CN104320042B - A kind of Multifunctional inverter that can be used for charging and driving - Google Patents
A kind of Multifunctional inverter that can be used for charging and driving Download PDFInfo
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- CN104320042B CN104320042B CN201410574666.8A CN201410574666A CN104320042B CN 104320042 B CN104320042 B CN 104320042B CN 201410574666 A CN201410574666 A CN 201410574666A CN 104320042 B CN104320042 B CN 104320042B
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Classifications
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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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of Multifunctional inverters that can be used for charging and driving, are related to the technical field of electricity of alternating current and the mutual inversion of phases of direct current.It is of the present invention that charging and the Multifunctional inverter of driving can be used for include direct current being transformed into the standard inverters of alternating current, common DC bus, logic control port, motor port, energy storage port, AC power port, DC power supply port, exchange and turn DC Module, the first DC to DC supplementary module, the second DC to DC supplementary module and third DC to DC supplementary module.The present invention is highly integrated, realizes on one device the institute of " alternating current turns direct current ", " direct current turns direct current " and " converting direct current into alternate current " is functional.
Description
Technical field
The present invention relates to the technical field of electricity of alternating current and the mutual inversion of phases of direct current.
Background technology
In fixedly mounted industrial equipment or use hybrid power and the mobile unit of pure electric vehicle（Vehicle, ship
Oceangoing ship, aircraft etc.）Field in, be required to use various forms of electric energy to convert：Alternating current turns direct current, direct current turns straight
Galvanic electricity and converting direct current into alternate current etc..
Generally it will come from various AC powers using rectifier（Public exchange power grid, alternating current generator etc.）Electric energy turn
It changes the direct current of equipment need of work into, realizes that alternating current turns the function of direct current；DC to DC converter is used for will be a kind of
Direct current is converted into another direct current or is mutually converted, and voltage class therebetween is different；Using inverter
Various converting direct-current power into alternating-current power are supplied into rear class equipment（Such as motor）It uses.
Industrial electromechanical equipment all relies on public exchange power grid or alternating current generator is powered, after incoming transport electricity,
Often also need to alternating current becoming direct current could to allow these industrial electromechanical equipments normal works, so when need using exchange
Turn direct current of the converter of direct current needed for by the alternating current conversion forming apparatus of input.In the prior art, all it is to use multiple points
Vertical element such as diode completes this rectification function based on the rectifier bridge module of diode.It is unidirectional using diode
The positive-negative half-cycle of alternating current is carried out rectification and translated by the principle of conducting respectively, is converted into pulsing and containing AC compounent
Direct current, then shaping is filtered by capacitor, become stable direct current.When former AC power is generating after over commutation
DC voltage and late-class circuit when mismatching, then need that first AC supply voltage is adjusted in suitable range, at this time one
As first using transformer first by the voltage elder generation boost or depressurization of the AC power to a certain range, then reuse aforementioned rectification
Alternating current after adjustment is converted into direct current to supply late-class circuit use by circuit.
Ac motor is needed at work using AC power, just needs to install additional when DC power supply is used to be powered
Direct current delivers the inverter of stream by converting direct-current power into alternating-current power, could be used in this way for ac motor.In existing scheme all
It is to be solved using the inverter of multiphase driving framework.By multiple（Usually 4,6,8,12 or more）Power electronic device is such as
Transistor, field-effect tube（That is each show his special prowess by MOSFET）, igbt（That is IGBT is managed）Deng composition inverter
Power drive unit.The circuit connecting mode of the driving unit is：First each two is connected, and each series branch is referred to as to drive
Bridge arm, the upper end of these driving bridge arms is the anode for being uniformly connected to referred to as dc bus, and lower end is to be all connected to direct current
The cathode of busbar, and dc bus is attached to external dc power in itself.Then, it is modulated based on pulse width（PWM）It is former
Reason, controls each power electronic device to open or close successively respectively, by the DC power conversion on dc bus into exchange
Electricity is generally attached to ac motor through each driving bridge arm intermediate node output.
Nearly all mobile unit（Such as various automobiles based on hybrid power or pure electric vehicle, ship）All carry energy storage
Device, these energy storage devices can be by various batteries（Such as lithium battery）Or capacitor（Such as ultracapacitor）Composition.These storages
Can unit be all only capable of the electric energy of storage DC form, and the operational voltage level of energy-storage units is restricted range, when it with
When direct current power source voltage range mismatches, then need converter using independent DC to DC power supply and energy-storage units it
Between carry out voltage conversion.
All it is the converter for turning direct current using independent exchange in existing technology（That is rectifier）, DC to DC
Converter and direct current deliver the inverter of stream, above-mentioned all requirements are completed in combination；Either using included rectification function
Direct current delivers the inverter of stream, and along with the converter of independent DC to DC, above-mentioned all requirements are completed in combination.But in this way
Shortcoming and inconvenience there are many doing：
Firstth, the converter of independent DC to DC can only realize decompression conversion or be only capable of boost conversion, that is, be only capable of list
To work；
Secondth, when the converter of above-mentioned independent DC to DC charges to energy-storage units, whole system is limited
Operating voltage range.For example, when using the converter of DC to DC of voltage-dropping type, the operating voltage of energy-storage units is only
It can be less than the former；When using the converter of DC to DC of booster type, the operating voltage of energy-storage units can only be above
The former；
The converter of third, all independent DC to DC, the cost of itself is higher, and is combined with other equipment
To also additional electrical connection cost be brought after use, further need exist for larger installation space and bring larger installation difficult
Degree.
Invention content
A kind of multi-functional inversion that can be used for charging and driving is proposed the purpose of the present invention is to solve the above problem
Device；This kind can be used for charging and the Multifunctional inverter of driving to be integrated with above-mentioned all functions well, realize " exchange
Electricity turns direct current ", the function of " direct current turns direct current " and " converting direct current into alternate current ".Present invention is especially suited for large-scale applications
In new energy industry, particularly hybrid vehicle, pure electric automobile and fuel cell electric vehicle field.
Technical scheme is as follows：
The present invention is a kind of Multifunctional inverter that can be used for charging and driving, including direct current is transformed into alternating current
Standard inverters, common DC bus, logic control port, motor port, energy storage port, AC power port, direct current
Source port, exchange turn DC Module, the first DC to DC supplementary module, the second DC to DC supplementary module and third direct current
Turn direct current supplementary module；
The standard inverters include control terminal, direct-flow input end and ac output end, and wherein ac output end has three
A ac output end：First exchange driving end, the second exchange driving end exchange driving end with third；
The common DC bus includes electrode line and negative line；
The logic control port is connected with the control terminal of standard inverters, and logic control port is by the electricity of low-tension supply
The signal of control signal, the signal that motor encoder is sent out and temperature sensor that energy, top level control device are sent out is transmitted to standard
Inverter；
Alternating current is sent to exchange by the AC power port and turns DC Module by AC power, and exchange turns DC Module
One end with third DC to DC supplementary module after switching S6 of output head anode be connected, third DC to DC auxiliary mould
The other end access third exchange driving end of block；The negative pole of output end that exchange turns DC Module is connected with one end of negative line, bears
The cathode of the other end access direct-flow input end of polar curve；
The output head anode that the output head anode of the DC power supply port turns DC Module with exchanging connects, DC power supply
The negative pole of output end that the negative pole of output end of port turns DC Module with exchanging connects, and DC power supply behind DC power supply port by obtaining
To voltage will with exchange turn DC Module AC power is carried out obtained voltage after rectification carry out it is in parallel；
The cathode of one end of the energy storage port turns DC Module with exchanging（8）Negative pole of output end be connected, energy storage port
The anode of the same end be connected after a switch S4 with one end of electrode line, the other end access direct-flow input end of electrode line is just
Pole, the anode at this end of energy storage port are also connected with switching one end of S5, and the other end for switching S5 is connected with two branches：One branch
Road exchange driving end with first through the first DC to DC supplementary module for switch S5 and is connected, and another article of branch is to switch S5 through the
Two DC to DC supplementary modules exchange driving end with second and are connected；The other end of energy storage port is used to connect rechargeable battery；
The first exchange driving end is connected after switching S1 with motor port, and the second exchange driving end is after switching S2
Also it is connected with motor port, third exchange driving end is also connected after switching S3 with motor port；Standard inverters are through electricity
Motivation is connected behind port with motor.
More preferably, the exchange turns to be parallel with a filter capacitor C1 between the output head anode of DC Module and cathode；Institute
One end that energy storage port is not connected with rechargeable battery is stated, a filter capacitor C2 is parallel between the positive electrode and negative electrode at this end.
More preferably, described exchange also is connected with the first precharge mould between the output head anode for turning DC Module and switch S6
Block, first pre-charge module are made of switch S7 and resistance R1 in parallel；The energy storage port not with rechargeable battery phase
One end even is also connected with the second pre-charge module, second pre-charge module between the anode at this end and switch S4, switch S5
It is made of switch S8 and resistance R2 in parallel.
More preferably, the first DC to DC supplementary module is inductance L1, and the second DC to DC supplementary module is electricity
Feel L2, third DC to DC supplementary module is inductance L3.
More preferably, the switch S1, switch S2 and switch S3 are linked switch, and switch S1, switch S2 and switch S3 are simultaneously
It opens or is closed at；The switch S5 and switch S6 is also linked switch, and switch S5 and switch S6 are opened or closed simultaneously simultaneously
It closes.
Beneficial effects of the present invention：
First, various AC powers can be converted into direct current by the present invention, such as by single-phase or three-phase public electric wire net friendship
Galvanic electricity is converted into direct current；Alternatively, the alternating current exported from alternating current generator is converted into direct current；
2nd, the present invention is using an equipment, realizes " alternating current turns direct current ", " direct current turns direct current " and " directly
Galvanic electricity delivers galvanic electricity " function, this is no longer needed for the converter for installing independent DC to DC, therefore, it is of the invention into
The cost of the known equipment using other technologies of this comparison will significantly reduce.Energy can be carried out with extremely low cost according to the present invention
The structure of management system；
3rd, in the present invention, multiple DC to DC supplementary modules can be built simultaneously --- first such as the present invention is straight
Circulate direct current supplementary module, the second DC to DC supplementary module and third DC to DC supplementary module, and these direct currents turn
All it is independently operable between DC Module；These independently operable DC to DC supplementary module matching standard inversions
Device is, it can be achieved that direct current turns the function of direct current；
4th, the present invention can realize energy bi-directional conversion, on the one hand can be converted into the electricity of DC power supply or energy-storage units
The direct current with higher voltage on common DC bus；On the other hand, pass through standard inverters and the first DC to DC
Supplementary module, the second DC to DC supplementary module, third DC to DC supplementary module cooperation can by public direct-current mother
The voltage of line is converted into different direct currents；
5th, the first DC to DC supplementary module, the second DC to DC supplementary module and the third direct current in the present invention
Turn these DC to DC supplementary modules of direct current supplementary module in electrical connection, without being concerned about their DC voltage level,
As long as the slightly less than voltage of common DC bus.The voltage difference is determined by standard inverters and these direct currents turn straight
The size of current of supplementary module is flowed, as long as common DC bus is higher than other DC voltage three ten-day periods of hot season.This is greatly extended
The power supply voltage range of the present invention, it means that the energy-storage units such as the chargeable voltage of more wide-voltage range can be used, be more easy to
In suitable device being selected to form energy-storage units according to applicable cases, to reach better cost performance.These energy-storage units include
Rechargeable battery and the device based on capacitor；
6th, direct current Electricity Functional is turned by the alternating current of the present invention and direct current turns direct current Electricity Functional, chargeable electricity can be given
The energy-storage units such as pond charge；
7th, the first DC to DC supplementary module, the second DC to DC supplementary module and third DC to DC auxiliary
These DC to DC supplementary module matching standard inverters of module also constitute active power factor compensation control function.Its
Principle is by the boost in voltage from AC power or DC power supply to higher common DC bus, then by public direct-current mother
Line is powered to rear class, is greatly improved the effective rate of utilization of power supply, is reduced the interference to power supply；
8th, the standard inverters in the present invention available for drive motor or establish a local ac power supply system.It will
It realizes above-mentioned function, does not need to change hardware.It can be integrated in the present invention it is therefore not necessary to carry out hardware modifications to the present invention
The exploitation of new system function.For using for the system of battery and capacitance as energy-storage units, this can be a kind of greatly wound
Newly；
9th, for the present invention for charging to rechargeable battery when energy-storage units charge, workable power supply is very wide
It is general, Domestic single-phase AC power, three-phase alternating-current supply, battery, photovoltaic system etc. can be used.During using AC power, without making
AC power can be converted into the voltage needed for energy-storage units with boost or depressurization transformer；For energy-storage units, permit
Perhaps its voltage can be higher or lower than the voltage after AC power rectification, and unique restrictive condition is that slightly lower than public direct-current is female
Line voltage.In this way, it is even possible that by the use of low tension battery as charging power supply.This is for hybrid power and pure electricity
For electrical automobile, great advantage is had, when high voltage power battery capacity deficiency, vehicle-mounted 12V or 24V accumulators can be used
As backup power supply in emergency circumstances.For example, hybrid power and pure electric automobile are usually to use electric-liquid type or electric system
Dynamic system, is both used to that motor drives oil pump or air pump provides power needed for braking, when being in an emergency simultaneously
And during high voltage power battery capacity deficiency, danger can be then easy to cause because can not be handled again during out of power using traditional technology
It happens, but low tension battery can be switched to motor using the present invention, so as to fulfill emergency braking.Equally
Ground can also apply the present invention to use emergent backup power supply of the 12V or 24V accumulators as Vehicular turn force aid system, realize
The power steering function of vehicle in case of emergency.
Description of the drawings
Fig. 1 is the functional block diagram of standard inverters；
Fig. 2 is the principle of the present invention block diagram；
Fig. 3 is the more excellent circuit diagram that exchange turns DC Module；
Fig. 4 is equivalent circuit diagram of the invention under charge mode；
Fig. 5 is equivalent circuit diagram of the invention under drive mode.
Specific embodiment
In order to which the present invention is better described, it is described further in conjunction with embodiment and attached drawing.
As shown in Figure 1, the functional block diagram for standard inverters 1 according to the present invention.The major function of standard inverters 1
It is that the direct current that high direct voltage input interface receives is changed into after alternating current to export by ac high-voltage output interface.Low pressure
Power supply and signaling interface are used for the control signal for sending out the electric energy of low-tension supply, top level control device, motor encoder is sent out
Signal and the signal of temperature sensor be transmitted to the main control chips of standard inverters 1.The signal and temperature that motor encoder is sent out
The signal for spending sensor is the coherent signal when drive motor of the present invention.Low-tension supply is used to provide work electricity to the present invention
Pressure.The control signal that top level control device is sent out is used to carry out the present invention relevant control, the PWM that main control chip is such as controlled to send out
Signal, and then the alternating current that ac high-voltage output interface can be controlled to export.
As shown in Fig. 2, the present invention is a kind of Multifunctional inverter that can be used for charging and driving, including direct current is turned
Become the standard inverters 1 of alternating current, common DC bus 2, logic control port 3, motor port 4, energy storage port 5, hand over
Galvanic electricity source port 6, DC power supply port 7, exchange turn DC Module 8, the first DC to DC supplementary module 9.1, the second direct current
Turn direct current supplementary module 9.2 and third DC to DC supplementary module 9.3.
The standard inverters 1 that direct current is transformed into alternating current include three-phase or more phase drive axle.These three-phases or more
Phase drive axle can be made of multiple discrete semiconductor power devices or the module with identical function.
Wherein, logic control port 3 is used for the control signal, electronic for sending out the electric energy of low-tension supply, top level control device
The signal and the signal of temperature sensor that machine encoder is sent out are transmitted to standard inverters 1, the signal that motor encoder is sent out and
The signal of temperature sensor is the coherent signal when drive motor of the present invention.Specifically, top level control device can be used various
Digital communication mode such as RS232 serial ports, USB, RS485, CAN, Profibus etc., analog signal such as voltage or electric current, number
Pulse, the combination of switching value such as 24V or relay passive contact etc. or aforementioned signal, controls the present invention.When this hair
During bright drive motor, it is also necessary to receive the signal and temperature sensor that motor encoder sends out by logic control port 3
Signal.
Motor port 4 needs driven motor for connecting.
Energy storage port 5 is used to carry out charge and discharge to energy-storage units such as rechargeable batteries.
For connecting AC power to carry out charge function, DC power supply port 7 is used to connect direct current for AC power port 6
Power supply is to carry out charge function.Used AC power includes single phase alternating current power supply and three-phase alternating-current supply.Wherein, blow-up
Galvanic electricity source includes single-phase public electric wire net and single-phase alternator；Three-phase alternating-current supply includes three-phase public electric wire net and three-phase alternating current
Generator.DC power supply includes using battery, photovoltaic generating system and comes from the rectified rear formation of aforementioned AC power
Direct current.
Exchange turns DC Module 8 for converting alternating current to direct current；First DC to DC supplementary module 9.1,
Two DC to DC supplementary modules 9.2 and these DC to DC supplementary modules cooperation of third DC to DC supplementary module 9.3
Standard inverters 1, for direct current progress boost or depressurization to be converted into direct current.First DC to DC supplementary module 9.1,
Two DC to DC supplementary modules 9.2 and these DC to DC supplementary modules cooperation of third DC to DC supplementary module 9.3
Standard inverters 1 realize the function of the converter of DC to DC, according to the situation of realization, can decrease or increase again several straight
Circulate direct current supplementary module, and the present invention is by taking 3 DC to DC supplementary modules as an example, i.e. the first DC to DC supplementary module
9.1st, the second DC to DC supplementary module 9.2 and third DC to DC supplementary module 9.3.
Standard inverters 1 include control terminal 1.1, direct-flow input end 1.2 and ac output end 1.3, wherein ac output end
There are three ac output ends for 1.3 tools：First exchange driving end 1.3a, the second exchange driving end 1.3b exchange driving end with third
1.3c。
Common DC bus 2 includes electrode line 2.1 and negative line 2.2.1 and first DC to DC of standard inverters assists
This 3 DC to DC of module 9.1, the second DC to DC supplementary module 9.2 and third DC to DC supplementary module 9.3 are auxiliary
Module is helped, electric energy is aggregated into common DC bus 2.
Logic control port 3 is connected with the control terminal 1.1 of standard inverters 1, and logic control port 3 is by the electricity of low-tension supply
The signal of control signal, the signal that motor encoder is sent out and temperature sensor that energy, top level control device are sent out is transmitted to standard
Inverter 1.
Alternating current is sent to exchange by AC power port 6 and turns DC Module 8 by AC power, and exchange turns DC Module 8
One end with third DC to DC supplementary module 9.3 after switching S6 of output head anode be connected, third DC to DC is auxiliary
The other end of module 9.3 is helped to access third exchange driving end 1.3c；Exchange turns the negative pole of output end and negative line of DC Module 8
2.2 one end is connected, the cathode of the other end access direct-flow input end 1.2 of negative line 2.2.
The output head anode that the output head anode of DC power supply port 7 turns DC Module 8 with exchanging connects, DC power supply terminal
The negative pole of output end that the negative pole of output end of mouth 7 turns DC Module 8 with exchanging connects, after DC power supply is by DC power supply port 7
Obtained voltage will turn obtained voltage after DC Module 8 carries out rectification to AC power and be overlapped with exchanging.
AC power and the upper voltage limit of DC power supply are the voltage slightly less than on common DC bus 2, lower limit almost without
Limitation, it might even be possible to using 12V or 24V power supplys, without using step-up transformer.
The cathode of one end of energy storage port 5 is connected with negative line 2.2 and exchanges the one end for turning DC Module 8 and be connected, energy storage
The anode of the same end of port 5 is connected after a switch S4 with one end of electrode line 2.1, and the other end access of electrode line 2.1 is straight
The anode of input terminal 1.2 is flowed, the anode at this end of energy storage port 5 is also connected with switching one end of S5, and the other end for switching S5 connects
There are two branches：One branch exchanges driving end 1.3a phases through the first DC to DC supplementary module 9.1 for switch S5 with first
Even, another branch exchanges driving end 1.3b with second through the second DC to DC supplementary module 9.2 for switch S5 and is connected；Energy storage
The other end of port 5 is used to connect rechargeable battery.Wherein, exchange turn DC Module 8 can be by multiple discrete diodes, crystal
Pipe, silicon-controlled, thyristor combination are formed using the single component module with identical rectification function.Exchange turns DC Module
8 one specific electrical equipment connections, a typical bridge rectifier being made of discrete diode as shown in Figure 3.Separately
Outside, the energy-storage units such as the rechargeable battery connected due to energy storage port 5 can be charged and discharged, in order to improve through electric current
Ability, the first DC to DC supplementary module 9.1, the second DC to DC supplementary module 9.2 as previously described as be attached.
In addition, the first DC to DC supplementary module 9.1, the second DC to DC supplementary module 9.2 and third direct current turn
One more excellent implementation of direct current supplementary module 9.3 is exactly, and the first DC to DC supplementary module 9.1 is inductance L1, and second
DC to DC supplementary module 9.2 is inductance L2, and third DC to DC supplementary module 9.3 is inductance L3.First direct current turns straight
Supplementary module 9.1, the second DC to DC supplementary module 9.2 and 9.3 these direct currents of third DC to DC supplementary module are flowed to turn
Direct current, it can be achieved that is converted into the function of direct current by direct current supplementary module matching standard inverter 1.These directly turn direct current auxiliary
Module can arbitrarily combine to expand the function of electric current.
First exchange driving end 1.3a is connected after switching S1 with motor port 4, and the second exchange driving end 1.3b is through opening
Also it is connected after closing S2 with motor port 4, third exchange driving end 1.3c is also connected after switching S3 with motor port 4；Mark
Quasi- inverter 1 is connected behind motor port 4 with motor.
In order to the Alternating Component in Rectified alternating current is filtered, exchange turn DC Module 8 output head anode and cathode it
Between be parallel with a filter capacitor C1；One end that energy storage port 5 is not connected with rechargeable battery, between the positive electrode and negative electrode at this end simultaneously
It is associated with a filter capacitor C2.
Immediate current impacts in order to prevent, and exchange turns also to be connected with the between the output head anode of DC Module 8 and switch S6
One pre-charge module, this first pre-charge module are made of switch S7 and resistance R1 in parallel；Energy storage port 5 not with chargeable electricity
One end that pond is connected also is connected with the second pre-charge module between the anode at this end and switch S4, switch S5, this second precharge mould
Block is made of switch S8 and resistance R2 in parallel.
In addition, to make the operation of the present invention in use more simple and convenient, switch S1, switch S2 and switch S3 are
Linked switch, switch S1, switch S2 and switch S3 are opened or are closed at simultaneously；It is also linked switch to switch S5 and switch S6,
Switch S5 and switch S6 are opened or are closed at simultaneously.
Switch S1, switch S2, switch S3, switch S4, switch S5, switch S6, switch S7 and switch S8, can by contactor,
The device that relay, silicon-controlled, thyristor etc. have switching characteristic is formed.
In conclusion the present invention on the basis of standard inverters 1, is such as switched, inductance by increasing several electrical equipments
Device, capacitor, resistor, diode or rectifier bridge etc. constitute of the present invention available for charging and driving multi-functional
Inverter.
The AC power for coming from AC power port 6 turns DC Module 8 is converted into power supply unit first by exchange
Direct current.Come from the DC power supply of DC power supply port 7, the output terminal of DC Module 8 can be turned with incoming transport, be collectively formed
The direct current U of power supply unitDC1。
As previously mentioned, dash current when being powered on to reduce, devises what is formed respectively by switching S7 and resistor R1
First precharge unit and the second precharge unit formed by switching S8 and resistor R2, the effect of the first precharge unit
In the direct current U of power supply unitDC1, the second precharge unit acts on the direct current U of energy-storage unitsDC2。
By taking the first precharge unit as an example, when just powering on, switch S7 is to disconnect, and comes from UDC1Dash current pass through
Resistor R1 is transferred to late-class circuit, which is limited by resistor R1 so that dash current will not be to other
Circuit impacts.After late-class circuit is gradually stablized, by closure switch S7, it is shorted out resistor R1 so that all electric currents
Resistor R1 is no longer flow through by switching, resistor R1 is avoided to cross cause thermal damage due to long-time is powered, is also avoided simultaneously
Unnecessary energy loss.Similarly, the second precharge unit is also to have same operation principle.
Direct current UDC1And UDC2First respectively after precharge unit, then filtered capacitance C1 and C2 filters out friendship respectively
Flow component resupplies late-class circuit work.
First DC to DC supplementary module 9.1, the second DC to DC supplementary module 9.2 and third DC to DC are auxiliary
9.3 matching standard inverter 1 of module is helped to realize that the operation principle that direct current is converted into direct current is, passes through logic control port
3 control power electronic device such as field-effect tube or insulated gate transistor inside standard inverters 1 etc. to be opened or closed
Disconnected, inductor L1, L2 and L3 meeting energy storage simultaneously generate voltage, which will be superimposed the electricity from power supply unit or energy-storage units respectively
Press UDC1And UDC2, and the voltage U being connected on common DC bus 2DC3.It in other words, can be by relatively low power supply unit or storage
The direct current U of energy unitDC1And UDC2It is converted into voltage U on higher common DC bus 2DC3；It changes an angle to say, can also incite somebody to action
Voltage U on common DC bus 2DC3It is converted into the direct current U of different voltagesDC1And UDC2。
For the present invention in the starting stage, the energy-storage units such as common DC bus 2 and rechargeable battery are no electric energy, i.e.,
Voltage UDC2And UDC3It is zero.At this point, the present invention can be allowed to open charge mode, carried out to common DC bus 2 and rechargeable battery
Charging.S1, S2, S3 and S4 are switched by disconnection to cut off the present invention and the connection of motor；Switch S5 and S6 is reclosed, to make
Rechargeable battery is connected with the present invention, AC power and/or DC power supply to be made to be connected with the present invention.It is electric when connecting external communication
Behind source or DC power supply, the first precharge unit --- being formed by switching S7 and resistance R1 --- can be first passed through and give public direct-current mother
Line 2 charges, and works as UDC3It is raised slowly to close to UDC1Afterwards, it recloses switch S7 and completes pre-charge process；Then, third direct current turns straight
Stream 9.3 matching standard inverter 1 of supplementary module continues to charge to common DC bus 2, causes UDC3Continue to rise, until reaching
Default voltage；Then, closure switch S8 bypasses the second precharge unit, then, the first DC to DC supplementary module
9.1st, 9.2 matching standard inverter 1 of the second DC to DC supplementary module charges to rechargeable battery.In this way, come from the external world
Direct current U is obtained after AC power and/or DC power supply simple processDC1, then third DC to DC supplementary module 9.3 with
Standard inverters 1 coordinate direct current UDC1The voltage U being converted on higher common DC bus 2DC3, then the first direct current turn
Direct current supplementary module 9.1,9.2 matching standard inverter 1 of the second DC to DC supplementary module are by the electricity on common DC bus 2
Press UDC3The voltage U being converted on energy storage port 5DC2, the voltage U on energy storage port 5DC2It charges to rechargeable battery.When can
After rechargeable battery is fully charged, standard of closure inverter 1 and the first DC to DC supplementary module 9.1, the second DC to DC are auxiliary
The cooperation of module 9.2, third DC to DC supplementary module 9.3 is helped, terminates charging process.
As shown in figure 4, for equivalent circuit diagram of the invention under charge mode.Related letter is received by logic control port 3
Number be input to the control terminal 1.1 of standard inverters 1, make transistor Q1, Q2, Q3, Q4, Q5 and Q6 base stage receive it is relevant
Pwm signal controls the switch of transistor Q1, Q2, Q3, Q4, Q5 and Q6 or closure, so as to fulfill direct current by pwm signal
Electricity turns the functions such as direct current.
When the present invention is used for drive motor, need first to switch to drive mode.S5, S6 and S7 are switched by disconnection,
Cut off the power supply of AC power and DC power supply to the present invention.Switch S4 is reclosed, rechargeable battery is inputted through energy storage port 5
Direct current UDC2It --- is formed through the second precharge unit by switching S8 and resistance R2 --- and is connected to common DC bus 2
Voltage UDC3.Treat UDC3It moves closer in voltage UDC2Afterwards, it recloses switch S8 and bypasses the second precharge unit.Then, closure is opened
S1, S2 and S3 are closed, the three-phase windings of motor are connected to three ac output ends of standard inverters 1：First exchange driving
End 1.3a, the second exchange driving end 1.3b exchange driving end 1.3c with third.Then it can start the direct current of standard inverters 1
Electricity delivers galvanic electricity function, by the voltage U on common DC bus 2DC3Alternating current supply motor is converted into, makes motor normal
Operating.
Fig. 5 is equivalent circuit diagram of the invention under drive mode.Coherent signal is received by logic control port 3 to be input to
The control terminal 1.1 of standard inverters 1 so that standard inverters 1 generate corresponding pwm signal in inside, by pwm signal come
The switch or closure of transistor Q1, Q2, Q3, Q4, Q5 and Q6 are controlled, so as to fulfill functions such as converting direct current into alternate current.
From the foregoing, it will be observed that the present invention realizes drive motor and the work(to charge to energy-storage units such as rechargeable batteries respectively
Energy.The present invention is on the basis of standard inverters 1, by increasing several electrical equipments such as switch, electricity during design
Sensor, capacitor, resistor, diode or rectifier bridge etc. so as to constitute the present invention, make the present invention real in same equipment
Show that alternating current turns direct current, direct current turns direct current and the function of converting direct current into alternate current, wherein, direct current turns direct current,
It is that a kind of direct current is converted into another direct current, in the present invention, as long as the two voltage is different, there is minimum electricity
Pressure difference.
The Multifunctional inverter of the present invention that can be used for charging and driving can provide power factor compensation control work(
Can, motor driver can be used as, charger can be used as to charge for battery, it can be as the energy-storage system of energy type or power-type
Bidirectional energy conversion equipment can be used as and be based on as the bidirectional energy conversion equipment of the energy-storage system based on ultracapacitor
The bidirectional energy conversion equipment of the energy-storage system of other capacitors.The present invention can be powered by following power supplys：By internal combustion engine, hair
The power supply that motor, rectifier combination are formed, the power supply being made of steam turbine, generator, rectifier combination, fuel cell are made
For power supply, photovoltaic system is as power supply, and vehicle-mounted 12V or 24V accumulators are as power supply.
Purposes of the present invention is very extensive, available for hybrid power and pure electric vehicle system, available for car, truck, logistics fortune
Defeated vehicle or bus, available for multipurpose tool vehicle such as town road sweeper and grass-cutting vehicle etc., available for marine vehicle,
Available for engineering machinery such as excavator, bull-dozer and mixed mud blender etc., available for refrigeration equipment.
Claims (2)
1. a kind of Multifunctional inverter that can be used for charging and driving, the standard inverters including direct current to be transformed into alternating current
(1), it is characterised in that further include：Common DC bus (2), logic control port (3), motor port (4), energy storage port
(5), AC power port (6), DC power supply port (7), exchange turn DC Module (8), the first DC to DC supplementary module
(9.1), the second DC to DC supplementary module (9.2) and third DC to DC supplementary module (9.3)；
The standard inverters (1) include control terminal (1.1), direct-flow input end (1.2) and ac output end (1.3), wherein handing over
Flowing output terminal (1.3) tool, there are three ac output ends：First exchange driving end (1.3a), the second exchange driving end (1.3b) and the
Three exchange drivings end (1.3c)；The common DC bus (2) includes electrode line (2.1) and negative line (2.2)；The logic control
Port (3) processed is connected with the control terminal (1.1) of standard inverters (1), logic control port (3) by the electric energy of low-tension supply, on
The signal of control signal, the signal that motor encoder is sent out and temperature sensor that layer controller is sent out is transmitted to standard inverters
(1)；Alternating current is sent to exchange by the AC power port (6) and turns DC Module (8) by AC power, and exchange turns direct current mould
The one end of the output head anode of block (8) with third DC to DC supplementary module (9.3) after switching S6 is connected, and third direct current turns
Other end access third exchange driving end (1.3c) of direct current supplementary module (9.3)；The output terminal that exchange turns DC Module (8) is born
Pole is connected with the one end of negative line (2.2), the cathode of the other end access direct-flow input end (1.2) of negative line (2.2)；It is described straight
The output head anode that the output head anode of galvanic electricity source port (7) turns DC Module (8) with exchanging connects, DC power supply port (7)
Negative pole of output end turn the negative pole of output end of DC Module (8) with exchanging and connect, after DC power supply is by DC power supply port (7)
Obtained voltage will be with exchanging the voltage progress parallel connection for turning DC Module (8) to being obtained after AC power progress rectification；
The cathode of one end of the energy storage port (5), the negative pole of output end for turning DC Module (8) with exchanging are connected, energy storage port
(5) anode of the same end is connected after a switch S4 with one end of electrode line (2.1), the other end access of electrode line (2.1)
The anode of direct-flow input end (1.2), the anode at this end of energy storage port (5) are also connected with switching one end of S5, switch the another of S5
One end is connected with two branches：One branch exchanges driving through the first DC to DC supplementary module (9.1) for switch S5 with first
(1.3a) is held to be connected, another branch exchanges driving end through the second DC to DC supplementary module (9.2) for switch S5 with second
(1.3b) is connected；The other end of energy storage port (5) is used to connect rechargeable battery；First exchange driving end (1.3a) is through opening
Close S1 after be connected with motor port (4), second exchange drive end (1.3b) after switching S2 also with motor port (4) phase
Even, third exchange driving end (1.3c) is also connected after switching S3 with motor port (4)；Standard inverters (1) are through motor
Port (4) is connected afterwards with motor；
Described exchange also is connected with the first pre-charge module between the output head anode for turning DC Module (8) and switch S6, and described the
One pre-charge module is made of switch S7 and resistance R1 in parallel；The energy storage port (5) be not connected with rechargeable battery one
End is also connected with the second pre-charge module between the anode at this end and switch S4, switch S5, and second pre-charge module is by parallel connection
Switch S8 and resistance R2 form；
The first DC to DC supplementary module (9.1) is inductance L1, and the second DC to DC supplementary module (9.2) is inductance
L2, third DC to DC supplementary module (9.3) are inductance L3；
It is described switch S1, switch S2 and switch S3 be linked switch, switch S1, switch S2 and switch S3 simultaneously open or simultaneously
It is closed；The switch S5 and switch S6 is also linked switch, and switch S5 and switch S6 are opened or are closed at simultaneously.
2. the Multifunctional inverter as described in claim 1 that can be used for charging and driving, it is characterised in that：The exchange turns straight
A filter capacitor C1 is parallel between the output head anode and cathode of flow module (8)；The energy storage port (5) not with chargeable electricity
One end that pond is connected is parallel with a filter capacitor C2 between the positive electrode and negative electrode at this end.
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| CN201410574666.8A CN104320042B (en) | 2014-10-24 | 2014-10-24 | A kind of Multifunctional inverter that can be used for charging and driving |
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| CN104608717B (en) * | 2015-02-16 | 2017-06-23 | 中国北方车辆研究所 | A kind of armored vehicle electric power system |
| CN106972573A (en) * | 2017-04-24 | 2017-07-21 | 深圳市永联科技股份有限公司 | A kind of super capacitor charging system based on battery |
| CN107300670A (en) * | 2017-06-08 | 2017-10-27 | 北京新能源汽车股份有限公司 | Detection circuit, Vehicular charger and the automobile of Vehicular charger power relay |
| CN109256793B (en) * | 2017-07-14 | 2024-04-09 | 周锡卫 | Control method of multifunctional energy storage mobile ship shore power system |
| WO2019163000A1 (en) * | 2018-02-20 | 2019-08-29 | 三菱電機株式会社 | Motor drive system |
| CN111347900B (en) * | 2018-12-21 | 2021-11-12 | 比亚迪股份有限公司 | Vehicle, motor control circuit and power battery charging and heating method |
| CN109751122A (en) * | 2019-01-15 | 2019-05-14 | 北京理工大学 | A kind of multi-functional APU module and the unmanned platform of hybrid power |
| CN112868175A (en) | 2019-01-28 | 2021-05-28 | 华为技术有限公司 | Equipment, method and system for solving common-mode voltage interference |
| CN110155345B (en) * | 2019-06-05 | 2022-09-13 | 重庆隆鑫通航发动机制造有限公司 | Hybrid power system of unmanned aerial vehicle |
| CN110611330B (en) * | 2019-10-12 | 2023-05-23 | 珠海万力达电气自动化有限公司 | Multifunctional railway purifying power supply with mixed expandable capacity and cooperative control method |
| CN112483000A (en) * | 2020-12-16 | 2021-03-12 | 浙江迅蓝智能科技有限公司 | Horizontal-hole type high-power shock wave generating device and method |
| CN114084006A (en) * | 2021-08-18 | 2022-02-25 | 西安特来电领充新能源科技有限公司 | Online power supply charging system and control method |
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| CN103427443B (en) * | 2012-05-14 | 2016-01-20 | 周锡卫 | A kind of generation of electricity by new energy electric power system based on many electric intelligents tuner |
| CN102923537B (en) * | 2012-11-13 | 2014-04-23 | 天津大学 | Integration drive control device for supercapacitor energy storage type elevator |
| CN103269117B (en) * | 2013-06-03 | 2015-05-13 | 河海大学常州校区 | Control method for multi-energy convergence coordinated control system |
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