RO131163A0 - High-power central station for charging electric motor vehicles with direct current and/or alternating current - Google Patents

Abstract

The invention relates to a high-power central station for charging electric motor vehicles with direct current or alternating current. According to the invention, the motor vehicle charging station consists of a specific enclosure (23) hosting a transformer (7) and an associated protection part, and, depending on the power level desired and the space available, this enclosure (23) is continued with a three-phase rectifying enclosure, controlled or not, consisting of rectifying units (15) which are supplied at half of the power of the transformer (7), provided with an intermediary electromagnetic filter (8), and have direct current outputs; these two enclosures, with the generic name of transformation and rectifying unit comprise elements for the connection with a system for producing renewable energy using photovoltaic panels (2), where the transformation and rectifying unit is equipped with N alternating current outputs with an available power ranging between 7.2...43 kW and N direct current outputs with an available power of at least 20 kW, in a first embodiment, a voltage control element being installed in the rectifying unit, and in a second embodiment, the mentioned voltage control element being installed in each station. The charging station is also provided with electronic units for control, activation/payment monitoring and remote data transfer, where the control unit is designed so as to meet the communication standard for alternating and direct current charging, the monitoring unit measuring the energy consumed in each station, calculating the energy transfer efficiency, showing a report of the photovoltaic source energy consumption, monitoring the conversion elements and indicating possible errors/failures, while the transfer unit collects data from all the electronic units and submits them to a central dispatch unit.

Description

The invention relates to the product called central station for charging electric vehicles in the mode of fast charging in direct current and / or alternating current. The scope of this product is related to the charging infrastructure required for electric vehicle users with multiple charging options.

C) THE CURRENT STATE OF WORLD TECHNIQUE

At this moment, there is no central station type product with satellites for charging various electric vehicles on a modular principle, scalable in power and which can be adapted to accommodate future generation (higher power) electric vehicles. In addition, integrating renewable (photovoltaic) energy sources into a centralized EV charging solution using satellites is a whole new concept. The technical advantage of this solution is that it uses high power controlled / non-controlled rectifying elements together with the modular concept (modulated chopper at minimum 25kW fully scalable). This way, new charging possibilities can be reached: satellites can be equipped with DC sockets. and that. or two c.c. in different variants (CHAdeMO or CCS). In the complete DC mode, the use of two low power choppers allows either the simultaneous charging of two vehicles connected to the same satellite, or the loading at the maximum cumulative power of the choppers of a single vehicle. Choppers can be upgraded to power greater than 25kW without the need for intervention in the central station and rectifiers. The technical problem solved by the invention is the centralized charging of electric vehicles in an absolutely modular way, which allows both an increased number of users as well as different charging technologies and which automatically switches additional power as needed.

The global technique in this field is at an early stage, there is only one product with similarities - that of the Chinese company JYNP (http://jiangsu-jiayu.en.ywsp.com/sell/). The disadvantage of this product is the lack of modularity as opposed to the proposed solution that can be scaled both in the central station and in the satellite. Based on the standard fast loading module of lOOkW and only for the loading of own vehicles, this product does not allow charging of several types of vehicles nor can it be improved in the future to accommodate the new charging technologies. This product is not CE certified and may have limitations for use with most electric vehicle manufacturers.

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D) PURPOSE OF THE INVENTION

The aim of the invention is to improve / create the charging infrastructure for electric vehicles with multiple (fast) charging options in the context where it is totally lacking in Romania. The investment is mainly aimed at large commercial operators (shopping centers, cinemas, fitness rooms, residential complexes, exhibition centers - generally medium-to-large-scale traffic targets). The main objective of the invention is the presentation on the Romanian market of a centralized concept of charging electric vehicles, manufactured in Romania, installed and operated by a Romanian company. The following objects of the invention derive directly from the need of potential customers, namely: analysis of power possibilities, customizable sizing, application of renewable energy sources (photovoltaic) for an eco-friendly contribution to network consumption, application of an integrated access-monitoring management system, application the concept of modularity for both the recovery part and the conversion, the emergence of multiple loading possibilities on the same satellite.

E) EXPOSURE OF THE INVENTION

CENTRAL STATION OF GREAT POWER FOR CHARGING UTOVEH1 ELECTRIC CURRENTLY AND / OR ALTERNATIVE CURRENT, eliminates the above disadvantages by the fact that:

an enclosure made of reinforced concrete or metal to encompass the entire set of conversion and conversion power equipment, projections, ventilation and control and control elements;

a low to medium voltage low voltage transformer sized accordingly to the number of satellites to be installed (minimum 25kVA - corresponding to a basic unit for charging), connected to the network through the medium voltage cell;

a filter block for the protection of the equipment in the central station from network interference, properly dimensioned to the power of the downstream transformer;

two network analyzers integrated through Modbus in the central system with the role of storing information regarding the power supply of the two sections (DC and AC), information such as active power, reactive power, power factor, energy, harmonic distortion factor (THD) , voltage and currents.

a galvanic isolation block in the form of an isolation transformer with the role of protecting (isolating) the alternating current circuit that supplies one, two or more controlled switching elements that allow starting or stopping the recovery bridges when the central station has need for additional decks;

<2015-- 0 0 8 1 4 1 1 -11- 2015 one, two or more conversion blocks c.a. towards DC under the form of non-controlled (modular) three-phase rectification bridges, dimensioned at a power of at least 25kVA including filter blocks;

one or more switching units (contactors) also ordered for the DC circuit as an output from the rectifier decks whose role is to parallelize the output of at least two recovery decks, with the final purpose of having double power output at one single satellite;

a protection block through fuse separators installed on the DC outlet. for each satellite with a short-circuit and overload projection role; this protection block will contain two fuse units for each recovery bridge;

a protection block with fuse separators installed on the AC inlet. for the alternative charging circuit, this projection block may contain at least one protection set for LI, L2, L3, N in the form of a drawer with handle for separation;

one or more switching blocks for each satellite; these switching blocks can take over the overload and short circuit protection function provided in the last point;

two systems of bars for supplying rectifying bridges and the alternative charging circuit, consisting of bars of number 4 in number, namely section and length connected to each other by connecting and switching / protection elements;

a cooling block consisting of radiators mounted on the recovery axles, coupled to controlled fans, through air circuits as well as heating resistive elements for the entire enclosure;

a block of distribution and protection of internal consumption of the central station, consisting of electrical panels, automatic switches, differential switches, overvoltage projections and grounding;

a central unit of command and control with the following functions without being limited to them: satellite monitoring and control, monitoring and control of recovery decks, monitoring and control of protection functions (ventilation and heating), data collection from the two type units network analyzer, communication with the central or individual HMI unit from satellites, communication in the OCPP protocol with a back-ojfice software / database;

ten or more photovoltaic panel units with power between 240 and 300W installed on the roof of the central station or in the vicinity, with the additional power supply of the internal circuits of the central station;

a solar-photovoltaic MPPT type conversion unit with the role of converting the energy from the sun through the photovoltaic panels into alternating current energy, directly connected to the network through the bar network on the lower transformer secondary;

a computer unit of data-logger type with the role of monitoring the performances of the photovoltaic generator system;

^ 201 5 - 008141 1 -11- 2015 one or more enclosures for satellites of type 1XCA and ICC or 2XCC (claim 2 and 3) designed at an acceptable volume for both constructive variants: with lx feed in c.c. and lx alignment in c.a. or 2x DC feed;

2. SATELLITE TYPE CHARGING STATION ACCORDING TO Claim 1, CHARACTERIZED THAT THE SATELLITE IS CONTAINED FROM AN EXIT OF C.A. IF ONE OF C.A.

a logic unit type controller with control role and communication with the electric machine in the charging mode in c.a. IEC standard 3 mode, it receives status information from the electric machine and controls the charging stop or start;

a switching unit type contactor, controlled by the logic unit with the role of putting the electric machine in contact with the network and thus starting the charging;

a c.c.-c.c. conversion unit chopper type with the role of varying the voltage in c.c. from 50 to 500V depending on the order of the electric car;

a logic control unit for DC current load control (CHAdeMO, CCS) that can be included in the converter of the conversion unit;

a switching unit of contactor type, controlled by the conversion unit c.c.-c.c. with the role of putting the electric machine in contact with the DC circuit to start charging;

two short-circuit and overload protection units and properly sized; two overvoltage protection units for the AC circuit. and separately for the DC, connected to the earth socket through the connection element;

a thermal protection assembly consists of a fully automated fan and heating resistor for protection in extreme climatic conditions including radiator and forced cooling for the DC-DC converter;

a set of equipment with user interface: emergency stop button (44), touch screen interface, RFID or PIN card reader interface, PLC logic unit;

two compatible sockets: type 2 mod 3 IEC mother connector for AC power supply and type 2 mod 4 CCS / CHAdeMO for fast charging in direct current;

two cable units and instead of the elements and connected directly to the respective contactors, for both technologies - type 2 mod 3 IEC for AC power supply and type 2 mod 4 CCS or CHAdeMO for direct current charging;

3. SATELLITE TYPE CHARGING STATION according to Claim 1, characterized in that the SATELLITE IS CONSTRUCTED FROM TWO EXITS OF C.C.

three switching units contactor type, controlled by the logic unit with the role of putting the electric machine in contact with the network and thus start charging in direct current mode 4 either through 1 power unit (25 or 50kfV) or 2 power units (50 or lOOkW);

two c.c.-c.c. conversion units chopper type with the role of varying the voltage in c.c. from 50 to 500V depending on the order of the electric machine dimensioned at least 25kW;

4 '2015- - 008141 1 -11- 2015 a logic control unit for DC load control with the control role of the two conversion units and / or, either individually or in parallel by CHAdeMO or CCS standard and by ordering the switching units;

two short-circuit and overload protection units and properly sized; an overvoltage projection unit for both DC circuits, connected to the earth socket by the connection element;

a thermal protection assembly consists of a fully automated fan and heating resistor for protection in extreme climatic conditions including radiator and forced cooling for the DC-DC converter;

a set of equipment with user interface: emergency stop button, touch screen interface, RFID or PIN card reader interface, PLC logic unit;

two compatible sockets: type 2 mode 4 CCS or CHAdeMO for fast charging in direct current;

two cable units instead of plug type elements, connected directly in contactors, for both technologies - type 2 mode 4 CCS or CHAdeMO for direct current charging.

F) PRESENTATION OF THE ADVANTAGES OF THE APPLICATION OF THE INVENTION

The invention presents the following advantages: a centralized solution for charging electric vehicles in Romania is conceived, produced and operated, without the intervention of a foreign company, implicitly increasing the accessibility of this solution; the power conversion devices are installed in a modular system centralized in the same enclosure located in the vicinity of the charging stations; veratility of the charging system that can be sized to any required power (typically greater than 2 charging stations) and then improved; installation of electronic measuring, control / monitoring and transmission elements in the same unit; installation of electronic control devices between the vehicle and the station (buck-boost) inside each station; the use of a station in two different modes (DC and AC); upgrade of the stations according to the loading technologies that will be developed subsequently; European certification of the concept of loading; integration and use of a renewable energy source in a so-called car-port structure.

The main technical problem that wants to be overcome at this stage is to achieve a high degree of modularity with the following purposes: to carry out loads of multiple technologies both in the direction of the technology (standard) used and in the direction of the number of vehicles that can simultaneously load and doubling the capacity of a single port in case of the requirement from an electric vehicle that requests it. The second goal is the possibility of adding upgrades both in the central station and in satellites (initially modulated at minimum 25kVA).

The following is an example of an embodiment of the invention, in relation to FIGS. 1-x, which represents:

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1. Solar source;

2. Photovoltaic field (generator);

3. Direct current solar conductors;

4. a. Solar inverter and b. Data-logger photovoltaic system monitoring;

5. 230 / 400F power conductors, 50Hz;

6. Electrical network;

7. Power-down transformer> 1 OOkVA;

8. Electro-magnetic filter;

9. Current translators;

10. Protection block: separator with fuses;

11. DC circuit separation transformer;

12. Recovery contactors (at least 1);

13. Cable or bar assembly for alternating current energy transfer;

14. Protection block: automatic switches or fuses;

15. Three-phase recovery unit in non-controlled / controlled deck of at least 25kVA;

IC Continuous current filter block;

17. Bar assembly for direct current energy transfer and parallelization of rectifier outputs;

18. Parallel coupling;

19. Protection block: separators with fuses for the DC circuit;

20. Ventilation and heating elements of the entire station;

ll.Block of cooling and heating;

ll.Thermal bridge: guide pipes for cold / hot air;

23. Metal or BA tire;

24. Cable assembly as DC output to satellites;

25. Cable assembly as an alternating current output to satellites;

28. Logical control unit / general user interface;

27. Three-phase network parameter analyzers;

28. Auxiliary power supply: 5V, 12V, 24V;

29. Protection for the switching elements in the central station;

30. General distribution;

31. Central command and control unit;

32. Back-office (dispatcher);

33. Set of conductors placed in trenches or cable shelves;

34. IEC type 2 connector charging up to 43kW / 63A (mode 3);

35. Power cable for AC circuit;

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36. Type 2IEC socket;

37. Tetrapolar AC Contactor;

33. Differential protection element for AC circuit;

39. PWM logic for AC charging (charging controller);

40. PLC (Programmable Logic Controller), logic control unit of the user interface block;

Ethernet switch;

42. The user interface; touch screen;

43. User interface: RFID, PIN or key access;

4Λ. Emergency stop button;

45. With tetrapolar DC current;

46. CCS or CHAdeMO type 2 socket (socket);

47. Conversion block c.c. - c.c. (Chopper);

^ .Voltage separators;

automatic protection switch, overload and short circuit;

5Q.Projection elements: heating radiator and forced ventilation;

51. Input / output connection elements;

52. Power cable for DC circuit;

53. CCS type 2 connector for charging mode 4;

54. CHAdeMO type connector for charging mode 4;

55. Grounding or connecting to an existing grounding;

56. a. Housing for satellite type lxCA and lxCC (metallic);

56. b. Satellite housing type 2xCC (metallic);

57. a. Socket (socket) type 2 CCS DC mode 4 charging;

57. b. CHAdeMO socket (socket) in DC mode mode 4;

5 &. KCI Line Contactor ;;

59. KCP line contactor;

60. Line contactor KC2;

61. Thermostats for regulating ventilation on conversion radiators c.c. - c.c .;

Cl.Conversion block c.c. - c.c. (Choppers);

63. Conversion block c.c. - c.c. (Choppers);

64. Control unit for conversion blocks according to CCS or CHAdeMO logic;

65. automatic tetrapolar protection switch;

66. automatic tetrapolar protection switch;

67. DC voltage surge separators;

63. Connecting cables in / out of cables;

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63.A set of conductors placed in the pit or on a metal shelf;

70. Electric vehicle;

G) EXAMPLES OF EMBODIMENT / APPLICATION OF THE INVENTION

The proposed invention consists of modulation of essential components in a charging infrastructure of electric vehicles of centralized concept and starting from such a power station consisting of a specific enclosure that will house a transformer and the associated projection part. Depending on the desired power level and the space provided, this enclosure will continue with the three-phase rectification enclosure (ordered or not ordered) in blocks with multiple of certain powers (> 20kW). The rectifier blocks will be supplied with half the power of the transformer with intermediate EMC filter and will have DC outputs. These enclosures will be made of either reinforced concrete or metal and will be visually integrated into the environment in which they will be installed. These two enclosures called generically - transformation and recovery block will also contain the element of connection with the renewable energy production system (inverter, protections, meter) called generic PV block. From this moment the invention is divided into two: the first, in which the voltage control and control element (buck-boost / chopper) is installed in the rectifier block and the second, in which the voltage control and control element (buck-boost / chopper) / chopper) is installed in each station separately, thus avoiding the installation of control wires from each individual charging station. The transformer and rectifier block shall be equipped with N alternating current outputs with available power ranging from 7.2-43kW and N continuous current outputs with available power at least 20kW. Thus the invention will be composed of; the central station of transformation and recovery, the element of production from the photovoltaic source, N charging stations with double possibility of connection (either together or separated) in DC or alternating current. The connectors and cables used to equip the staff will be chosen and sized so that they are compatible with the mother connectors present on most electric vehicles (lx Type 2 connector IEC 60309 or Type I: SAE J1772-2009, lx Type 2 connector CCS - IEC62196 and communication on IEC61851-23 / 24, additional lx Shuko socket).

The invention / application will also be provided with electronic control blocks (driver), monitoring, activation / payment and remote data transfer. The control block (dedicated electronic circuits) will be designed so as to comply with the communication standard for both AC charging and DC charging (CCS and / or CHAdeMO). The monitoring block will measure the energy consumed from each station, calculate the efficiency of the energy transfer, will be able to present the consumption report from the photovoltaic energy, will monitor all the conversion elements and will present the possible errors / faults. The activation / payment block will be

<2 0 1 5 - 008141 1 -11- 2015 installed in each station separately and will have several options (display, RFID card, SMS, NFC, remote control, key, etc.). The data transfer block will collect data from all other electronic blocks and present them through various methods (cable internet, GPRS) to a central dispatcher assisted by a dedicated software.

The novelty elements emphasized by the invention: the inclusion of the rectifying devices inside the central station together with the transformer, the inclusion of the individual chopper devices in each charging station, the inclusion of the production point from the photovoltaic source, the dimensioning (electronic and mechanical) of the charging stations according to the needs of potential customers.

The details of the operation can be done in two situations: static when a satellite 56 has no electric car 70 connected and dynamic when a satellite or more 56 has connected electrical machines 70 (one or more).

The static situation is characterized by an absence of current through the power circuit, the only devices that are powered and consume energy are: the transformer of connection to the network 7, the analyzers of network 27, the elements of ventilation and heating 20 and all the auxiliary systems. Basically the central station as well as the satellites are in a stand-by waiting for the loading order. During this time, the overcurrent protection elements 38 and 49, overvoltages 48 and 67, the interfacing units 42 and 43, the control part 40 and 41, the emergency stop system 44, the heating and ventilation systems in satellites are particularly active. 50 as well as controllers 39, 47, 62 and 63 as permanent monitoring of the pilot signal communicated with a connected machine, the HMI unit26, the DC sources 27, supplying the ventilation and heating 30 as well as the central control unit 31. The central control unit 31 can be anything from a PCB designed and executed to order according to the requirements of the central station, a programmed PLC or a work station having plates. data acquisition or ETH cable inputs. The rectifiers 15 and choppers 47, 61 and 62 will operate in this situation in empty mode, without the task.

The static situation does not involve zero current on the solar power circuit. Thus, the solar energy 1 is transmitted to the photovoltaic panels 2, they convert it into electrical energy by the form of DC 3 to a three-phase solar inverter 4a of variable size (5-100kW depending on the surface available for the photovoltaic generator). The solar inverter converts the energy into the form of the three-phase alternating current 5 that it makes available to the central station. In static mode, this energy (depending on the quantity) will be consumed by the auxiliary elements or it will be delivered to the network (with or without material gain for the charging station operator). The network analyzers 27 are intended for both the DC circuit. as well as the AC, in the static version having the role of monitoring the voltage from the network. Optionally the photovoltaic circuit can be

<2 0 1 5 - 008141 1 -11- 2015 equipped with a control and monitoring interface 4b that can command the inverter to limit the power or reactive control to compensate the reactive energy produced by the recovery part. The central station contains the following: power transformer 7 dimensioned according to the station's power requirement, filter block 8 through coils and capacitors, galvanic isolation element of the DC circuit. 11, high-current breakable switches 12 for supplying the rectifier bridges 15, output filter block 16, connecting rods for connecting several parallel bridges 17, parallel DC contactor. 18, protection block with fuses 19 related to the output of each satellite 24. Circuit of c.a. it may contain only the fuse or general-purpose switch 10, the branch for each satellite with the fuse or contactor 14 related to the output of each satellite 25. Circuit of c.a. it can be replaced with an additional circuit of c.c. if the need imposes it or it may be completely absent. Connection to a satellite will be made with cable cord 33 sized to power by lOOkWpe c.c. and up to a maximum of 43kW per c.a. Auxiliary power supply for c.a. it is made directly from the power cable while in c.c. it is made by the auxiliary cable 34 connected in parallel in the separate circuit after element 10. As command / control / auxiliary elements, the HMI26 interface has the role of relaying any attempt to authenticate a satellite to the central monitoring and control system (back- 32. As a variant, this HMI interface can only be installed in the central station and optionally in satellites, a principle similar to a public paid parking. The central controller 31 will consider the communication with the satellites, with the HMI interface, with the protection and air conditioning elements as well as with the switching contactor 18. The central station 23 will be designed in the same structure as a transformer station, in metal or concrete premises, with reinforced concrete base having all the characteristics required by the norms for such construction: corresponding dimensions, access door, ventilation holes, cable glands for inputs / outputs, hallway and intervention, fans 20 both on the radiators 21 of the rectifiers and on the transformer enclosure, cold / hot air channels 22, heating elements. In static mode, all elements that are not related to the force path actually required to charge an electric car can operate at rated power.

A satellite can be built in several load variants:

with exit c.a. with socket mod 3 type 2IEC 36 or cable 35 with connector type 2IEC 34;

with one or two outputs c.c. with socket 57a mode 4 type 2 CCS or 57b CHAdeMO or cable 52 and connector 53 type 2 CCS or 54 type CHAdeMO / SAE.

Two situations are presented in the patent proposal: Figure 2 - satellite 56a with an output c.a. type 2 and an output c.c. as well as Figure 3 - satellite 56b with two outputs c.c.

In addition to the connection part, satellite 56a has as component elements: input terminals for both circuits 51, protection switch on c.a. 38 and c.c. 49, overvoltage separator <2 01 5 - Ο Ο 8 14 1 1 -11- 2015 for both circuits 48, line contactor 37 ordered in 230Vac or 24Vcc, IEC controller 39 for 3-way charging, type conversion element chopper 47 with the role of varying the voltage between 50 and 500V after the command L either in the CCS or in CHAdeMO, line contactor 45 controlled by L, discharge element included in the conversion element, PLC 40 for control and monitoring at the central station of those two logic elements 39, 47 and with user interfaces, Ethernet switch 41, touch screen interface 42, activation interface 43 (RFID, NFC or PIN), air conditioning circuit 50 (optional heating and ventilation for conversion block 47), power socket earth 55 or connection to an existing earth socket.

In addition to the connection part, satellite 56b has as component elements: connecting clamps 68 inputs and outputs (DC, auxiliary DC and Ethernet), protective switches on DC. separated on two branches 65 respectively 66, chopper conversion element 62 and 63 with the role of varying the voltage between 50 and 500V after the command L fe in CCS or in CHAdeMO / SAE, PCB with control logic L 64 which has two roles - to order the two choppers 62 and 63 fe separately separated in parallel and to order the 3 connection contactors 58, 59 and 60. The auxiliary parts, interfaces, air conditioning and grounding are similar to those of satellite 56a.

The dynamic situation occurs when one of the satellites of constructive type 56a or 56b is connected an electric vehicle. Through the conductors to the machine (sockets 57a or 57b, conductors 35 or 52) the charging states are communicated (according to IEC 61851 1, 21, 22, 23, 24 or CHAdeMO) the limitation of the cable charging current is communicated, the relay status is communicated. interlock in the satellite or car socket. When the information is verified and the machine starts charging by closing the internal contactor, the two charging controllers (separately) 39, 47 + L, 61, 62 and 64 will check if the enable charging function is active by authenticating with one of the interfaces 42, 43 which in turn communicates with the HMI unit 26 which in the last instance communicates with the back-office 32 and waits for the confirmation of enable charging for the respective user / satellite. At this moment the conversion elements (choppers) start controlled by logic L, 39 or 64 and the contactors 37, 45, 58, 59 or 60 will be coupled, thus making electrical contact on the force side with the vehicle. Chopperle works in the logic of AC, CCS CC, CHADEMO DC varying the voltage depending on the need for charging. In this state, the entire circuit between the element 6-19 or 6 - 25 will have the load and the rectifier 15 will exit the idle mode. If additional machines are to be connected to other satellites during this time, the central controller 31 will detect the need for additional power and if necessary will connect through 18 a new rectifier block 15 in parallel with the already functional ones. As a constructive option, the additional rectifier blocks will be energized using a contactor ordered by 31. This can be done so as not to work several rectifier blocks in parallel but to start them successively as needed. Behind the load the network analyzers 27 will present information on: voltage, current, harmonics, instant power, energy consumed, ^ 2015-- 0 0 8 1 41 1 -11-2015

reactive energy communicating this information to the central controller 31. In parallel using temperature and humidity sensors, the ventilation and heating block 30 will be activated to condition the station as an interior volume and as a cooling of the recovery blocks 20 and 21 (they will be equipped with own temperature sensors). All this information is made available to the central controller 31. Optionally, the central station can be equipped with a general switch-over switch, which can be opened in case of emergency to switch off the entire circuit. In satellites, conductors 35 or 52 present energy flow and information through the pilot circuit. The flow of information is permanently changed with the electric vehicle 70 as well as with the back-office 32.

In the case of satellite 56b, the switching logic for various connection options is presented:

SCENARIO CONTACT 58 59 60 NO COMMAND POWER KC1 KCP KC2 EV on input 1 25 closed open open L> 62 EV on input 2 25 open open closed L> 63 EV on entry 1 and 2 25 and 25 closed open closed L-> 62, L-> 63 EV on input 1 50 closed closed open L> 62 & 63 EV on input 2 50 open closed closed L> 62 & 63

Table 1.

As can be seen from table 1, in the type 56b satellite, the chopper elements 62 and 63 can be ordered to charge one output independently from each other or can be used in tandem to supplement power on a single output. The power of a single conversion element can range from 25kVA to 50kVA. Thus, only one satellite has the ability to be upgraded in the future to allow charging at lOOkVA. As in the case of the central station, the ventilation elements will be started by the state of the choppers with special emphasis on this part, in a satellite, without the elements that may need a forced cooling. The conductor 69 in this case will be composed of 2 cables for use in c.c. dimensioned to the maximum power that can be transmitted through satellite 56b, the Ethernet cable and the auxiliary power cable (sources, air conditioning, elements 40-43). The back office operator, the user or the vehicle itself can control the charging stop, then using the status signals communicated with the vehicle allows the opening of interlocking elements in the connectors and removing the charging cables from the vehicle / satellite. In case the application only requires satellites of type 56b then the central station will no longer have the AC circuit installed.

Damage situations and elements of injection protection by c.c. in the network - protection through the galvanic isolation transformer 11 on the circuit

D.C.

<-2015-- 008141 1 -11- Μ15 overload / short-circuit - protection through general switches 12 and fuses 14, 19 selectively dimensioned taking into account the parallelization of harmonic rectifiers and reagents - EMC 8 filter assembly plus correction from solar inverter 4 over-temperature, sub-temperature - ventilation and heating system 20, 21, 22, 50 and 61. overvoltage - overvoltage separators 48, 67 mounted on satellites, grounding connection grounding - residual current separator (optional on ac circuit in satellites) user projection - interlocking in connectors 34, 57a and 57b, state communication via pilot signal in 39, 64; load disconnection via emergency stop button 44.

Claims (4)

CLAIM CENTRAL STATION OF HIGH POWER TO CHARGE ELECTRIC VEHICLES IN CONTINUOUS CURRENT / OR ALTERNATIVE CURRENT CHARACTERISTICS, characterized in that it consists of: an enclosure (23) made of reinforced concrete or metal to comprise the entire assembly of conversion and conversion power equipment, protections, ventilation and control and control elements; a low-voltage (7) low-voltage transformer sized corresponding to the number of satellites to be installed (minimum 25kVA), connected to the network (6) through the medium-voltage cell; a filter block (8) for the protection of the equipment in the central station from network interference, properly dimensioned to the power of the downstream transformer (7); two network analyzers (27) integrated by Modbus in the central system with the role of storing information regarding the power supply of the two sections (DC and AC), information such as active power, reactive power, power factor, energy, harmonic distortion factor (THD), voltage and currents. a galvanic isolation block (11) in the form of an isolation transformer with the role of protecting (isolating) the alternating current circuit that supplies one, two or more controlled switching elements (12) that allow the starting or stopping of the bridges. recovery when the central station needs additional decks; one, two or more conversion blocks c.a. to c.c. (15) in the form of non-controlled (modular) three-phase rectification bridges, rated to power of at least 25kVA including filter blocks (16); one or more switching units (contactors) ordered (17) and (18) for the direct current circuit as an output from the rectifier decks whose role is to parallel the output of at least two recovery decks, with the final purpose of double power arrangement on a single satellite; a projection block through fuse separators (19) installed on the DC outlet. for each satellite with a short-circuit and overload protection role; this protection block will contain two fuse units for each recovery bridge; a protection block with fuse separators installed on the AC inlet. for the alternative charging circuit (10), this protection block may contain at least one protection set for LI, L2, L3, N in the form of a drawer with handle for separation; one or more switching blocks for each satellite (14); these switching blocks can take over the overload and short circuit protection function provided in the last point; two systems of bars for supplying rectifying bridges and the alternating charging circuit, consisting of bars of number 4 in number, namely section and length connected to each other by connection and switching / protection elements; a cooling block (21) consisting of radiators mounted on the recovery axles, coupled to controlled fans, by air circuits (22) as well as heating resistive elements (20) for the entire enclosure; ((-2015-- 00814ι ι ais a distribution block and projection internal consumption of the central station (29), consisting of electrical panels, automatic switches, differential switches, surge protections and grounding; a central unit of command and control (31) with the following functions to be limited to them: satellite monitoring and control, monitoring and control of recovery decks, monitoring and control of protective functions (ventilation and heating), retrieval of data from those two units of network analyzer type, communication with the central or individual HM1 unit from satellites, communication in OCPP protocol with a back-office software / database; ten or more photovoltaic panel units (2) with a power between 240 and 300W installed on the roof of the central station or in the vicinity, with the additional power supply of the internal circuits of the central station; a solar-photovoltaic MPPT type conversion unit (4a) with the role of converting the energy from the sun through the photovoltaic panels into alternating current energy, directly connected to the network through the bar network on the secondary transformer; a computer unit of data-logger type (4b) with the role of monitoring the performances of the photovoltaic generator system; one or more enclosures (56a) and (56b) for satellites of type 1XCA and ICC or 2XCC (claim 2 and 3) designed at an acceptable volume for both constructive variants: with Ix feed in c.c. and Ix alignment in c.a. or 2x DC feed; 2. SATELLITE TYPE LOAD STATES according to Claim 1, CHARACTERIZED THAT THE SATELLITE IS CONTAINED FROM AN EXIT OF C.A. IF ONE OF C.A. a logic unit type controller (39) with the role of control and communication with the electric machine in the charging mode in c.a. IEC standard 3 mode, it receives status information from the electric machine and controls the charging stop or start; a contactor switching unit (37), controlled by the logic unit (39) with the role of putting the electric machine in contact with the network and thus starting the charging; a c.c.-c.c. conversion unit chopper type (47) with the role of varying the voltage in c.c. from 50 to 500V depending on the order of the electric car; a logic control unit for DC direct current control (CHAdeMO, CCS) that can be included in the conversion unit driver (37); a contactor type switching unit (45), controlled by the DC-DC conversion unit. with the role of putting the electric machine in contact with the DC circuit to start charging; two projection units at short circuit and overload (38) and (49) properly sized; two overvoltage protection units (48) for the AC circuit. and separately for the DC, connected to the earth socket (55) through the connecting element (51); ¢ 2015-- 008141 1 -11- 2015 a thermal projection assembly (50) consists of a fully automated fan and heating resistor for protection in extreme climatic conditions including radiator and forced cooling for the DC-DC converter. (47); a set of equipment with user interface role: emergency stop button (44), touch screen interface (42), RFID or PIN card reader interface (43), PLC logic unit (40); two compatible sockets: type 2 mod 3 IEC mother connector for AC power supply (36) and type 2 mod 4 CCS / CHAdeMO for fast charging in direct current (46); two cable units (35) and (52) instead of elements (36) and (46), connected directly to the contactors (37) and (45), for both technologies - type 2 mode 3 IEC for AC power supply (34) and type 2 mode 4 CCS or CHAdeMO (53) for DC charging; 3. SATELLITE TYPE CHARGING STATION ACCORDING TO CLAIM 1, CHARACTERIZED THAT THE SATELLITE IS CONTAINED FROM TWO OUTPUTS OF C.C. three switching units contactor type (58), (59) and (60), controlled by the logic unit (64) with the role of putting the electric machine in contact with the network and thus starting the continuous current charging mode 4 or through 1 unit power (25 or 50kW) or 2 units of power (50 or lOOkW); two c.c.-c.c. conversion units chopper type (62) and (63) with the role of varying the voltage in c.c. from 50 to 500V depending on the order of the electric machine dimensioned at least 25kW; a logic load control unit (64) on the DC circuit with the control role of the two conversion units (62) and / or (63), either individually or in parallel by the CHAdeMO or CCS standard and by control of switching units (58), (59) and (60); two short-circuit and overload protection units (65) and (66) properly sized; an overvoltage projection unit (67) for both DC circuits, connected to the earth socket (55) through the connecting element (68); a thermal protection assembly (50) consists of a fully automated fan and heating resistor for protection in extreme climatic conditions including radiator and forced cooling for the DC-DC converter. (61); a set of equipment with user interface role: emergency stop button (44), touch screen interface (42), RFID or PIN card reader interface (43), PLC logic unit (40); two compatible sockets: type 2 mod 4 CCS or CHAdeMO for fast charging in direct current (57a) or (57b); two cable units (52) instead of elements (57a) and (57b), connected directly to the contactors (58) and (60), for both technologies - type 2 mode 4 CCS (54) or CHAdeMO (53) for current charging continuously.