the left generator and the right generator generate electricity, the left retarder excitation coil group 5 and the right retarder excitation coil group 2 are electrified, a magnetic field passes through the first left stator magnetic pole 602, the first left stator magnetic shoe 601 corresponding to the first left stator magnetic pole 602, the left air gap, the retarder rotor 4, the right air gap, the first right stator magnetic shoe symmetrical to the retarder rotor 4 on the right side of the first left stator magnetic pole 602, the first right stator magnetic pole, the right stator cover plate, the second right stator magnetic pole adjacent to the first right stator magnetic pole, the right stator magnetic shoe corresponding to the second right stator magnetic pole, the left stator magnetic shoe, A second left stator magnetic shoe 601 of which the right air gap, the retarder rotor 4, the left air gap and the second right stator magnetic pole are symmetrical about the retarder rotor 4, a second left stator magnetic pole 602 corresponding to the second left stator magnetic shoe 601 and a left stator cover plate 603 form a closed magnetic circuit, and simultaneously, a magnetic field generated by a left permanent magnet on the retarder is forced to form a closed magnetic circuit through the first left stator magnetic shoe 601, the left air gap, the retarder rotor 4, the right air gap, a first right stator magnetic shoe, a right permanent magnet on the retarder right symmetrical about the retarder rotor 4, a second right stator magnetic shoe, the first right stator magnetic shoe, the right air gap, the retarder rotor 4, the left air gap and the second left stator magnetic shoe 601, the magnetic field distribution of the closed magnetic circuit is shown in FIG. 6, at the moment, the retarder rotor 4 cuts the first left stator magnetic shoe 601 and the first right stator magnetic shoe, The magnetic lines of force of the second right stator magnetic shoe and the second left stator magnetic shoe 601, thereby generating a braking torque.
The invention discloses a control method of a hybrid excitation liquid cooling self-excitation type eddy current retarder, which comprises the following steps of:
step one, an electric control unit detects gear information G of the hybrid excitation liquid cooling self-excitation type eddy current retarder, and when G is smaller than or equal to a set gear G0, for example, 2:
when the speed V of the automobile transmission shaft 9 is less than or equal to the set speed V0, for example, 20rpm, the power of the generator is low, and the exciting current of the retarder is low, so the electric control unit 12 controls the generator to supply power to the left retarder exciting coil group 5 and the right retarder exciting coil group 2 of the right brake unit, that is, to supply power to the retarder;
when the speed V of the automobile transmission shaft 9 is greater than or equal to the set speed V0, if the SOC of the battery 13 is less than or equal to 0.90, the power of the generator is high, and the exciting currents required by the left retarder exciting coil group 5 and the right retarder exciting coil group 2 are low, so that the electric control unit 12 controls the electric energy generated by the generator to supply power to the left retarder exciting coil group 5 and the right retarder exciting coil group 2, and also to charge the battery 13 at the same time, and if the SOC of the battery 13 is greater than 0.90, the electric control unit 12 controls the generator to supply power to the left retarder exciting coil group 5 and the right retarder exciting coil group 2, and does not charge the battery 13;
step two, when the gear information G is larger than the set gear G0:
when the speed V of the automobile transmission shaft 9 is less than or equal to the set speed V0 and the SOC of the battery 13 is greater than 0.30, the power of the generator is low, but the exciting coil groups 5 of the left retarder and the exciting coil groups 2 of the right retarder require large exciting currents, so the electric control unit 12 controls the generator and the battery 13 to simultaneously supply power to the exciting coil groups 5 of the left retarder and the exciting coil groups 2 of the right retarder; when the SOC of the battery 13 is less than 0.30, the electric control unit 12 controls the generator to supply power to the left retarder excitation coil group 5 and the right retarder excitation coil group 2, and the battery 13 does not supply power;
when the speed V of the automobile transmission shaft 9 is greater than the set speed V0, the power of the generator is large, but the exciting coil groups 5 of the left retarder and the exciting coil groups 2 of the right retarder need larger exciting currents, so the electric control unit 12 controls the generator to supply power to the exciting coil groups 5 of the left retarder and the exciting coil groups 2 of the right retarder.
When the hybrid excitation liquid cooling self-excitation type eddy current retarder performs braking work, namely the gear information G is a non-zero gear, the electronic control unit 12 detects the speed V of the automobile transmission shaft 9, the gear information G of the hybrid excitation liquid cooling self-excitation type eddy current retarder and the SOC value of the battery 13 once every 0.1 second.
Claims (9)
1. A hybrid excitation liquid cooling self-excitation type eddy current retarder is characterized in that: the retarder comprises a retarder, a generator, an electric control unit and a battery, wherein the retarder comprises a left braking unit, a right braking unit and a retarder rotor (4), the left braking unit comprises a left retarder magnet exciting coil group (5), a left retarder stator (6) and a retarder left permanent magnet, the left retarder stator (6) is disc-shaped, a left stator cover plate (603) is arranged at the left end of the left retarder stator (6), a plurality of left stator magnetic poles (602) uniformly distributed along the circumferential direction are arranged at the edge of the left stator cover plate (603), the left stator magnetic poles (602) are horizontally arranged along the left and right direction, the left retarder magnet exciting coil group (5) is wound in the middle of the left stator magnetic poles (602), the left stator magnetic shoes (601) are arranged at the right end of the left stator magnetic poles (602), and the left braking unit and the right braking unit are symmetrically arranged about the retarder rotor (4), the center hole of the retarder rotor (4) is fixed on an automobile transmission shaft (9), the magnetic poles generated on the adjacent left stator magnetic shoes (601) are opposite in direction, and the magnetic poles of the left stator magnetic poles (602) are opposite in direction to the right stator magnetic poles symmetrical about the retarder rotor (4);
the left retarder excitation coil group (5) and the right retarder excitation coil group (2) of the right brake unit are respectively connected with the electric control unit (12) through circuits;
the retarder left permanent magnet is fixed in a gap between every two adjacent left stator magnetic shoes (601), the magnetic pole direction of the left permanent magnet is arranged along the circumferential direction of the left retarder stator (6), the magnetic poles of the two adjacent left permanent magnets are arranged oppositely, and the magnetic pole direction of the left permanent magnet is arranged opposite to the magnetic pole direction of a retarder right permanent magnet (14) of a right braking unit which is symmetrical relative to the retarder rotor (4);
the retarder rotor (4) on be provided with the rotor of generator, the stator of generator is fixed on left side retarder stator (6) and right side retarder stator (1), the output of generator passes through the circuit and is connected with automatically controlled unit (12), automatically controlled unit (12) pass through the circuit and be connected with battery (13).
2. The hybrid excitation liquid cooling self-excitation type eddy current retarder according to claim 1, characterized in that: the generator comprises a left generator and a right generator, the left generator and the right generator are symmetrically arranged about a retarder rotor (4), the left generator comprises a left generator stator and a left generator permanent magnet (16), the retarder rotor (4) is in a bilaterally symmetrical structure, a left annular cavity (401) extending leftwards is arranged in the middle of the retarder rotor (4), the left annular cavity (401) and the retarder rotor (4) are coaxially arranged, a plurality of left generator permanent magnets (16) are fixed on the inner side wall of the left annular cavity (401), the left generator permanent magnets (16) are uniformly distributed along the circumferential direction of the annular cavity (401), the left generator stator is arranged on the inner side of the annular cavity (401), the left generator stator is fixed on the left retarder stator (6), and the right generator stator is fixed on the right retarder stator (1), the left generator winding of the left generator stator is connected with the electric control unit (12) through a circuit, and the right generator winding of the right generator is connected with the electric control unit (12) through a circuit.
3. The hybrid excitation liquid cooling self-excitation type eddy current retarder according to claim 1, characterized in that: connect left end, the right-hand member of shell (3) respectively the right-hand member of right side retarber stator (1) of fixed connection left side retarber stator (6) left end, right side brake unit, connect shell (3) on open and to have coolant liquid export and entry, the coolant liquid export passes through the entry and the export of pipeline connection condenser respectively with the entry, the condenser is fixed on the frame.
4. The hybrid excitation liquid cooling self-excitation type eddy current retarder according to claim 1, characterized in that: the axial clearance between the left stator magnetic shoe (601) and the retarder rotor (4) and the axial clearance between the right stator magnetic shoe of the right braking unit and the retarder rotor (4) are both 1 mm.
5. The hybrid excitation liquid cooling self-excitation type eddy current retarder according to claim 2, characterized in that: when the hybrid excitation liquid cooling self-excitation type eddy current retarder does not brake, the electric control unit (12) controls the left generator winding of the left generator and the right generator winding (15) of the right generator to be disconnected with the electric control unit (12), and the left generator and the right generator do not supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2) of the retarder and the battery (13).
6. The hybrid excitation liquid-cooled self-excited eddy current retarder according to any one of claims 1 to 5, wherein: the left retarder stator (6) and the right retarder stator (1) of the right braking unit are fixed on the frame.
7. The hybrid excitation liquid-cooled self-excited eddy current retarder according to any one of claims 1 to 5, wherein: the generator is a permanent magnet synchronous generator.
8. The control method of the hybrid excitation liquid cooling self-excitation type eddy current retarder according to claim 5, characterized in that: the brake control method comprises the following steps:
step one, an electric control unit detects gear information G of a hybrid excitation liquid cooling self-excitation type eddy current retarder, and when G is smaller than or equal to a set gear G0;
when the speed V of the automobile transmission shaft (9) is less than or equal to the set speed V0, the electric control unit (12) controls the generator to supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2) of the right brake unit;
when the speed V of the automobile transmission shaft (9) is greater than or equal to the set speed V0, if the SOC of the battery (13) is less than or equal to 0.90, the electric control unit (12) controls the electric energy generated by the generator to supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2) and also charge the battery (13), and if the SOC of the battery (13) is greater than 0.90, the electric control unit (12) controls the generator to supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2) and does not charge the battery (13);
step two, when the gear information G is larger than the set gear G0:
when the speed V of the automobile transmission shaft (9) is less than or equal to the set speed V0 and the SOC of the battery (13) is greater than 0.30, the electric control unit (12) controls the generator and the battery (13) to simultaneously supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2); when the SOC of the battery (13) is less than 0.30, the electric control unit (12) controls the generator to supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2), and the battery (13) does not supply power;
when the speed V of the automobile transmission shaft (9) is greater than the set speed V0, the electric control unit (12) controls the generator to supply power to the left retarder excitation coil group (5) and the right retarder excitation coil group (2).
9. The control method of the hybrid excitation liquid cooling self-excitation type eddy current retarder according to claim 8, characterized in that: when the hybrid excitation liquid cooling self-excitation type eddy current retarder performs braking work, the electronic control unit (12) detects the speed V of the automobile transmission shaft (9), the gear information G of the hybrid excitation liquid cooling self-excitation type eddy current retarder and the SOC value of the battery (13) once every 0.1 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111281025.XA CN113937976B (en) | 2021-11-01 | 2021-11-01 | Mixed excitation liquid cooling self-excitation type eddy current retarder and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111281025.XA CN113937976B (en) | 2021-11-01 | 2021-11-01 | Mixed excitation liquid cooling self-excitation type eddy current retarder and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113937976A true CN113937976A (en) | 2022-01-14 |
| CN113937976B CN113937976B (en) | 2023-07-21 |
Family
ID=79285229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111281025.XA Active CN113937976B (en) | 2021-11-01 | 2021-11-01 | Mixed excitation liquid cooling self-excitation type eddy current retarder and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113937976B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118264072A (en) * | 2024-05-31 | 2024-06-28 | 河南工学院 | Rotor excitation type eddy current retarder with redundant induction power supply device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478221A (en) * | 2007-12-11 | 2009-07-08 | 凯迈(洛阳)机电有限公司 | Current vortex speed buffer |
| CN101758778A (en) * | 2010-02-05 | 2010-06-30 | 江苏大学 | Current vortex retarder, generation/start integrated system and control method thereof |
| CN101867336A (en) * | 2010-06-09 | 2010-10-20 | 深圳市特尔佳科技股份有限公司 | Driving controller of electric eddy current brake and control method thereof |
| CN102299608A (en) * | 2011-07-12 | 2011-12-28 | 北京工业大学 | Liquid cooling auto-excitation-type eddy current retarder without electric brush structure |
| CN104600954A (en) * | 2015-01-06 | 2015-05-06 | 扬州安行机电科技有限公司 | Self-excitation type liquid-cooled eddy current retarder with dual-waterway structure |
| US20150251612A1 (en) * | 2012-09-12 | 2015-09-10 | Hino Motors, Ltd. | Vehicle, generator system, and generation method |
| CN113525340A (en) * | 2020-04-21 | 2021-10-22 | 乾碳国际公司 | ACE heavy truck oil-saving robot system |
-
2021
- 2021-11-01 CN CN202111281025.XA patent/CN113937976B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478221A (en) * | 2007-12-11 | 2009-07-08 | 凯迈(洛阳)机电有限公司 | Current vortex speed buffer |
| CN101758778A (en) * | 2010-02-05 | 2010-06-30 | 江苏大学 | Current vortex retarder, generation/start integrated system and control method thereof |
| CN101867336A (en) * | 2010-06-09 | 2010-10-20 | 深圳市特尔佳科技股份有限公司 | Driving controller of electric eddy current brake and control method thereof |
| CN102299608A (en) * | 2011-07-12 | 2011-12-28 | 北京工业大学 | Liquid cooling auto-excitation-type eddy current retarder without electric brush structure |
| US20130015026A1 (en) * | 2011-07-12 | 2013-01-17 | Beijing University Of Technology | Self-Excited Eddy Current Liquid-Cooled Retarder |
| US20150251612A1 (en) * | 2012-09-12 | 2015-09-10 | Hino Motors, Ltd. | Vehicle, generator system, and generation method |
| CN104600954A (en) * | 2015-01-06 | 2015-05-06 | 扬州安行机电科技有限公司 | Self-excitation type liquid-cooled eddy current retarder with dual-waterway structure |
| CN113525340A (en) * | 2020-04-21 | 2021-10-22 | 乾碳国际公司 | ACE heavy truck oil-saving robot system |
Non-Patent Citations (1)
| Title |
|---|
| 方茂功 , 胡俊: "电涡流缓速器的工作原理及检修", 汽车维修, no. 02 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118264072A (en) * | 2024-05-31 | 2024-06-28 | 河南工学院 | Rotor excitation type eddy current retarder with redundant induction power supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113937976B (en) | 2023-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102299608B (en) | Liquid cooling auto-excitation-type eddy current retarder without electric brush structure | |
| CN102874123B (en) | Disk type water cooling self-excited eddy current retarder | |
| CN108270301B (en) | Stator structure with winding end cooling structure and motor thereof | |
| Chen et al. | Research and development of in-wheel motor driving technology for electric vehicles | |
| CN106515406A (en) | Coaxial multi-motor driving system and vehicle comprising same | |
| CN101425737B (en) | Self-excitation type speed inhibitor having water cooling system | |
| CN113937976B (en) | Mixed excitation liquid cooling self-excitation type eddy current retarder and control method | |
| CN107846092A (en) | A kind of wheel hub electric motor of electric vehicle of integrated caliper | |
| CN103647378A (en) | A birotor wheel hub electric automobile motor | |
| Qi et al. | Design and research of axial flux permanent magnet motor for electric vehicle | |
| CN105790542B (en) | A kind of electromagnetic retarder with energy recovery function | |
| CN101789662A (en) | Dual-purpose motor driven by permanent magnet hybrid electric vehicle to generate electricity | |
| CN114056103A (en) | Self-excitation slow braking axle | |
| CN201304902Y (en) | Self-exciting retarder with water cooling system | |
| CN107117041B (en) | Eddy current liquid cooling retarder with electric energy recycling function | |
| CN106059131B (en) | A kind of mixed magnetic circuit driving motor | |
| Oh et al. | Optimal torque distribution of dual-motor all-wheel drive electric vehicles for maximizing motor energy efficiency | |
| CN105914975B (en) | A kind of birotor excitation combination retarder | |
| CN114421672B (en) | Rotor assembly, hybrid excitation motor and control method of hybrid excitation motor | |
| CN108011471B (en) | Direct-drive type double-hub motor system | |
| CN108448847A (en) | A kind of brushless bimorph transducer-double-rotor machine of radial magnetic field modulation system | |
| CN101877522A (en) | Mixed excitation generator with vacuum pump | |
| CN209938337U (en) | Double-stator double-coil self-excitation type internal liquid cooling retarder | |
| CN210120464U (en) | Wheel driving assembly of electric heavy-duty vehicle | |
| CN203554240U (en) | Double-rotor wheel hub electric vehicle motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |