CN204179737U - A kind of electric supply installation - Google Patents

A kind of electric supply installation Download PDF

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Publication number
CN204179737U
CN204179737U CN201420579140.4U CN201420579140U CN204179737U CN 204179737 U CN204179737 U CN 204179737U CN 201420579140 U CN201420579140 U CN 201420579140U CN 204179737 U CN204179737 U CN 204179737U
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China
Prior art keywords
energy
bus
phase inverter
public
storage units
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CN201420579140.4U
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Chinese (zh)
Inventor
刘仪
张庆
卢雄
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Shenzhen Maxonic Automation Control Co., Ltd.
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SHENZHEN OUDESI CONTROL TECHNOLOGY Co Ltd
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
    • B28C5/421—Drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B60L7/14—Dynamic electric regenerative braking for vehicles propelled by ac motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/14—Synchronous machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • B60L2240/441—Speed
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Structural Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Inverter Devices (AREA)

Abstract

The utility model discloses a kind of electric supply installation, comprise public DC bus (5), with the first three-phase inverter (2) that described public DC bus (5) connects, the respectively generator unit (3) that be connected corresponding with each of described first three-phase inverter (2) and the first energy-storage units (4a) and the second energy-storage units (4b).Enforcement the beneficial effects of the utility model are: 1. each phase of the first three-phase inverter all can realize the function of unidirectional boosting or Bidirectional up-down die mould DC-to-DC converter, in whole electric supply installation, only need use inverter as power electronic device, without the need to installing independently DC-to-DC converter, save cost; 2. based on aforementioned multiple DC-to-DC converter, significantly can expand working range, be not only the requirement significantly reduced supply power voltage, and the energy-storage units of various energy type and power-type can be selected arbitrarily to carry out Combination application, be conducive to system optimization.

Description

A kind of electric supply installation
Technical field
The utility model relates to a kind of for providing the device of electric energy, and this device is the critical component of the dynamical system of new-energy automobile.
Background technology
For new-energy automobile, for mixed power electric car, this new electric drive technology, by replacing traditional explosive motor, which reduces the consumption of fuel and the discharge of pollutant.Hybrid power drives under normal circumstances is a trailer system, and its engine is made up of motor, generator, gearbox and energy storage device (as battery).Rely on these assemblies can form the hybrid power system of different framework, as series parallel type, tandem, parallel and extended-range, plug-in.
A major advantage of this hybrid power system is exactly that it is generated electricity by internal-combustion engine drives generator usually.Like this, less size can be had when designing internal combustion engine.Because do not need to design according to the peak power in short-term in practical application again, but only consider the average power in longer a period of time.Reason is that peak power can obtain from energy storage device.Therefore, the fuel consumption of motor vehicles and disposal of pollutants just can be significantly reduced.
Especially in actual applications, the difference of peak power and average power is very large.Therefore, the advantage of hybrid power system is just more obvious.The rotating speed of engine at running hours can be set substantially close to constant speed, be close to best working point, therefore can obtain an optimum operating efficiency.Nowadays, the peak power based on the motor vehicle of hybrid power system can be designed to up to being five times in average power.
For mixed power electric car, energy produced when braking by thermal losses, but can not can feed back to energy-storage units, and Here it is " energy regenerating ".
Especially advantageously, this hybrid power system can be used for commerial vehicle or bus.Usually, hybrid power system is not limited only to motor vehicle industry, and can be used in the wheeled apparatus such as such as boats and ships, refrigeration plant and concrete mixer.
As everyone knows, hybrid power system is using internal combustion engine as generator unit, and its principle is: the mechanical energy produced by internal combustion engine is converted to electric energy through generator and inverter.The three-phase output voltage of generator is converted to direct voltage by inverter, this direct voltage by the DC bus-bar voltage as motor inverter, for powering to each motor on automobile driving axle.The energy of energy-storage units as battery etc. stores then need by one independently DC-to-DC converter be connected to DC bus.In addition, each electrical system of automobile also needs to be connected to DC bus by special DC-to-DC converter.These DC-to-DC converter are generally be used as boosting or step-down controller, the low pressure coming from energy-storage units are transformed on higher DC bus, or will come from the voltage transitions of DC bus in lower electrical system.
Therefore, the electric supply installation of existing hybrid power system needs to install special independently DC-to-DC converter, this means to need extra power electronic device, not only needs larger installing space, but also add the cost of hybrid power system.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provides a kind of electric supply installation.
The utility model solves the technical scheme that its technical problem adopts: provide a kind of electric supply installation, comprise public DC bus, with the first three-phase inverter that described public DC bus connects, the respectively generator unit that be connected corresponding with each of described first three-phase inverter and the first energy-storage units and the second energy-storage units, wherein: each of described first three-phase inverter is respectively as unidirectional or two-way DC-DC converter; A wherein phase of described first three-phase inverter exports described public DC bus to after being boosted by the direct voltage that described generator unit produces; Export described public DC bus to after the other two-phase of described first three-phase inverter is respectively used to the direct voltage of described first energy-storage units, the second energy-storage units to boost, and the voltage of described public DC bus to be carried out power storage after step-down in described first energy-storage units and the second energy-storage units.
In above-mentioned electric supply installation, the controller that described electric supply installation also comprises the second three-phase inverter, the motor be connected with described second three-phase inverter, the 3rd inverter be connected with described public DC bus and is connected with described first three-phase inverter and the second three-phase inverter respectively; Wherein, described second three-phase inverter is powered to motor after the voltage on described public DC bus is reverse into alternating current, and alternating current is converted to direct current in described motor braking process and feed back on described public DC bus; Described electric energy comprises described generator unit and outputs to electric energy on described public DC bus and described electromotor feedback to the electric energy on described public DC bus.
In above-mentioned electric supply installation, each of described first three-phase inverter includes an inductor mutually, wherein: a wherein phase brachium pontis of described first three-phase inverter is connected to described generator unit through the first inductor, the other two-phase brachium pontis of described first three-phase inverter is connected to the first energy-storage units and the second energy-storage units through the second inductor and the 3rd inductor respectively.
In above-mentioned electric supply installation, the rectifier that described generator unit comprises generator and is connected with described generator, the direct current output plus terminal of described rectifier is connected to described first inductor, the direct current of described rectifier exports the negative pole that negative terminal is connected to described public DC bus, and this electric supply installation also comprises the filtering capacitor between direct current output plus terminal and direct current output negative terminal being connected to described rectifier.
In above-mentioned electric supply installation, described generator unit also comprises the first alternating-current switch be connected between AC network and described rectifier and the second alternating-current switch be connected between described generator and described rectifier.
In above-mentioned electric supply installation, described first energy-storage units comprises electrokinetic cell and is connected to the first precharging circuit between the positive pole of described electrokinetic cell and described second inductor, and the negative pole of described electrokinetic cell is connected with the negative pole of described public DC bus.
In above-mentioned electric supply installation, the first switch that described first preliminary filling unit comprises the first resistor and is connected with described first capacitor in parallel, wherein: one end of described first resistor is connected with the positive pole of described electrokinetic cell, the other end of described first resistor is connected with described second inductor.
In above-mentioned electric supply installation, described second energy-storage units comprises energy storage capacitor and is connected to the second precharging circuit between one end of described energy storage capacitor and described 3rd inductor, and the other end of described energy storage capacitor is connected with the negative pole of described public DC bus.
In above-mentioned electric supply installation, the second switch that described second preliminary filling unit comprises the second resistor and is connected with described second capacitor in parallel, wherein: one end of described second resistor is connected with one end of described energy storage capacitor, the other end of described second resistor is connected with described 3rd inductor.
A kind of electric supply installation is also provided, comprise public DC bus, the first three-phase inverter be connected with described public DC bus and the second three-phase inverter, the motor be connected with described second three-phase inverter, the 3rd inverter be connected with described public DC bus, respectively with the controller that described first three-phase inverter and the second three-phase inverter connect and the generator unit that be connected corresponding with each of described first three-phase inverter and the first energy-storage units and the second energy-storage units respectively, wherein: each of described first three-phase inverter is respectively as unidirectional or two-way DC-DC converter, a wherein phase of described first three-phase inverter exports described public DC bus to after being boosted by the direct voltage that described generator unit produces, the other two-phase of described first three-phase inverter is respectively used to after boosting, export the direct voltage of described first energy-storage units, the second energy-storage units to described public DC bus, and from the voltage of described public DC bus after step-down by power storage to described first energy-storage units and the second energy-storage units,
Described second three-phase inverter carries out powering and converted to by alternating current in described motor braking process direct current to motor and feeds back to described public DC bus after the voltage of described public DC bus is reverse into alternating current, and described electric energy comprises described generator unit and outputs to electric energy on described public DC bus and described electromotor feedback to the electric energy on described public DC bus.
Implement electric supply installation of the present utility model, there is following beneficial effect:
1. each of the first three-phase inverter, respectively as DC-to-DC converter, exports public DC bus to after a wherein phase of the first three-phase inverter is used for the direct voltage that generator unit produces to boost; All the other two-phases of first three-phase inverter export public DC bus to after being respectively used to the dc voltage boost the first energy-storage units, the second energy-storage units produced, and from public DC bus by power storage in the first energy-storage units and the second energy-storage units.Therefore, in electric supply installation of the present utility model, only need use inverter as power electronic device, no longer need independently DC-to-DC converter is installed, saved cost.
2., for the first three-phase inverter, it has can the electric function of independence, and greatly extends working range.Namely its without the need to be concerned about connect the DC voltage level of generator unit and energy-storage units, as long as slightly lower than DC bus-bar voltage (only having the minimum loss of voltage).Therefore, just can the exploitation of integrated new systemic-function on this device without the need to carrying out hardware modifications to inverter.Especially for the system using battery and other form energy-storage units, this can be all a kind of innovation greatly within following a period of time.DC-to-DC converter on the second-phase of this first three-phase inverter and third phase, can independently export different voltage, the upper value of these direct voltages independently exported is the voltage a little less than DC bus, and lower limit is almost unrestricted.
3., according to practical situations, allow the various combination of generating and energy-storage units to be connected to each of the first three-phase inverter and go up mutually.Such as, the energy-storage units of identical with two or the different voltage of generator unit can be combinationally used.Similarly, two identical or different generator units also can combinationally use with an energy-storage units.The present invention only uses an equipment to be just combined with this all function, is therefore that low cost is multi-functional.
4. each phase of the first three-phase inverter can as a Bidirectional up-down pressure DC-to-DC converter.Each phase of this inverter can connect generator unit and energy-storage units.Only need little design efforts would just can complete energy management, be particularly suitable for the application of various hybrid electric drive system.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the basic structure schematic diagram of a kind of electric supply installation 1 of the utility model;
Fig. 2 is the concrete structure schematic diagram of the utility model for hybrid electric bus traction drive system assembly;
Fig. 3 be the first-phase brachium pontis of inverter in Fig. 2 in conjunction with inductor L1 and capacitor C1 using the circuit diagram as DC-to-DC converter.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
It is a kind of for providing the basic structure schematic diagram of the device 1 of electric energy that Fig. 1 gives the utility model.This device 1 comprises one for performing the power electronic device of power management---the first three-phase inverter 2.The Ge Xiangdouyou branch 2a of the first three-phase inverter 2.First three-phase inverter 2 is connected with public DC bus 5, and is connected to a generator unit 3 at the first-phase of the first three-phase inverter 2, and this generator unit 3 is for being supplied to public DC bus 5 electric energy by the first three-phase inverter 2 is unidirectional.The second-phase of the first three-phase inverter 2 and third phase are connected to respectively can the first energy-storage units 4a of bidirectional operation or the second energy-storage units 4b, namely the electric energy on public DC bus 5 by the first three-phase inverter 2 point give the first energy-storage units 4a or the second energy-storage units 4b charges, the energy stored in the first energy-storage units 4a or the second energy-storage units 4b is also provided on public DC bus 5 by the first three-phase inverter 2.
By corresponding control, each phase of the first three-phase inverter 2 all can be used as independently DC-to-DC converter.First energy-storage units 4a or the second energy-storage units 4b can be identical or different, also can be energy-type cells or power type battery.Such as the first energy-storage units 4a and the second energy-storage units 4b can comprise the electrokinetic cell 9 shown in Fig. 2 or energy storage capacitor 13.
In Fig. 2, as the selectable energy storage capacitor 13 of one, it can use ordinary capacitor or ultracapacitor, even electric double-layer electrolytic capacitor.Generator unit 3 can be combined by internal combustion engine, generator and rectifier 7 and carry out unidirectional power supply.The bridge rectifier that rectifier 7 is made up of multiple diode (such as six).It is the combination be limited to shown in Fig. 1 that this device 1 has more than.And what also two-way or multichannel generator unit 3 can be connected to the first three-phase inverter 2 wherein one carries out two-way or multiple-way supply mutually.Other phases of first three-phase inverter 2 can be connected to the first energy-storage units 4a and the second energy-storage units 4b.This is used for providing the generator unit 3 of unidirectional electric energy can be identical or different.
The each of first three-phase inverter 2 all can be used as DC-to-DC converter mutually, as shown in Figure 2, as a preferred embodiment, the first-phase of the first three-phase inverter 2 just can be used as DC-to-DC converter in conjunction with the first inductor L1, for direct voltage U1 being transformed into the voltage of a higher public DC bus 5; The second-phase of the first three-phase inverter 2 and third phase respectively correspondence also can be used as DC-to-DC converter in conjunction with the second inductor L2 and the 3rd inductor L3, respectively direct voltage U2 and U3 is converted to the voltage U ZK of higher public DC bus 5, or the voltage U ZK of higher public DC bus 5 is converted to lower direct voltage U2 and U3.The voltage U ZK of public DC bus 5 is cushioned by capacitor CZK (see Fig. 2).
Therefore, direct voltage U1, U2 and U3 is always lower than DC bus-bar voltage UZK.Usually, the direct voltage respectively gone up mutually at the first three-phase inverter 2 all can be configured to identical or different.
The each of first three-phase inverter 2 is all mutually independently and can supplies power to public DC bus 5 in parallel.The operation of generator unit 3 as shown in the arrow I in Fig. 1, its energy flow to being unidirectional, this means only can unidirectional power supply to public DC bus 5, but can not by electric energy feedback to generator unit 3.On the contrary, the work of the first energy-storage units 4a and the second energy-storage units 4b is as shown in double-head arrow II and III in Fig. 1, its energy is two-way flow, this means that it not only can power to public DC bus 5, also can the stored energy in public DC bus 5 in the first energy-storage units 4a and the second energy-storage units 4b.
Each phase based on the first three-phase inverter 2 all can be used as DC-to-DC converter, direct voltage (U1, U2 and U3 as shown in Figure 2) can be converted to the voltage of a common public DC bus 5.The voltage of this public DC bus 5 can also be used for other unit, such as, for the motor 14 of the trailer system of various vehicle.In addition, this motor also can be used as driving auxiliary equipment as vehicle air conditioner.
As a special case, device 1 can as a part of hybrid power or electric bus trailer system, as shown in Figure 2.
Fig. 2 includes the first three-phase inverter 2 in device 1, and the three-phase mode of operation of this first three-phase inverter 2 is by controlling accordingly carry out adjusting and use as DC-to-DC converter.These DC-to-DC converter, in the order of connection of the first three-phase inverter 2 first-phase, second-phase and third phase circuit branch, can be called first, second, and third DC-to-DC converter.As shown in Figure 3, i.e. the first DC/DC convertor circuitry of forming in conjunction with the first inductor L1 of the first-phase of the first three-phase inverter 2.That includes two switching transistor T1 and T2 of the same brachium pontis of first-phase in the first three-phase inverter 2, two diode D1 and D2; In addition, also comprise the first inductor L1 in Fig. 2, preferably, also can comprise filtering capacitor C1; Finally, public DC bus 5 also has a capacitor CZK.Fig. 2 contains each the independently element in this circuit equally.
Similarly, the second DC-to-DC converter is constituted by the second-phase of the first three-phase inverter 2 in conjunction with the second inductor L2; The 3rd DC-to-DC converter is constituted in conjunction with the 3rd inductor L3 by the third phase of the first three-phase inverter 2.Both circuit are all similar with Fig. 3, just dispensed filtering capacitor C1 (it is appreciated of course that, also filtering capacitor can be increased according to actual conditions), and the first inductor L1 is replaced with the second inductor L2 or the 3rd inductor L3, and the voltage being connected to the second inductor L2 or the 3rd inductor L3 corresponds to U2 and U3 in Fig. 2 respectively.Namely be also adopt same circuit composition, therefore do not repeat to provide accompanying drawing.In addition, the first inductor L1 in the present embodiment, the second inductor L2 and the 3rd inductor L3 also can realize by adopting the transformer of inductance coil form.
For the first DC-to-DC converter on the first-phase of the first three-phase inverter 2, in Fig. 3, namely direct voltage UC1 is equivalent to the voltage U 1 at filtering capacitor C1 two ends in Fig. 2, and it is capacitor C1, the first inductor L1, transistor T1 and T2 and be connected to voltage U ZK and the capacitor CZK of public DC bus 5 respectively with diode D1 and D2 of coupled in parallel after filtering.
First DC-to-DC converter is changed usually used as unidirectional booster type, and it is for boosting into the voltage U ZK of public DC bus 5 by relatively low voltage U 1.Its operation principle is: apply control impuls to the grid of transistor T2 by controller 16, its duty ratio is decided by the current voltage value of UC1 and the voltage desired value of UZK.Transistor T1 does not control, and is in idle condition.When transistor T2 conducting, the electric energy coming from direct voltage UC1 flows to the negative pole of public DC bus 5 through the first inductor L1 and transistor T2, first inductor L1 storage power, diode D1 oppositely ends, and public DC bus 5 is powered by capacitor CZK temporarily; When transistor T2 turns off, the first inductor L1 discharges electric energy and charges to capacitor CZK through diode D1, to continue the voltage U ZK of the public DC bus 5 of maintenance.Whole process is exactly in simple terms--T2 conducting, and L1 accumulation of energy, D1 ends, and CZK discharges; T2 turns off, and L1 releases energy, D1 conducting, and CZK charges, and U1 is boosted to UZK.Now, the voltage U ZK=U1* [(TON+TOFF)/TOFF] of public DC bus 5, in formula, TON is the transistor turns time, and TOFF is transistor turn-off time, TON+TOFF=T, the control cycle T that namely formation one is complete.Due in a control cycle T, transistor can not be all conducting, i.e. (TON+TOFF)/TOFF >=1, therefore visible, as long as TON ≠ 0, the voltage U ZK of public DC bus 5 must higher than direct voltage U1, and namely UZK magnitude of voltage adjusts by the switch conduction times controlling transistor T1 and T2, and the scope of U1 can be 10VDC to the voltage no better than UZK.
For the second DC-to-DC converter on the second-phase of the first three-phase inverter 2, now two transistors are replaced to T3 with T4 (because of identical with T1, T2 respectively by T1 with T2, do not provide accompanying drawing herein), diode is replaced to D3 and D4 respectively by D1 and D2, and the first inductor L1 replaces with the second inductor L2 in Fig. 2.The voltage U ZK of public DC bus 5 through two transistor T3 and T4, respectively with diode D3 and D4 of coupled in parallel and the second inductor L2 after, then be connected to direct voltage U2, be finally connected to electrokinetic cell 9.This second DC-to-DC converter can realize Bidirectional up-down pressure translation function.
When the second DC-to-DC converter is as boost conversion, the voltage U 2 of its electrokinetic cell 9 comprised by the first energy-storage units 4a in Fig. 1 converts the voltage U ZK of higher public DC bus 5 to.Its operation principle is identical with the first DC-to-DC converter, does not repeat them here.
When the second DC-to-DC converter is changed as step-down, the voltage U ZK of public DC bus 5 is converted to lower voltage U 2 and charges to electrokinetic cell 9 by it.Its operation principle is: apply control impuls to the grid of transistor T3 by controller 16, its duty ratio is decided by the current voltage value of UZK and the voltage desired value of U2.Transistor T4 does not control, and is in idle condition.When transistor T3 conducting, the voltage U ZK of public DC bus 5 is through capacitor CZK generation current through transistor T3, and flow through the second inductor L2 and carry out energy storage, diode D4 ends, and finally obtains direct voltage U2; When transistor T3 turns off, the second inductor L2 releases energy, and diode D4 conducting also forms continuous current circuit, continues to provide electric energy to U2.Whole process is exactly in simple terms--T3 conducting, and L2 accumulation of energy, D4 ends, and UZK powers to U2 through L2; T3 ends, and L2 releases energy, and D4 conducting, by L2 continued power to U2.Because the second inductor L2 accumulation of energy size directly affects the height of U2 voltage, and L2 accumulation of energy size corresponds to the ON time of transistor T3, i.e. U2=UZK* [TON/ (TON+TOFF)].In formula, TON is the transistor turns time, and TOFF is transistor turn-off time, TON+TOFF=T, the control cycle T that namely formation one is complete.Due in a control cycle T, transistor can not be all conducting, i.e. TON/ (TON+TOFF) < 1, as can be seen here, direct voltage U2 is the voltage U ZK lower than public DC bus 5, so just achieves hypotensive effect.
Based in like manner, the 3rd DC-to-DC converter on the third phase of the first three-phase inverter 2, its circuit and operation principle identical with the second DC-DC converter, do not repeat them here.
Single voltage shown in Fig. 2 embodiment depends on the combining form of each separate unit.According to different application, the various combinations of generator unit and energy-storage units all can be connected to the first three-phase inverter 2.Such as, a generator unit adds that no matter two be identical or different energy-storage units, can combinationally use; Same, two identical or different generator units also can use in conjunction with energy-storage units.First three-phase inverter 2 each mutually all can separate connection to generator unit, and energy parallel connection can be delivered on public DC bus 5.The generator unit that is applicable to and energy-storage units also can be selected to adjust flexibly.Such as, the generator unit that can be made up of petrol engine or Diesel engine, threephase generator and rectifier is powered, also can be powered by the generator unit formed with steam turbine, threephase generator and rectifier, the generator unit that also can be made up of Stirling engine, threephase generator and rectifier is powered.Usually in this case, rectifier is used for converting the alternating voltage of generator to direct voltage.
In Fig. 2, the first-phase of the first three-phase inverter 2 connects a generator 6 by the first inductor L1, and this generator 6 is synchronous generator, and it does not draw engine here as one-way electric power.Come from the voltage of threephase generator by becoming the direct voltage of pulsation after rectifier 7, then by filtering capacitor C1, filtering is carried out to eliminate voltage ripple and to obtain more stable direct voltage to it.The bridge rectifier that rectifier 7 is generally made up of multiple diode (such as six).
The voltage that generator 6 produces can change with rotating speed, causes voltage U 1 also respective change.Therefore, must guarantee that the rotating speed of this generator is lower than its maximum speed, such direct voltage U1 higher than the difference of the voltage U ZK of DC bus-bar voltage 5 and minimal losses voltage, can not can be low to moderate 10VDC.
Direct voltage U1 boosts to the voltage U ZK of public DC bus 5 by the first DC-to-DC converter that the switching tube of the same brachium pontis in the first-phase of the first inductor L1 and the first three-phase inverter 2 is formed, wherein, energy flows in public DC bus 5 and capacitor CZK.
Unidirectional direct-current power supply can be used equally to replace AC power.Especially fuel cell, the first-phase that can be connected to the first three-phase inverter 2 replaces generator 6 and rectifier 7.The advantage of fuel cell is that efficiency is very high, but shortcoming needs longer warm-up time (current be generally designed to 1 hour) before being initiated.Therefore, use generator and fuel battery combination to replace conventional batteries to be very useful, here fuel battery energy provides more suitable firm power.
The voltage that the generator unit 3 be particularly made up of internal combustion engine and generator produces is after rectifier 7, and this current waveform will be no longer sinusoidal wave, and this will reduce the efficiency of generator, and creates unnecessary harmonic wave.But the first three-phase inverter 2 can possess active PFC (power factor correction) function and offset harmonic wave.Here, electric current is controlled thus the electric current that generator is produced is similar to sine wave.
In addition, AC network 8 can be three-phase alternating current or single-phase alternating current, like this night same available alternate electrical network 8 replace generator 6 and power.Now, the first alternating-current switch be connected with AC network 8 is in conducting state, and the second alternating-current switch be connected with generator 6 is in off-state.Therefore the alternating current that AC network 8 provides can be passed through after rectifier 7 carries out rectification and produces voltage U 1, this voltage is after capacitor C1 filtering, then the first DC-to-DC converter on the first-phase of the first three-phase inverter 2 boosts to the voltage U ZK of public DC bus 5.Like this, not only can convert the voltage U ZK step-down of public DC bus 5 to direct voltage U2 by the second DC-to-DC converter on the second-phase of the first three-phase inverter 2 to charge to the electrokinetic cell 9 in the first energy-storage units 4a, the voltage U ZK step-down of public DC bus 5 can also be converted to direct voltage U3 by the 3rd DC-to-DC converter on the third phase of the first three-phase inverter 2 and charge to the energy storage capacitor 13 in the second energy-storage units 4b.When load is less, or in case of emergency, single-phase alternating current even can be utilized to replace three-phase alternating current to power, and suitably can reduce charging current, so average family electrical socket can also be used to charge.
The second-phase of this first three-phase inverter 2 is connected to the first energy-storage units 4a in conjunction with the second inductor L2 as second DC-to-DC converter that can realize energy bi-directional conversion.First energy-storage units 4a comprises electrokinetic cell 9 and the first precharging circuit 10.Electrokinetic cell 9 can provide direct voltage U2 and through the second inductor L2 to the first three-phase inverter 2 second-phase, energy storage capacitor 13 can provide direct voltage U3 and through the 3rd inductor L3 to the third phase of the first three-phase inverter 2, voltage on simultaneously public DC bus 5 also can charge to electrokinetic cell through the second inductor L2 through the second-phase of the first three-phase inverter, or through the first three-phase inverter third phase and charge to energy storage capacitor 13 through the 3rd inductor L3.
Electrokinetic cell 9 is connected to the second DC-to-DC converter on the second-phase of the first three-phase inverter 2 by the first precharging circuit 10.When capacitor CZK on public DC bus 5 is empty, the first precharging circuit 10 is used to limit impulse current.For this reason, this circuit have employed first resistor 11 for current limliting, and with open the first pass 12 and carry out in parallel.When circuit is just started working, the first switch 12 disconnects, and electric current is through the first resistor 11 and by current limliting; After circuit enters stable state, the first switch 12 closes, then the first resistor 11 is shorted, and all electric currents only flow through the first switch 12.In addition when whole device 1 is in idle state, extra loss is brought in order to eliminate the long-term place in circuit of the first resistor 11, a switch can be added again carry out connect (attached not shown in FIG.) with the first resistor 11, this switch is disconnected the connection that can thoroughly disconnect between two energy-storage units (electrokinetic cell 9 and energy storage capacitor 13) and the first three-phase inverter 2, avoid unnecessary power consumption.
The second DC-to-DC converter on the second-phase of the first three-phase inverter 2 can bi-directional conversion.This means, the electric energy of storage can be discharged on public DC bus 5 by the second DC-to-DC converter by electrokinetic cell 9; Or, have on public DC bus 5 during excess energy and also can charge (such as, when braking) to electrokinetic cell 9.Electrokinetic cell 9 generally selects energy-type cells, its power output usually far above load, but its absorb because of braking produce energy higher in short-term time be restricted.But, also can use power type battery, its capacity is less, but power and electric current higher.
In theory, the precharging circuit 10 of the second-phase of the first three-phase inverter 2 also may be used for first-phase.
The 3rd DC-to-DC converter on the third phase of the first three-phase inverter 2 is connected to the second energy-storage units 4b.In the present embodiment, the second energy-storage units 4b comprises energy storage capacitor 13 and the second precharging circuit 10 ', and this is a kind of ultracapacitor of electrolysis material.This energy storage capacitor 13 provides direct voltage U3.Similarly, energy storage capacitor 13 is also connected to the 3rd DC-to-DC converter on the third phase of the first three-phase inverter 2 by the second precharging circuit 10 '.The same with the effect of above-mentioned first precharging circuit 10, this circuit also uses second resistor 11 ' for current limliting, and in parallel with second switch 12 '.
Relative to electrokinetic cell 9, energy storage capacitor 13 (a few second) can absorb or discharge much bigger energy at short notice.Therefore they can be provided for the two-way peak power of electric power storage and electric discharge at short notice, supplement for but high-energy lower powered energy-type cells provide desirable performance.Like this, the energy storage capacitor 13 of this high power type can coordinate the electrokinetic cell 9 of the high-energy type being connected to second-phase to carry out work.Or, in order to redundancy also can connect second same battery.
City bus is can be used for about public DC bus 5 and motor 14.Fig. 2 gives an example by the second three-phase inverter 15 and controller 16 drive motor.
Control the second three-phase inverter 15 by controller 16 to work, the direct voltage UZK that public DC bus 5 provides by the second three-phase inverter 15, be reverse into alternating current supply motor 14.If this motor 14 be permagnetic synchronous motor or it encourage synchronous machine, then this motor 14 is equivalent to generator at braking procedure, can feedback energy on public DC bus 5.These energy can be stored in high performance energy storage capacitor 13 better.
Power also can to the 3rd inverter 17 by public DC bus 5,3rd inverter 17, as Function Extension, is powered to other equipment such as vehicle-mounted air conditioner compressor, air compressor, power-assisted steering motor or hydraulic pump etc. after the DC inverter of public DC bus 5 is become alternating current.
Therefore, implement electric power system of the present utility model, by being connected respectively the first inductor L1, the second inductor L2 and the 3rd inductor L2 to every phase brachium pontis of the first three-phase inverter 2, therefore each phase of the first three-phase inverter 2 all can realize the function of DC-to-DC converter.By providing pulse to the lower brachium pontis transistor T2 in homophase brachium pontis, upper brachium pontis transistor T1 is in idle condition, then this phase brachium pontis combines the corresponding inductor connected and can make step-up DC-DC transducer.For the first-phase brachium pontis of the first three-phase inverter 2, the alternating current that generator 6 sends is rectified into after direct voltage U1 through rectifier 7, this direct voltage U1 just can boost by the first DC-to-DC converter consisted of the first inductor L1 and first-phase brachium pontis again, obtains the voltage U ZK of the public DC bus 5 of the first three-phase inverter 2; For second-phase brachium pontis and the third phase brachium pontis of the first three-phase inverter 2, the second DC-to-DC converter that direct voltage U2 and U3 that first energy-storage units 4a and the second energy-storage units 4b provides also can be formed respectively by the second inductor L2 and second-phase brachium pontis, and the 3rd the 3rd DC-to-DC converter that forms of inductor L3 and third phase brachium pontis boost, obtain the voltage U ZK of public DC bus 5.
In addition, by providing pulse to the upper brachium pontis transistor T1 in homophase brachium pontis, lower brachium pontis transistor T2 is in idle condition, then this phase brachium pontis combines the corresponding inductor connected and can be used as step-down dc-dc converter.The second DC-to-DC converter that the voltage U ZK of public DC bus 5 can be formed respectively by the second inductor L2 and second-phase brachium pontis, and the 3rd after the 3rd DC-to-DC converter that forms of inductor L2 and third phase brachium pontis carries out step-down, charge to respectively the first energy-storage units 4a and the second energy-storage units 4b.Therefore in device of the present utility model, only need use first three-phase inverter as power electronic device, without the need to changing the hardware configuration of this inverter, by controlling the function that can realize DC-to-DC converter accordingly, in the future self power generation unit and the lower direct voltage of energy-storage units can convert a higher public DC bus-bar voltage to, no longer need independently DC-to-DC converter is installed, saved cost.
According to the motor 14 that Fig. 2 designs for city bus, its rated operating range is generally 90 kilowatts to 150 kilowatts.But usually only just can need such power in short-term when accelerating or go up a slope.Its power demand significantly can reduce (about 10 kilowatts to 30 kilowatts) in the process of moving.Therefore, the synchronous generator that can design less average power provides energy required in driving process.If need more energy, then can be provided by the energy storage capacitor 13 of electrokinetic cell or more high-peak power.If only need less energy, then excess energy can be used for charging to electrokinetic cell 9 or energy storage capacitor 13.
Another situation is when power adaptation is in less power demand for a long time, can reduce the rotating speed of generator.While reduction alternator speed, the power of generator and the voltage of generator all can correspondingly reduce, this is not problem for DC-to-DC converter, because this voltage can be carried out boost conversion by DC-to-DC converter become DC voltage level corresponding to DC bus.The efficiency of generator and DC-to-DC converter can reduce a bit slightly, but owing to consuming less fuel, is energy savings as a whole.Also can close generator completely, only be driven (such as when battery is full of electricity) by battery.
The energy that braking produces can temporarily be stored in be had in the energy storage capacitor 13 of high-peak power performance.Then, these energy also can be transferred in electrokinetic cell 9 through DC-to-DC converter by energy storage capacitor 13 again.
Compare traditional bus driven by the engine, appearing at this hybrid-power bus in urban public transport can energy-conservation at least 20%.In addition, the discharge of pollutant will be significantly reduced.Particularly hybrid-power bus is used to have very large advantage in big city and bustling urban district.If there is the electrokinetic cell of enough capacity just only can use electric-only mode in urban district, ability starter-generator under the road conditions of suburbs.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, these all belong within protection of the present utility model.

Claims (10)

1. an electric supply installation, it is characterized in that, comprise public DC bus (5), with the first three-phase inverter (2) that described public DC bus (5) connects, the respectively generator unit (3) that be connected corresponding with each of described first three-phase inverter (2) and the first energy-storage units (4a) and the second energy-storage units (4b), wherein: each of described first three-phase inverter (2) is respectively as unidirectional or two-way DC-DC converter; A wherein phase of described first three-phase inverter (2) exports described public DC bus (5) to after being boosted by the direct voltage that described generator unit (3) produces; Export described public DC bus (5) to after the other two-phase of described first three-phase inverter (2) is respectively used to the direct voltage of described first energy-storage units (4a), the second energy-storage units (4b) to boost, and the voltage of described public DC bus (5) to be carried out power storage after step-down in described first energy-storage units (4a) and the second energy-storage units (4b).
2. electric supply installation according to claim 1, it is characterized in that, the controller (16) that described electric supply installation also comprises the second three-phase inverter (15), the motor (14) be connected with described second three-phase inverter (15), the 3rd inverter (17) be connected with described public DC bus (5) and is connected with described first three-phase inverter (2) and the second three-phase inverter (15) respectively; Wherein, described second three-phase inverter (15) is powered for giving motor (14) after the voltage on described public DC bus (5) is reverse into alternating current, and alternating current is converted to direct current in described motor (14) braking procedure and feed back on described public DC bus (5); Described electric energy comprises described generator unit (3) and outputs to electric energy on described public DC bus (5) and described motor (14) and feed back to electric energy on described public DC bus (5).
3. electric supply installation according to claim 1, it is characterized in that, each of described first three-phase inverter (2) includes an inductor mutually, wherein: a wherein phase brachium pontis of described first three-phase inverter (2) is connected to described generator unit (3) through the first inductor (L1), the other two-phase brachium pontis of described first three-phase inverter (2) is connected to the first energy-storage units (4a) and the second energy-storage units (4b) through the second inductor (L2) and the 3rd inductor (L3) respectively.
4. electric supply installation according to claim 3, it is characterized in that, the rectifier (7) that described generator unit (3) comprises generator (6) and is connected with described generator (6), the direct current output plus terminal of described rectifier (7) is connected to described first inductor (L1), the direct current of described rectifier (7) exports the negative pole that negative terminal is connected to described public DC bus (5), and this electric supply installation also comprises the filtering capacitor (C1) between direct current output plus terminal and direct current output negative terminal being connected to described rectifier (7).
5. electric supply installation according to claim 4, it is characterized in that, described generator unit (3) also comprises the first alternating-current switch be connected between AC network (8) and described rectifier (7) and the second alternating-current switch be connected between described generator (6) and described rectifier (7).
6. electric supply installation according to claim 1, it is characterized in that, described first energy-storage units (4a) comprises electrokinetic cell (9) and is connected to the first precharging circuit (10) between the positive pole of described electrokinetic cell (9) and described second inductor (L2), and the negative pole of described electrokinetic cell (9) is connected with the negative pole of described public DC bus (5).
7. electric supply installation according to claim 6, it is characterized in that, the first switch (12) that described first preliminary filling unit (10) comprises the first resistor (11) and is connected in parallel with described first resistor (11), wherein: one end of described first resistor (11) is connected with the positive pole of described electrokinetic cell (9), the other end of described first resistor (11) is connected with described second inductor (L2).
8. electric supply installation according to claim 1, it is characterized in that, described second energy-storage units (4b) comprises energy storage capacitor (13) and is connected to the second precharging circuit (10 ') between one end of described energy storage capacitor (13) and described 3rd inductor (L3), and the other end of described energy storage capacitor (13) is connected with the negative pole of described public DC bus (5).
9. electric supply installation according to claim 8, it is characterized in that, the second switch (12 ') that described second preliminary filling unit (10 ') comprises the second resistor (11 ') and is connected in parallel with described second resistor (11 '), wherein: one end of described second resistor (11 ') is connected with one end of described energy storage capacitor (13), the other end of described second resistor (11 ') is connected with described 3rd inductor (L3).
10. an electric supply installation, it is characterized in that, comprise public DC bus (5), the first three-phase inverter (2) be connected with described public DC bus (5) and the second three-phase inverter (15), the motor (14) be connected with described second three-phase inverter (15), the 3rd inverter (17) be connected with described public DC bus (5), respectively with the controller (16) that described first three-phase inverter (2) and the second three-phase inverter (15) connect and the generator unit (3) that be connected corresponding with each of described first three-phase inverter (2) and the first energy-storage units (4a) and the second energy-storage units (4b) respectively, wherein: each of described first three-phase inverter (2) is respectively as unidirectional or two-way DC-DC converter, a wherein phase of described first three-phase inverter (2) exports described public DC bus (5) to after being boosted by the direct voltage that described generator unit (3) produces, the other two-phase of described first three-phase inverter (2) is respectively used to after boosting, export the direct voltage of described first energy-storage units (4a), the second energy-storage units (4b) to described public DC bus (5), and from the voltage of described public DC bus (5) after step-down by power storage to described first energy-storage units (4a) and the second energy-storage units (4b),
Described second three-phase inverter (15) feeds back to described public DC bus (5) for carrying out powering and converted to by alternating current in described motor (14) braking procedure direct current to after the voltage of described public DC bus (5) is reverse into alternating current motor (14), and described electric energy comprises described generator unit (3) and outputs to electric energy on described public DC bus (5) and described motor (14) and feed back to electric energy on described public DC bus (5).
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Cited By (6)

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CN108471261A (en) * 2018-03-14 2018-08-31 同济大学 A kind of activation system and method for digital electricity generating group
CN111443288A (en) * 2020-04-27 2020-07-24 山东沃森电源设备有限公司 Low-cost new energy automobile motor test power supply
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