CN107070325B - Direct current drive driving device and electrical equipment - Google Patents
Direct current drive driving device and electrical equipment Download PDFInfo
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- CN107070325B CN107070325B CN201710304708.XA CN201710304708A CN107070325B CN 107070325 B CN107070325 B CN 107070325B CN 201710304708 A CN201710304708 A CN 201710304708A CN 107070325 B CN107070325 B CN 107070325B
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- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A kind of electrical equipment the present invention provides direct current drive driving device and comprising the direct current drive driving device.Direct current drive driving device provided by the invention, comprising: direct current generator；DC power supply；Instruction sending part；Output transducer；Controller；Driver；Chopper, it is characterized by: wherein, direct current generator has 2j armature winding branches that are mutually indepedent and being made of m winding, 2j × m commutator segment being connect with winding, the 2j mutually independent brushes for being connected with chopper and being in contact with commutator segment, chopper is half-bridge chopper, chopper has j mutually independent copped wave units, DC power supply includes j mutually independent power supply units, each power supply unit connects one to one with a copped wave unit, each copped wave unit is correspondingly connected with a brush by current output line, and the armature winding branch connecting with the brush is powered, j and m is the positive integer not less than 2.
Description
Technical field
The invention belongs to direct current generator field, in particular to a kind of direct current drive driving device and include the direct current drive
The electrical equipment of driving device.
Background technique
With the increase of major city haze number of days and duration, country is more next to the exhaust emissions management of fuel oil equipment
It is stringenter；In addition, fuel oil equipment is forbidden to use in closed office work environment；In addition, this energy of petroleum is not
It is reproducible, exhaustion will be faced after decades.Therefore, the electrical equipment such as electric car, electri forklift etc. by electricity as the energy
Favor of the electrical equipment increasingly by manufacturer and consumer.It not only pollute it is small, can by renewable energy provide electricity
Can, and compared with fuel oil equipment, it also has, and energy utilization rate is high, structure is simple, noise is small, dynamic property is good and portability
The advantages that high.Under petroleum resources increasingly intense situation, electric driver is greatly developed, especially high-power electric drive dress
Such as electronic battlebus, electronic warship, Electric aircraft and electric drive aircraft carrier are set, there is far-reaching meaning for national defense safety
Justice.
Due to alternating current generator, especially simple, reliable for operation, light-weight, the cheap advantage of asynchronous machine structure, obtain
To being widely applied, still, alternating current generator there are detent torques small, starting current is very big, smooth speed control is poor, vibrates and makes an uproar
The disadvantages of sound is big and control algolithm is complicated.Even if using best control algolithm, in alternating current generator the influence of higher hamonic wave according to
So very big, the performance in starting, braking, speed regulation and low speed is all inferior to direct current generator.Therefore, to the performance requirement of electrical equipment
Very high occasion, such as domestic variable frequency air-conditioning, lifting elevator, electric car etc. are still favored in installation direct current drive driving
Device.
In battery powered electrical equipment such as electric car, battery is one of core component.Since current battery manufactures
The limitation of technical level, a battery cell are not still able to satisfy the actual requirement of electrical equipment in capacity, voltage and performance,
In order to meet the requirement of such electrical equipment high-energy electrical source of power, generally all the use of multiple battery cells is combined in series and parallel
Mode uses in groups, loads biggish power demand to meet.Pass through the output in parallel for increasing battery pack of multiple battery cells
Electric current increases the output voltage of battery pack by the series connection of multiple battery cells.
In electric car industry, it is about 45 that the battery energy storage system of pure electric vehicle passenger car, which generally has 96~110 section capacity,
The lithium-ion battery monomer of~80Ah；It is about 200 that the battery energy storage system of pure electric vehicle bus, which generally has 150~200 section capacity,
The lithium-ion battery monomer of~400Ah.Mining electric locomotive is essentially all to be powered by several groups of battery pack parallel connections, every group of battery
Group is again monomer series-connected groups of by tens of batteries.The domestic vehicle-mounted battery of electric car mostly uses greatly multiple battery cells first simultaneously
Join concatenated connection type again.
According to the requirement of national standard, the safe voltage of human body is 50 volts, according to the requirement of electrical equipment security performance, one
As preferentially select 48,36,24,12 volts of voltage class of national standard.And the power of motor of electric car equipment is typically all ten
Multikilowatt, if using single direct current generator, the rated current of each phase is all several hundred to several kiloamperes, starting and on
Electric current when slope is bigger.
As shown in Fig. 2, the operating current due to motor is very big, the output electric current of the series-parallel battery pack of large capacity also it is corresponding very
Greatly, generally several hundred to arrive several kiloamperes.The connection of connecting line, connecting line and battery pack between series-parallel battery pack and chopper
The connector of part, connecting line and chopper all will cause fever serious due to flowing through high current.This to the resistance of connecting line and
Insulation performance, the contact resistance of connector and insulation protection are proposed higher requirement.Meanwhile which increases be produced into
This, reduces the reliability and safety of system.
In the identical situation of battery cell quantity, the overall performance of series-parallel battery pack is less than the performance of multiple battery cells
Summation.Multiple battery cells in groups after, energy density, power, performance, durability and the safety of battery pack can all have certain journey
The decline of degree.And the generation of such case is that the factors such as manufacturing process, cell degradation and environment temperature are received due to battery
It influences, causes the inconsistent of the parameters such as the internal resistance of cell, voltage, capacity.Same size and the battery of model are in identical running environment
The inconsistency of the phenomenon that lower performance parameter has differences referred to as battery.For battery pack system, inconsistency is objective
It is existing, and during the charge and discharge cycles of battery pack, the depth of discharge of battery cell is different, and battery pack is most
The performance of big performance is often limited by the worst battery cell of performance, and battery pack whole volume is caused not play all.This
Also lead to the overcharge of percentage of batteries monomer or overdischarge, aggravate the performance deterioration of entire battery pack, may cause electricity when serious
The safety accidents such as the explosion or burning in pond.
In battery pack, the voltage inconsistency of battery cell can cause large effect to battery pack, influence battery
The many aspects such as capacity, performance, service life and the safety of group.In particular, the inconsistent battery of several voltages composes in parallel battery
After group, it is very easy to the battery charging low to voltage of the high battery of voltage occur, forms internal battery pack circulation, cause battery pack
Electricity meaninglessly wastes, and finally influences battery efficiency.
The battery balanced problem of battery parallel connection plays decisive role to the performance of battery pack, and directly influences electronic set
Standby overall performance.Batteries in parallel connection group current imbalance is influenced by many factors, for example, battery capacity, open-circuit voltage, internal resistance,
Initially, polarization etc..When battery consistency is preferable, parallel is to the capacity retention ratio of battery pack without too big shadow
It rings, but when occurring short slab battery in battery pack or unmatched battery being connected in parallel, parameter inconsistence problems are led
Current imbalance is caused, current imbalance can further result in the inconsistent of use condition again, and then make the cyclicity of battery pack
It can be deteriorated.In particular, the increase of batteries in parallel connection quantity can aggravate the influence of short slab battery.Some battery cell is unexpected in battery pack
Life termination often lead to allomeric function failure.
In battery use process, real time on-line monitoring is carried out to battery cell using battery management system, is analyzed and determined
And the method for attempting to eliminate or control battery inconsistency is known as cell balancing.But battery management system does not have
Managerial ability in parallel, it is difficult to which the energy flow of battery cell each parallel connection is managed.In addition, batteries in parallel connection quantity is more,
The difficulty of management is bigger.
To sum up, it has been seriously affected greatly as the battery balanced problem in the battery pack of one of electrical equipment core component
The continuation of the journey and performance of power electric equipment, and then affect including in electric vehicle, electric ship, Electric aircraft or even national defence
Electronic battlebus, electronic warship, Electric aircraft and electric drive aircraft carrier development.
Summary of the invention
The present invention be to solve the above-mentioned problems and carry out, and it is an object of the present invention to provide a kind of direct current drive driving device and
Electrical equipment comprising the direct current drive driving device.
<structure one>
The present invention provides a kind of direct current drive driving devices, are arranged in electrical equipment, for driving electrical equipment, wrap
Include: direct current generator has voltage rating and rated current；DC power supply has voltage corresponding with voltage rating, is used for
Direct current corresponding with rated current is provided；Instruction sending part sends the value phase of the revolving speed exported with direct current generator or torque
Corresponding command signal；Output transducer, the revolving speed of detection direct current generator output or torque, and send corresponding output feedback letter
Number；Controller calculates according to command signal and output feedback signal and exports operation control signal and motor control signal；It drives
Dynamic device enters working condition or halted state in the case where operation controls signal function, in the operating condition according to motor control signal
Generate driving signal；Direct current is converted to the controllable direct current of voltage under the action of driving signal and is supplied to by chopper
Direct current generator, it is characterised in that: wherein, direct current generator has 2j armature winding that are mutually indepedent and being made of m winding
Branch, 2j × m commutator segment connecting with winding, the 2j for being connected with chopper and being in contact with commutator segment mutually indepedent
Brush, chopper is half-bridge chopper, and chopper has j mutually independent copped wave units, and each copped wave unit contains one
A copped wave bridge arm and the freewheeling diode being connected in inverse parallel with the copped wave bridge arm, copped wave bridge arm contain two series connections
Power switch tube, each power switch tube is connected in inverse parallel with a freewheeling diode, DC power supply include j mutually solely
Vertical power supply unit, each power supply unit connect one to one with a copped wave unit, and each copped wave unit is exported by electric current
Line is correspondingly connected with a brush, and is powered to the armature winding branch connecting with the brush, and j and m are just not less than 2
Integer.
In direct current drive driving device provided by the invention, it can also have the following features: wherein, when drawing for brush
The rated current of outlet is I1, the rated current of direct current generator is INWhen, the number 2j of armature winding branch meets following conditions: j
> IN÷I1, j is the positive integer not less than 2.
In direct current drive driving device provided by the invention, it can also have the following features: wherein, armature winding
Connection type is lap winding, and the excitation mode of the main pole of direct current generator is permanent magnetism, separate excitation, series excitation, shunt excitation or compound excitation.
It in direct current drive driving device provided by the invention, can also have the following features: wherein, power supply unit is
The rectifier power source obtained after battery pack or the rectified filtering of AC power source, battery pack are made of at least one battery cell.
In direct current drive driving device provided by the invention, can also have the following features: wherein, chopper be by
At least one intelligent power module constitute or contain multiple power switch tubes, power switch tube be electric power field effect transistor
Pipe, gate level turn-off thyristor, integrated gate commutated thyristor, insulated gate bipolar transistor, electric power bipolar junction transistor and
Any one in door pole stream-exchanging thyristor.
In direct current drive driving device provided by the invention, it can also have the feature that, further includes: current sense
Device, wherein current sensor detects the line current value of the lead-out wire of brush, and sends corresponding current feedback signal；Controller
Operation control signal and motor control letter are calculated and exported according to command signal, current feedback signal and output feedback signal
Number.
<structure two>
Further, the present invention also provides a kind of electrical equipments containing above-mentioned direct current drive driving device.
The action and effect of invention
The direct current drive driving device and electrical equipment provided according to the present invention, since each copped wave unit contains one
Copped wave bridge arm and the freewheeling diode being connected in inverse parallel with the copped wave bridge arm, copped wave bridge arm contain two series connections
Power switch tube, each power switch tube are connected in inverse parallel with a freewheeling diode, and DC power supply includes j mutually indepedent
Power supply unit, each power supply unit connects one to one with a copped wave unit, and each copped wave unit passes through current output line
It is correspondingly connected with a brush, and the armature winding branch connecting with the brush is powered, so each power supply unit is defeated
Electric current is smaller for DC power supply total current out, the connecting line, connecting line between power supply unit and copped wave unit and electricity
The connector of the connector of source unit, connecting line and copped wave unit, the requirement to contact resistance and insulation is lower, not only reduces
The difficulty and cost of production also contribute to the reliability and safety of system.
The output electric current of each copped wave unit be it is mutually indepedent, non-interfering, the output electric current of chopper is all cuts
The linear superposition of the output electric current of wave unit, so the electric current of chopper can linearly be increased by increasing the number of copped wave unit
Add, not only remain the mature control algolithm of original chopper circuit and the mature manufacturing technology of direct current generator, without considering simultaneously
Join the requirement in equal Flow Technique to power switch tube consistency of performance, avoids and choose one carefully from a large amount of power switch tube
The consuming of a large amount of manpower and financial resources brought by the high switch element of cause property.
In addition, direct current drive driving device of the invention can break external monopolization and envelope for great current drive device
Lock, so that the direct current drive driving device can not only replace, pollution is big, the slow fuel oil hair low with energy utilization rate of starting speed
Motivation and be applied at present can not be using on the heavy-duty engine of motor, such as truck, bull-dozer, excavator heavy-duty engine etc.,
It can also be applied on the electronic battlebus, electronic warship and electric drive aircraft carrier that need more high current in military affairs, realize low
Press the production domesticization of the direct current drive driving device of high current.And compared with AC motor drives, system performance is more
It is superior.
Therefore, direct current drive driving device of the invention and electrical equipment have structure design simply, rationally, cost
The advantages that low, calorific value is small, stable working performance, safe and reliable, long service life.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the direct current drive driving device of the embodiment of the present invention；And Fig. 2 is the prior art
In heavy DC Vidacare corp electrical block diagram.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to be specifically addressed direct current drive driving device of the present invention and electrical equipment.
Illustrate a specific embodiment of the invention below in conjunction with attached drawing.
Direct current drive driving device 10 is arranged in electrical equipment such as electric tool, four-axle aircraft, electric car, electric ship
Oceangoing ship, commercial power electrical forklift, in electronic military equipment, for driving electrical equipment.
Fig. 1 is the electrical block diagram of the direct current drive driving device in the present embodiment.
As shown in Figure 1, direct current drive driving device 10 include direct current generator 11, it is DC power supply 12, instruction sending part 13, defeated
Sensor 14, controller 15, driver 18 and chopper 19 out.
Direct current generator 11 has voltage rating and rated current.Direct current generator 11 has main pole 111 and at least one
Armature 112.In embodiment, direct current generator has an armature 112.Armature 112 is the rotor of direct current generator.
Main pole 111 is that direct current generator 11 provides operating fields.The excitation mode of main pole is permanent magnetism, separate excitation, series excitation, simultaneously
It encourages or compound excitation.If main pole is separate excitation excitation mode, the excitation winding of separate excitation is individually power supply and control, with armature winding
It is independent.If main pole is shunt excitation excitation mode, the excitation winding of shunt excitation is by individual copped wave unit 191, power supply unit 121
It powers with driver 18.In the present embodiment, main pole 111 uses the excitation mode of series excitation.
Armature 112 includes 2j armature winding branch 1121,2j × m commutator segment (not shown) and 2 groups of brushes
Group 1122.
Armature winding branch 1121 is independently mounted on armature 112.Armature winding branch 1121 is to be wrapped in armature by m
On winding composed by, m be 2 or more positive integer.The connection type of winding is lap winding in armature winding branch 1121.?
When normal work, the electric current of all armature winding branches is independent of each other, independently of each other.
2 groups of brush groups 1122 are divided into two groups according to the polarity difference of main pole 111 corresponding to its spatial position, and respectively
Two groups of power supply lines of direct current generator are connected, and are in contact with the commutator segment of commutator.Each brush group includes j mutually indepedent
Brush.2j brush is evenly distributed on the commutator of direct current generator being made of commutator segment, with direct current generator main pole
Position is corresponding, and each brush can at least be in contact with a commutator segment.One group of brush therein is equal along the circumferencial direction of motor
Even distribution, the spatial position of another group of brush are mounted among different groups of adjacent two brushes.In the present embodiment, brush is adopted
With narrow brush, it is dimensioned slightly smaller than the size of commutator segment.In the present embodiment, each brush can connect at least one commutator segment
Touching.
DC power supply 12 has voltage corresponding with voltage rating, for providing direct current corresponding with rated current
Electricity.DC power supply 12 includes 2j mutually independent power supply units 121, each power supply unit and a bridge arm unit, an electricity
Brush connects one to one, and is powered to two armature winding branches connecting with the brush.Power supply unit 121 is battery pack
Or the rectification source obtained after the rectified filtering of AC power source, in the present embodiment, power supply unit 121 selects battery pack.
Instruction sending part 13 sends command signal corresponding with the value of revolving speed or torque that direct current generator 11 exports.
Output transducer 14 detects the revolving speed that direct current generator 11 exports or torque and exports corresponding output feedback signal.
Output feedback signal is received by controller 15.
Current sensor 20 detects the line current value of the brush lead-out wire of direct current generator 11, and it is anti-to export corresponding electric current
Feedback signal.Current feedback signal is received by controller 15.
Controller 15 is according to the command signal of instruction sending part 13, the output feedback signal of output transducer 14 and electric current
The current feedback signal of sensor 20 calculates the operation control signal 16 and motor control signal 17 of driver.
Driver 18 enters working condition in the case where operation control signal 16 controls, and generates drive according to motor control signal 17
The driving signal that dynamic chopper 19 works.
It is controllable that constant voltage DC electricity is converted to average voltage under the driving signal effect that driver 18 issues by chopper 19
Direct current and be supplied to direct current generator 11.In the present embodiment, chopper 19 is half-bridge chopper.
Chopper 19 has the copped wave unit 191 to connect one to one with j brush of one of brush group.Each cut
Two pole of afterflow that wave unit 191 is connected in inverse parallel containing a copped wave bridge arm 1911 and two with the copped wave bridge arm 1911
Pipe provides line current to corresponding brush jointly.
Copped wave bridge arm 1911 contains the upper bridge arm power switch tube and lower bridge arm power switch tube being connected in series with each other.?
That is 1 copped wave unit 191 that 2 power switch tubes and 2 diodes are constituted provides line electricity to the brush connecting with it
Stream.
Upper bridge arm power switch tube and lower bridge arm power switch tube are connected in inverse parallel a freewheeling diode respectively.On
Bridge arm power switch tube and lower bridge arm power switch tube predetermined maximum continuous work electric current having the same, it is power switch tube
An important parameter, only below this current value when, power switch tube is possible to stable operation, if operating current
More than this current value, power switch tube will be breakdown due to overcurrent, to damage.In view of various different operating environment
Influence, in general, the rated current of the lead-out wire of brush is less than this maximum continuous work electric current, is generally taken as maximum
0.5~0.8 times of continuous work electric current.
Upper bridge arm power switch tube or lower bridge arm power switch tube are the power switch tube of full-control type, and field of electric force can be used
Effect transistor, gate level turn-off thyristor, integrated gate commutated thyristor, insulated gate bipolar transistor, electric power are ambipolar
Any one in transistor and door pole stream-exchanging thyristor.In the present embodiment, which is electric power field effect transistor
Pipe.
When the rated current of the lead-out wire of brush is I1, the rated current of direct current generator 11 is INWhen, armature winding branch
1121 number 2j meets following conditions: j > IN÷I1, j is the positive integer not less than 2.
The action and effect of embodiment
According to direct current drive driving device provided in this embodiment and electrical equipment, since direct current generator has 2j phase
It is mutually independent and be made of m winding armature winding branch, connect with winding 2j × m commutator segment, be connected with chopper
The 2j mutually independent brushes for connecing and being in contact with commutator segment, chopper are half-bridge chopper, and chopper has j a mutually
Independent copped wave unit, the afterflow that each copped wave unit contains a copped wave bridge arm and is connected in inverse parallel with the copped wave bridge arm
Diode provides line current to the brush being correspondingly connected with by current output line, and copped wave bridge arm contains two series connections
Power switch tube, each power switch tube are connected in inverse parallel with a freewheeling diode, and DC power supply includes j mutually indepedent
Power supply unit, each power supply unit connects one to one with a copped wave unit, and to the armature winding connecting with the brush
Branch is powered, so the output electric current of each power supply unit is smaller for DC power supply total current, power supply unit
The connector of the connector of connecting line, connecting line and power supply unit between copped wave unit, connecting line and copped wave unit, docking
Electric shock resistance and insulation requirement it is lower, not only reduce the difficulty and cost of production, also contribute to system reliability and
Safety.
The output electric current of each copped wave unit be it is mutually indepedent, non-interfering, the output electric current of chopper is all cuts
The linear superposition of the output electric current of wave unit, so the electric current of chopper can linearly be increased by increasing the number of copped wave unit
Add, not only remain the mature control algolithm of original chopper circuit and the mature manufacturing technology of direct current generator, without considering simultaneously
Join the requirement in equal Flow Technique to power switch tube consistency of performance, avoids and choose one carefully from a large amount of power switch tube
The consuming of a large amount of manpower and financial resources brought by the high switch element of cause property.
In addition, the direct current drive driving device of the present embodiment can break the external monopolization for great current drive device and
Block, so that the direct current drive driving device can not only replace, pollution is big, starts the slow fuel oil low with energy utilization rate of speed
Engine and be applied at present can not be using on the heavy-duty engine of motor, such as truck, bull-dozer, excavator heavy-duty engine
Deng, additionally it is possible to applied on the electronic battlebus, electronic warship and electric drive aircraft carrier that need more high current in military affairs, realize
The production domesticization of the direct current drive driving device of low-voltage, high-current.And compared with AC motor drives, system performance is more
Add superior.
Therefore, the direct current drive driving device of the present embodiment and electrical equipment have structure design simply, rationally, cost
The advantages that low, calorific value is small, stable working performance, safe and reliable, long service life.
In addition, the battery cell in battery pack can not need parallel technology when power supply unit is battery pack, only adopt
It can be met the requirements with serial connection technology, eliminate the battery balanced problem generated after multiple battery cells parallel connections, also eliminate to subtract
The inconsistency of small multiple battery cells and the expense generated.In terms of power supply, by multiple relatively small capacity series-connected cell groups
Battery is reduced due to simultaneously in the identical situation of battery cell quantity instead of the series-parallel battery pack of single large capacity
The decaying of overall performance caused by joining, improves energy density, power, performance, durability and safety, can be electrical equipment
Continuation of the journey and performance, which provide, preferably to be ensured.
In addition, in the above-described embodiments, current sensor detects the line current value of the lead-out wire of brush, but as the present invention
Direct current drive driving device and electrical equipment, current sensor also can detect motor line current value.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (7)
1. a kind of direct current drive driving device is arranged in electrical equipment, for driving the electrical equipment, comprising:
Direct current generator has voltage rating and rated current；
DC power supply has voltage corresponding with the voltage rating, corresponding with the rated current straight for providing
Galvanic electricity；
Instruction sending part sends command signal corresponding with the value of revolving speed or torque that the direct current generator exports；
Output transducer, detects revolving speed or the torque of the direct current generator output, and sends corresponding output feedback signal；
Controller calculates according to described instruction signal and the output feedback signal and exports operation control signal and motor control
Signal processed；
Driver enters working condition or halted state in the case where the operation controls signal function, in the operating condition according to institute
It states motor control signal and generates driving signal；
The direct current is converted to the controllable direct current of voltage under the action of the driving signal and is supplied to institute by chopper
Direct current generator is stated,
It is characterized by:
Wherein, the direct current generator have 2j mutually indepedent and the armature winding branch that is made of m winding and it is described around
2j × m commutator segment of group connection, 2j for being connected with the chopper and being in contact with the commutator segment are mutually indepedent
Brush,
The chopper is half-bridge chopper, and the chopper has j mutually independent copped wave units,
The freewheeling diode that each copped wave unit contains a copped wave bridge arm and is connected in inverse parallel with the copped wave bridge arm,
Line current is provided to the brush being correspondingly connected with by current output line,
The copped wave bridge arm includes the power switch tube of two series connections, each power switch tube and an afterflow
Diode is connected in inverse parallel,
The DC power supply includes j mutually independent power supply units, each power supply unit and a copped wave unit
It connects one to one, and the armature winding branch connecting with the brush is powered,
The j and m is the positive integer not less than 2.
2. direct current drive driving device according to claim 1, it is characterised in that:
Wherein, when the rated current of the lead-out wire of the brush is I1, the rated current of the direct current generator is INWhen, institute
The number 2j for stating armature winding branch meets following conditions:
J > IN÷I1,
The j is the positive integer not less than 2.
3. direct current drive driving device according to claim 1, it is characterised in that:
Wherein, the connection type of the armature winding is lap winding,
The excitation mode of the main pole of the direct current generator is permanent magnetism, separate excitation, series excitation, shunt excitation or compound excitation.
4. direct current drive driving device according to claim 1, it is characterised in that:
Wherein, the power supply unit is the rectifier power source obtained after battery pack or the rectified filtering of AC power source,
The battery pack is made of at least one battery cell.
5. direct current drive driving device according to claim 1, it is characterised in that:
Wherein, the chopper be made of at least one intelligent power module or comprising multiple power switch tubes,
The power switch tube is electric power field effect transistor, gate level turn-off thyristor, integrated gate commutated thyristor, insulation
Any one in grid bipolar junction transistor, electric power bipolar junction transistor and door pole stream-exchanging thyristor.
6. direct current drive driving device according to claim 1, which is characterized in that further include:
Current sensor,
Wherein, the current sensor detects the line current value of the lead-out wire of the brush, and sends corresponding current feedback letter
Number；
The controller calculates according to described instruction signal, the current feedback signal and the output feedback signal and exports fortune
Row control signal and motor control signal.
7. a kind of electrical equipment characterized by comprising
Direct current drive driving device according to any one of claims 1 to 6.
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| US10622876B2 (en) | 2016-12-28 | 2020-04-14 | University Of Shanghai For Science And Technology | Electric drive apparatus, chopper, DC motor, and electric device |
| WO2020103954A1 (en) * | 2018-11-23 | 2020-05-28 | 上海理工大学 | Permanent magnet direct-current motor driving apparatus and electric equipment |
| WO2024113178A1 (en) * | 2022-11-29 | 2024-06-06 | Siemens Aktiengesellschaft | Driving apparatus for sic-mosfet device |
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| GB9615950D0 (en) * | 1996-07-30 | 1996-09-11 | Univ Warwick | Variable reluctance machines |
| AT500585B1 (en) * | 2004-07-14 | 2009-02-15 | Siemens Ag Oesterreich | CLEARING DEVICE FOR A RESERVOIRING RECTIFIER BRIDGE |
| CN100420145C (en) * | 2006-10-24 | 2008-09-17 | 北京航空航天大学 | A low-loss, high reliability integration magnetic levitation flywheel DC brushless motor control system |
| CN204089664U (en) * | 2014-11-07 | 2015-01-07 | 黑龙江省科学院科技孵化中心 | Based on the brushless direct current motor drive circuit of Buck converter |
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