CN106253285B - A kind of vehicle-mounted bidirectional charger, electric car and mains by harmonics compensation method - Google Patents
A kind of vehicle-mounted bidirectional charger, electric car and mains by harmonics compensation method Download PDFInfo
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- CN106253285B CN106253285B CN201610888727.7A CN201610888727A CN106253285B CN 106253285 B CN106253285 B CN 106253285B CN 201610888727 A CN201610888727 A CN 201610888727A CN 106253285 B CN106253285 B CN 106253285B
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- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of vehicle-mounted bidirectional charger, electric car and mains by harmonics compensation method, wherein vehicle-mounted bidirectional charger includes: the first detecting element, detects the electric current and voltage of guard station power grid；Computing unit, it is connect with the first detecting element, for according to the electric current and voltage detected, calculate the power quality of guard station power grid, the harmonic current for needing to compensate is calculated according to the power quality of guard station power grid, corresponding harmonic current compensation instruction is generated, and output harmonic wave current compensation is instructed to compensating current control device；Compensating current control device, connect with computing unit, and the harmonic current compensation instruction for being exported according to computing unit, the power supply that control power battery provides generates compensation electric current；And incision equipment, for electric current injection guard station power grid will to be compensated.Active compensation can be carried out to the harmonic wave of guard station power grid through the invention, so as to improve the power quality of guard station power grid.
Description
Technical field
The present invention relates to electric vehicle engineering field, a kind of vehicle-mounted bidirectional charger, electric car and power grid are particularly related to
Harmonic compensation method.
Background technique
Harmonic wave is inevitably generated in power grid use, at present the harmonic compensation of power grid mainly use it is Passively compensated and
The mode of active compensation, wherein Passively compensated mainly compensated using passive devices such as capacitor, inductance；Active compensation is main
It is to be realized with individual Active Power Filter-APF (Active power filter, APF).In addition, general with electric car
And big city carries tens degree electric (i.e. vehicle-mounted bidirectional chargers) on existing electric car, as one " mobile power station ", both
The electric energy of electric automobile power battery can also can be converted into alternating current from grid charging and externally exported.Existing electric car
Vehicle-mounted bidirectional charger have and be electric car charging from guard station power grid and be the function that external loading is powered, but can not be right
The harmonic wave of guard station power grid compensates, and cannot improve the power quality of guard station power grid.
Summary of the invention
The technical problem to be solved in the present invention is to provide the compensation of a kind of vehicle-mounted bidirectional charger, electric car and mains by harmonics
Method can carry out active compensation to the harmonic wave of guard station power grid, improve the power quality of guard station power grid.
In a first aspect, the embodiment of the present invention provides a kind of vehicle-mounted bidirectional charger, which includes: first
Detecting element, computing unit, compensating current control device and incision equipment；Wherein,
First detecting element detects the electric current and voltage of guard station power grid；
Computing unit is connect with the first detecting element, for calculating guard station power grid according to the electric current and voltage detected
Power quality calculates the harmonic current for needing to compensate according to the power quality of guard station power grid, generates corresponding harmonic current compensation
Instruction, and output harmonic wave current compensation is instructed to compensating current control device；
Compensating current control device, connect with computing unit, the harmonic current compensation instruction for being exported according to computing unit,
It controls the power supply that power battery provides and generates compensation electric current；
Equipment is cut, for electric current injection guard station power grid will to be compensated.
Wherein, the vehicle-mounted bidirectional charger further include:
Second detecting element is connect with compensating current control device, for detecting the cell voltage of power battery, and by battery
Voltage output is to compensating current control device；And
Insulated gate bipolar transistor is connect with compensating current control device, power battery and incision equipment respectively；Its
In,
Compensating current control device is instructed according to cell voltage and harmonic current compensation, forms pulse width modulating signal simultaneously
Output controls insulated gate bipolar transistor and is turned on or off to insulated gate bipolar transistor.
Wherein, incision equipment includes: filter inductance, fling-cut switch and soft starting circuit plate.
Wherein, the first detecting element includes:
Network voltage detection module detects the voltage of guard station power grid；And
Power network current detection module detects the electric current of guard station power grid.
Further, computing unit includes:
Power quality computing module, the voltage detected according to network voltage detection module and the inspection of power network current detection module
The electric current measured calculates the power quality of guard station power grid；
Electric current calculates and directive generation module, and the harmonic current for needing to compensate is calculated according to the power quality of guard station power grid,
And generate corresponding harmonic current compensation instruction.
Wherein, network voltage detection module and power network current detection module are respectively sensor element.
Second aspect, the embodiment of the present invention provide a kind of electric car, and electric car includes power battery and above-mentioned vehicle
Bidirectional charger is carried, power battery is connect with vehicle-mounted bidirectional charger.
The third aspect, the embodiment of the present invention provide a kind of mains by harmonics compensation method, using above-mentioned vehicle-mounted bidirectional charger,
This method comprises:
The electric current and voltage of guard station power grid are detected by the first detecting element；
The electric current and voltage output for the guard station power grid that first detecting element is detected make computing unit root to computing unit
According to the electric current and voltage of guard station power grid, the power quality of guard station power grid is calculated, the harmonic wave for needing to compensate is calculated according to power quality
Electric current generates corresponding harmonic current compensation instruction, and harmonic current compensation instruction is exported to compensating current control device；
Compensation is generated according to the power supply that harmonic current compensation instructs control power battery to provide by compensating current control device
Electric current；
Compensation electric current is passed through into incision equipment injection guard station power grid.
Compared with prior art, vehicle-mounted bidirectional charger provided in an embodiment of the present invention, electric car and mains by harmonics are mended
Compensation method calculates the power quality of guard station power grid by computing unit according to the electric current and voltage of guard station power grid, and then calculating need to
The harmonic current to be compensated generates corresponding harmonic current compensation instruction, to make compensating current control device according to harmonic current
Compensating instruction, the power supply that control power battery provides generates compensation electric current, then will compensate electric current injection guard station electricity through incision equipment
Net can carry out active compensation to the harmonic wave of guard station power grid, so as to improve the power quality of guard station power grid.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 shows the structural schematic diagrams of vehicle-mounted bidirectional charger provided in an embodiment of the present invention；
Fig. 2 indicates the flow diagram of mains by harmonics compensation method provided in an embodiment of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
Referring to Figure 1, the structural schematic diagram of vehicle-mounted bidirectional charger provided in an embodiment of the present invention, this hair are shown
Bright embodiment provides a kind of vehicle-mounted bidirectional charger, which includes: the first detecting element 11, computing unit
12, compensating current control device 13 and incision equipment 14.
Wherein, the first detecting element 11 detects the electric current and voltage of guard station power grid；Computing unit 12, with the first detection member
Part 11 connects, for the power quality of guard station power grid being calculated, according to the electric energy of guard station power grid according to the electric current and voltage detected
Mass Calculation needs the harmonic current compensated, generates corresponding harmonic current compensation instruction, and output harmonic wave current compensation instructs
To compensating current control device 13；Compensating current control device 13 is connect with computing unit 12, for what is exported according to computing unit 12
Harmonic current compensation instruction, the power supply that control power battery 20 provides generate compensation electric current；Equipment 14 is cut, for electricity will to be compensated
Stream injection guard station power grid.
In specifically used, external charging equipment 30 is accessed in guard station power grid electrical circuit, fills guard station power grid and outside
Electric equipment 30 is connected in parallel to a supply network respectively, and the vehicle-mounted bidirectional charger 10 of electric car is connect with the external charging equipment,
Vehicle-mounted bidirectional charger 10 can be charged by external charging equipment 30 to electric car, can also be by electric automobile power battery
20 electric energy is converted to alternating current and externally exports.Wherein, the first detecting element 11 detection guard station electricity of vehicle-mounted bidirectional charger 10
The electric current and voltage of net, and the electric current for the guard station power grid that will test and voltage output are to computing unit 12；Computing unit 12
The power quality of guard station power grid is calculated according to the electric current and voltage of the guard station power grid, and power grid needs in guard station are calculated according to power quality
The harmonic current of compensation, to generate corresponding harmonic current compensation instruction, then extremely by harmonic current compensation instruction output
Compensating current control device 13；After compensating current control device 13 receives harmonic current compensation instruction, referred to according to harmonic current compensation
Electric energy (power supply) provided by control power battery is enabled to generate corresponding compensation electric current, which passes through incision 14 note of equipment
Enter to guard station power grid, active compensation is carried out to the harmonic wave of guard station power grid, so as to improve the power quality of guard station power grid.Wherein, should
Guard station power grid can be domestic electric network, or local power net, such as cell power grid.
In a specific example, external charging equipment 30 is to support the single phase ac charging pile of harmonic compensation, the charging pile
Seal in guard station power grid uses electrical circuit, and the vehicle-mounted bidirectional charger 10 of electric car connect with the charging pile, which can be with
The electric current of guard station power grid electricity consumption is detected, and utilizes vacant two hole location in the charge cable for meeting national standard in charging pile
Guard station network load electric current observed quantity is introduced into the vehicle-mounted bidirectional charger 10 of electric car, in this way, vehicle-mounted bidirectional charger
10 can detecte the electric current and voltage of guard station power grid by the first detecting element 11.
In one embodiment, which can also include: that the second detecting element 15 and insulated gate are double
Bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) 16.Wherein, the second detecting element 15 and benefit
The connection of current controller 13 is repaid, is exported for detecting the cell voltage of power battery 20, and by cell voltage to compensation electric current control
Device 13 processed, here, second detecting element 15 can be sensor element；Insulated gate bipolar transistor 16, respectively with compensation
Current controller 13, power battery 20 and incision equipment 14 connect；Wherein, compensating current control device 13 according to cell voltage with
And harmonic current compensation instruction, progress pulse width modulation, the modulation of formation pulse width (Pulse Width Modulation,
PWM it) signal and exports to insulated gate bipolar transistor 16, controls insulated gate bipolar transistor 16 and be turned on or off, thus
The power supply (DC current) that power battery 20 provides is generated into corresponding compensation electric current by the insulated gate bipolar transistor 16,
And export to incision equipment 14, to be injected into guard station power grid by cutting equipment 14, realize the harmonic compensation of guard station power grid.
Wherein, in one embodiment, incision equipment 14 includes: filter inductance, fling-cut switch and soft starting circuit plate.It is logical
Filter inductance, fling-cut switch and soft starting circuit plate are crossed, compensation electric current can be effectively injected guard station power grid, accurately to have
Realize corresponding harmonic compensation in effect ground.
In one embodiment, the first detecting element 11 may include: network voltage detection module 111 and power network current inspection
Survey module 112.Wherein, network voltage detection module 111 detects the voltage of guard station power grid；Power network current detection module 112, inspection
Survey the electric current of guard station power grid.Wherein, in embodiments of the present invention, the network voltage detection module 111 and power network current detect mould
Block 112 is respectively sensor element.
Further, in one embodiment, computing unit 12 may include: power quality computing module and electric current calculate and
Directive generation module.Wherein, power quality computing module, the voltage and power grid detected according to network voltage detection module 111
The electric current that current detection module 112 detects calculates the power quality of guard station power grid；Electric current calculates and directive generation module, root
The harmonic current for needing to compensate is calculated according to the power quality of guard station power grid, and generates corresponding harmonic current compensation instruction.
In addition, in one embodiment, the computing unit 12 and compensating current control device 13 can be respectively individual monolithic
Machine is also possible to be arranged on same single-chip microcontroller.
In addition, the embodiment of the present invention provides a kind of electric car, electric car includes power battery 20 and above-mentioned vehicle-mounted
Bidirectional charger 10, power battery is connect with vehicle-mounted bidirectional charger.Wherein, the body construction of the electric car is existing skill
Therefore art repeats no more the body construction of specific electric car in the present embodiment.Also, due to the embodiment of the present invention
The vehicle-mounted bidirectional charger of offer has aforementioned techniques effect, and therefore, the electric car with the vehicle-mounted bidirectional charger is also answered
It is with the corresponding technical effect.
In addition, referring to fig. 2, showing the process signal of mains by harmonics compensation method provided in an embodiment of the present invention
Figure, the embodiment of the present invention provide a kind of mains by harmonics compensation method, and using above-mentioned vehicle-mounted bidirectional charger, this method may include
Following steps:
Step 201, the electric current and voltage of guard station power grid are detected by the first detecting element.
In the step, external charging equipment 30 is accessed in guard station power grid electrical circuit, sets guard station power grid and external charging
Standby 30 are connected in parallel to a supply network respectively, and vehicle-mounted bidirectional charger 10 is connect with the external charging equipment, pass through the first detection member
The electric current and voltage of the detection guard station power grid of part 11.In one example, external charging equipment 30 is to support the blow-up of harmonic compensation
Current charge stake, what which sealed in guard station power grid uses electrical circuit, and vehicle-mounted bidirectional charger 10 connect with the charging pile, using filling
Guard station network load electric current observed quantity is introduced electricity by vacant two hole location met in the charge cable of national standard in electric stake
In the vehicle-mounted bidirectional charger 10 of electrical automobile, so that vehicle-mounted bidirectional charger detects guard station power grid by the first detecting element 11
Electric current and voltage.Specifically, the step may include: to detect the voltage of guard station power grid by network voltage detection module 111；It is logical
Cross the electric current of the power network current detection module 112 detection guard station power grid.
Step 202, the electric current and voltage output of the guard station power grid the first detecting element detected make to count to computing unit
Unit is calculated according to the electric current and voltage of guard station power grid, calculates the power quality of guard station power grid, needs to mend according to power quality calculating
The harmonic current repaid generates corresponding harmonic current compensation instruction, and harmonic current compensation instruction output is extremely compensated electric current control
Device processed.
In the step, by the electric current of the guard station power grid for detecting the first detecting element 11 and voltage output to calculating list
Member 12, so that computing unit 12 is according to the power quality of the electric current and voltage of the guard station power grid calculating guard station power grid, and according to this
Power quality calculates the harmonic current for determining that guard station power grid needs to compensate, and refers to generate corresponding harmonic current compensation
It enables, then harmonic current compensation instruction output is prepared to compensating current control device 13 for subsequent step.Specifically, should
Step may include: that the voltage and power network current detected by power quality computing module according to network voltage detection module is examined
The electric current that module detects is surveyed, the power quality of guard station power grid is calculated；It is calculated by electric current and directive generation module is according to guard station
The power quality of power grid calculates the harmonic current for needing to compensate, and generates corresponding harmonic current compensation instruction.
Step 203, the power supply for instructing control power battery to provide according to harmonic current compensation by compensating current control device
Generate compensation electric current.
In the step, the harmonic current compensation that computing unit 12 exports is received by compensating current control device 13 and is instructed, and
It is instructed according to the harmonic current compensation and controls the corresponding compensation electric current of the generation of electric energy (power supply) provided by power battery.
Step 204, compensation electric current is injected into guard station power grid by incision equipment.
In the step, by incision equipment 14 by compensate electric current be injected into guard station power grid, with the harmonic wave to guard station power grid into
Row active compensation, so as to improve the power quality of guard station power grid.
In one embodiment, when vehicle-mounted bidirectional charger 10 can also include: that the second detecting element 15 and insulated gate are double
Bipolar transistor 16, step 203 may include: the cell voltage of power battery 20 to be detected by the second detecting element 15, and incite somebody to action
Cell voltage is exported to compensating current control device 13；It is mended by compensating current control device 13 according to cell voltage and harmonic current
Instruction is repaid, pulse width modulating signal is formed and is exported to insulated gate bipolar transistor 16, to control insulated gate bipolar crystalline substance
Body pipe 16 is turned on or off.
Vehicle-mounted bidirectional charger, electric car and mains by harmonics compensation method provided in an embodiment of the present invention, pass through calculating
Unit calculates the power quality of guard station power grid according to the electric current and voltage of guard station power grid, and then calculates the harmonic wave electricity for needing to compensate
Stream generates corresponding harmonic current compensation instruction, so that compensating current control device be made to be instructed according to harmonic current compensation, control is dynamic
The power supply that power battery provides generates compensation electric current, then will compensate electric current through incision equipment and inject guard station power grid, can be to guard station electricity
The harmonic wave of net carries out active compensation, so as to improve the power quality of guard station power grid.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or the terminal device that include a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of terminal device.In the absence of more restrictions, the element limited by sentence "including a ...", and
It is not precluded in the process, method including the element, article or terminal device that there is also other identical elements.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of vehicle-mounted bidirectional charger, which is characterized in that the vehicle-mounted bidirectional charger includes: the first detecting element, calculates
Unit, compensating current control device and incision equipment；Wherein,
First detecting element detects the electric current and voltage of guard station power grid；
The computing unit is connect with first detecting element, for electric current and voltage that basis detects, is stayed described in calculating
The power quality of ground power grid calculates the harmonic current for needing to compensate according to the power quality of the guard station power grid, generates corresponding
Harmonic current compensation instruction, and export the harmonic current compensation and instruct to the compensating current control device；
The compensating current control device, connect with the computing unit, the harmonic current compensation for being exported according to computing unit
Instruction, the power supply that control power battery provides generate compensation electric current；
The incision equipment, for the compensation electric current to be injected the guard station power grid.
2. vehicle-mounted bidirectional charger according to claim 1, which is characterized in that the vehicle-mounted bidirectional charger further include:
Second detecting element is connect with the compensating current control device, for detecting the cell voltage of power battery, and will be described
Cell voltage is exported to the compensating current control device；And
Insulated gate bipolar transistor is connect with the compensating current control device, power battery and the incision equipment respectively；
Wherein,
The compensating current control device is instructed according to the cell voltage and the harmonic current compensation, forms pulse width tune
Signal processed is simultaneously exported to the insulated gate bipolar transistor, is controlled the insulated gate bipolar transistor and is turned on or off.
3. vehicle-mounted bidirectional charger according to claim 1, which is characterized in that the incision equipment include: filter inductance,
Fling-cut switch and soft starting circuit plate.
4. vehicle-mounted bidirectional charger according to claim 1, which is characterized in that first detecting element includes:
Network voltage detection module detects the voltage of guard station power grid；And
Power network current detection module detects the electric current of guard station power grid.
5. vehicle-mounted bidirectional charger according to claim 4, which is characterized in that the computing unit includes:
Power quality computing module, the voltage detected according to the network voltage detection module and the power network current detect mould
The electric current that block detects calculates the power quality of the guard station power grid；
Electric current calculates and directive generation module, and the harmonic current for needing to compensate is calculated according to the power quality of the guard station power grid,
And generate corresponding harmonic current compensation instruction.
6. vehicle-mounted bidirectional charger according to claim 4, which is characterized in that the network voltage detection module and power grid
Current detection module is respectively sensor element.
7. a kind of electric car, which is characterized in that the electric car includes that power battery and such as claim 1 to 6 are any
Vehicle-mounted bidirectional charger described in, the power battery are connect with the vehicle-mounted bidirectional charger.
8. a kind of mains by harmonics compensation method, special using vehicle-mounted bidirectional charger such as claimed in any one of claims 1 to 6
Sign is, which comprises
The electric current and voltage of guard station power grid are detected by first detecting element；
The electric current and voltage output for the guard station power grid that first detecting element is detected make institute to the computing unit
Computing unit is stated according to the electric current and voltage of the guard station power grid, the power quality of the guard station power grid is calculated, according to the electricity
Can Mass Calculation need the harmonic current that compensates, generate corresponding harmonic current compensation instruction, and by the harmonic current compensation
Instruction is exported to the compensating current control device；
The power supply that the power battery provides is controlled according to harmonic current compensation instruction by the compensating current control device
Generate compensation electric current；
The compensation electric current is injected into the guard station power grid by the incision equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610888727.7A CN106253285B (en) | 2016-10-12 | 2016-10-12 | A kind of vehicle-mounted bidirectional charger, electric car and mains by harmonics compensation method |
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| CN201610888727.7A CN106253285B (en) | 2016-10-12 | 2016-10-12 | A kind of vehicle-mounted bidirectional charger, electric car and mains by harmonics compensation method |
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| CN112310973B (en) * | 2020-12-29 | 2021-04-20 | 中国电力科学研究院有限公司 | Voltage stabilization control method and system, charging pile and charging station |
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|---|---|---|---|---|
| CN105226735A (en) * | 2014-06-13 | 2016-01-06 | 国家电网公司 | A kind of alternating current-direct current compatible type Vehicular charger front stage circuits and Vehicular charger |
| CN205004818U (en) * | 2015-09-02 | 2016-01-27 | 泉州市海通电子设备有限公司 | Intelligent charger for electric bicycle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2928038A1 (en) * | 2014-03-31 | 2015-10-07 | ABB Technology AG | Inductive power transfer system and method for operating an inductive power transfer system |
| KR102391500B1 (en) * | 2015-02-06 | 2022-04-28 | 삼성전자주식회사 | Method and apparatus for controlling battery charging of device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226735A (en) * | 2014-06-13 | 2016-01-06 | 国家电网公司 | A kind of alternating current-direct current compatible type Vehicular charger front stage circuits and Vehicular charger |
| CN205004818U (en) * | 2015-09-02 | 2016-01-27 | 泉州市海通电子设备有限公司 | Intelligent charger for electric bicycle |
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