EP4537437A1 - A controller - Google Patents

A controller

Info

Publication number
EP4537437A1
EP4537437A1 EP23733224.2A EP23733224A EP4537437A1 EP 4537437 A1 EP4537437 A1 EP 4537437A1 EP 23733224 A EP23733224 A EP 23733224A EP 4537437 A1 EP4537437 A1 EP 4537437A1
Authority
EP
European Patent Office
Prior art keywords
electrical bus
electrical
bus
current
coupled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23733224.2A
Other languages
German (de)
French (fr)
Inventor
Mark Potter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3TI Energy Hubs Ltd
Original Assignee
3TI Energy Hubs Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3TI Energy Hubs Ltd filed Critical 3TI Energy Hubs Ltd
Publication of EP4537437A1 publication Critical patent/EP4537437A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/12—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load
    • H02J3/14—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load by switching loads on to, or off from, the networks, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H02J2101/24—Photovoltaics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks

Definitions

  • the present invention relates to a controller, in particular a controller for providing phase balancing to a three phase power supply.
  • An electrical grid power supply is usually provided via a three phase alternating current (AC) supply, where each phase is shifted by 120 degrees with respect to the other phases.
  • AC alternating current
  • circuits attached to the power supply are preferably designed to provide equal loads on each phase to provide a balanced load, thereby reducing power losses.
  • the present invention provides a controller for performing phase balancing to a three phase power supply to allow phase balancing between different phases of a multi-phase power supply to be adjusted dynamically.
  • the controller is arranged to dynamically perform phase balancing in response to changes in loads placed on different phases of the multi-phase power supply.
  • Figure 1 illustrates a schematic of a phase balancing system in accordance with an aspect of the present invention.
  • Figure 1 illustrates a three phase mains supply 101, otherwise known as a grid supply, to which is coupled a three phase electrical bus, which include three electrical buses 107, 108, 109 and a neutral 110.
  • a respective current sensor 102 for example a current transformer, which are coupled to a controller 121, where the controller is arranged to monitor the current on each of the electrical busses 107, 108, 109 using the current sensor 102 readings.
  • coupled to the three phase electrical bus will be one or more fixed, uncontrolled electrical loads, which in the present embodiment include a first load and a second load.
  • the first load is a three phase device that is coupled to each of the three electrical buses 107, 108, 109.
  • the second load is a single phase device that is coupled to one of the electrical buses 107, 108, 109 and neutral 110.
  • the load on the first load and the second load are fixed and uncontrolled. In other words, the current load for the first load and the second load cannot be dynamically varied remotely from the respective loads.
  • the present embodiment illustrates two uncontrolled loads being coupled to the three phase mains supply 101, any combination of uncontrolled loads may be coupled to the three phase mains supply 101 or none at all.
  • the uncontrolled loads are coupled to the three phase mains supply, the uncontrolled loads are arranged to be balanced across the three electrical phases of the three phase mains supply, in other words, the uncontrolled loads result in a load on each of the three phases that is substantially the same.
  • operation or deactivation of the respective uncontrolled loads may result in a load imbalance, for example if one of the uncontrolled loads is a heater, operation of the heater may cause a load imbalance depending on the state of other loads connected to the three phase electrical bus.
  • one or more electric vehicle, EV, charging ports 113, 114, 115, 116, 117, 118, 119, 110 are coupled to the three phase electrical bus 107, 108, 109, 110 to support single phase AC charging of an EV or three phase AC charging.
  • the EV charging ports will be controlled loads, where the controller can dynamically vary the load that each EV charging port imparts on the electrical system. For example, if an EV charging port is being used to charge an EV that is causing a load imbalance between the different electrical busses 107, 108, 109, the controller 121 can dynamically vary the power provided by the EV charging port to reduce the load imbalance.
  • the controller 121 can control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
  • the three phase electrical bus is coupled to a DC bus 111, 112 via an AC/DC converter 105 that can act as an inverter and/or rectifier.
  • a photovoltaic, PV, panel 106 that is arranged to generate an electrical current when exposed to sunlight.
  • the PV panel will be connected to the DC bus via power control electronics, for example a maximum power point tracker, a DC:DC converter or a pulse width modulation, PWM, controller.
  • a DC battery (not shown) is also coupled to the DC bus 111, 112 for storing charge from the three phase mains supply and/or the PV panel 106.
  • the battery may be directly or indirectly connected to the DC bus. If the battery is indirectly connected to the DC bus typically this will be via power control electronics.
  • the PV panel 106 will typically comprise an array of PV panels, as such any reference to PV panel includes an array of PV panels or any other PV panel configuration, for example where one or more maximum power point tracking controllers are coupled to one or more PV arrays.
  • the controller 121 is arranged to monitor the current load on each of the electrical buses 107, 108, 109, wherein the controller 121 is arranged to control the AC/DC converter 105, acting as an inverter, to provide current generated by the PV panel 106 on to one or more of the electrical busses 107, 108, 109 if the current difference between the electrical busses 107, 108, 109 exceeds a predetermined threshold, thereby allowing the current loads on each of the electrical busses 107, 108, 109 to be balanced.
  • the predetermined threshold may be selected based on the electrical bus/load configuration and the electrical losses that may be acceptable resulting from a load imbalance between the electrical busses 107, 108, 109.
  • the current difference between the electrical busses 107, 108, 109 will be substantially zero.
  • the current generated by the PV panel 106 can be used to balance the current loads between the electrical busses 107, 108, 109 by directing current from the PV panel 106 to one or more of the electrical busses 107, 108, 109. This can also provide the advantage of allowing an EV to be charged using less power from the three phase mains supply 101 than otherwise would be used.
  • the controller can be arranged to provide current from the battery, via the AC/DC converter operating as an inverter, on to one or more of the electrical busses 107, 108, 109.
  • the controller 121 can direct current from the battery to one or more of the electrical busses 107, 108, 109 to supplement the current generated by the PV panel 106 to allow the current loads on each of the electrical busses 107, 108, 109 to be balanced.
  • the controller 121 may be configured to control the AC/DC converter 105 to balance the current load on the electrical bus by providing current from one or more of the electrical busses 107, 108, 109 to another one or more of the electrical busses 107, 108, 109, if the current difference between any one of the electrical busses 107, 108, 109 exceeds a predetermined threshold value to substantially balance the current load on the electrical bus.
  • the controller 121 may be configured to balance the current load by transferring current from one electrical bus to another electrical bus if the current generated by the PV panel 106 is not sufficient to fully balance a current imbalance on the electrical bus.
  • the controller can reduce a phase/load imbalance between the electrical buses 107, 108, 109 by controlling a controller load coupled to the electrical bus, by directing current from the P V panel 106 to one or more electrical buses, by directing current from the battery to one or more electrical buses and/or diverting current from one electrical bus to another electrical bus.
  • a controller for providing phase balancing for a three phase power supply wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the controller comprises a device for monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, wherein the device is arranged to control the inverter to provide current generated by the at least one PV panel to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
  • the device is arranged to control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.
  • the device is arranged to control a rectifier coupled to the first electrical bus, the second electrical bus and the third electrical bus and the inverter for providing current from one of the first electrical bus, the second electrical bus and the third electrical bus to another one of the electrical buses if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
  • a rectifier coupled to the first electrical bus, the second electrical bus and the third electrical bus and the inverter for providing current from one of the first electrical bus, the second electrical bus and the third electrical bus to another one of the electrical buses if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
  • a controller for providing phase balancing for a three phase power supply wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus
  • the controller comprises a device for monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, wherein the device is arranged to control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.
  • a method for providing phase balancing for a three phase power supply wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the method comprises monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, and controlling the inverter to provide current generated by the at least one PV panel to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
  • a method for providing phase balancing for a three phase power supply wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the method comprises monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, and controlling current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Control Of Electrical Variables (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Inverter Devices (AREA)

Abstract

A controller for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the controller comprises a device for monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, wherein the device is arranged to control the inverter to provide current generated by the at least one PV panel to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.

Description

A CONTROLLER
BACKGROUND
The present invention relates to a controller, in particular a controller for providing phase balancing to a three phase power supply.
An electrical grid power supply is usually provided via a three phase alternating current (AC) supply, where each phase is shifted by 120 degrees with respect to the other phases.
To aid the reduction of losses within the electrical grid power supply, circuits attached to the power supply are preferably designed to provide equal loads on each phase to provide a balanced load, thereby reducing power losses.
However, with the recent increase in interest in the use of electric vehicles (EV) and the need to rapidly charge a large number of EVs at random intervals, this can result in electrical loads supported on each phase of the electrical grid power supply frequently being changed, which can cause large electrical load imbalances within the electrical grid power supply.
It is desirable to improve this situation.
In accordance with an aspect of the present invention there is provided a controller and method according to the accompanying claims.
The present invention provides a controller for performing phase balancing to a three phase power supply to allow phase balancing between different phases of a multi-phase power supply to be adjusted dynamically. In particular, the controller is arranged to dynamically perform phase balancing in response to changes in loads placed on different phases of the multi-phase power supply.
The present invention will now be described, by way of example, with reference to the accompanying drawings in which: Figure 1 illustrates a schematic of a phase balancing system in accordance with an aspect of the present invention.
In accordance with an embodiment of the present invention, Figure 1 illustrates a three phase mains supply 101, otherwise known as a grid supply, to which is coupled a three phase electrical bus, which include three electrical buses 107, 108, 109 and a neutral 110.
Coupled to each of the three electrical buses 107, 108, 109 is a respective current sensor 102, for example a current transformer, which are coupled to a controller 121, where the controller is arranged to monitor the current on each of the electrical busses 107, 108, 109 using the current sensor 102 readings.
Typically, coupled to the three phase electrical bus will be one or more fixed, uncontrolled electrical loads, which in the present embodiment include a first load and a second load. The first load is a three phase device that is coupled to each of the three electrical buses 107, 108, 109. The second load is a single phase device that is coupled to one of the electrical buses 107, 108, 109 and neutral 110. As stated above, the load on the first load and the second load are fixed and uncontrolled. In other words, the current load for the first load and the second load cannot be dynamically varied remotely from the respective loads. Although the present embodiment illustrates two uncontrolled loads being coupled to the three phase mains supply 101, any combination of uncontrolled loads may be coupled to the three phase mains supply 101 or none at all. Preferably, if uncontrolled loads are coupled to the three phase mains supply, the uncontrolled loads are arranged to be balanced across the three electrical phases of the three phase mains supply, in other words, the uncontrolled loads result in a load on each of the three phases that is substantially the same. However, operation or deactivation of the respective uncontrolled loads may result in a load imbalance, for example if one of the uncontrolled loads is a heater, operation of the heater may cause a load imbalance depending on the state of other loads connected to the three phase electrical bus.
Additionally, one or more electric vehicle, EV, charging ports 113, 114, 115, 116, 117, 118, 119, 110 are coupled to the three phase electrical bus 107, 108, 109, 110 to support single phase AC charging of an EV or three phase AC charging. Preferably the EV charging ports will be controlled loads, where the controller can dynamically vary the load that each EV charging port imparts on the electrical system. For example, if an EV charging port is being used to charge an EV that is causing a load imbalance between the different electrical busses 107, 108, 109, the controller 121 can dynamically vary the power provided by the EV charging port to reduce the load imbalance. As such, the controller 121 can control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
The three phase electrical bus is coupled to a DC bus 111, 112 via an AC/DC converter 105 that can act as an inverter and/or rectifier.
Also coupled to the DC bus 111, 112 is a photovoltaic, PV, panel 106 that is arranged to generate an electrical current when exposed to sunlight. Typically the PV panel will be connected to the DC bus via power control electronics, for example a maximum power point tracker, a DC:DC converter or a pulse width modulation, PWM, controller. Preferably, a DC battery (not shown) is also coupled to the DC bus 111, 112 for storing charge from the three phase mains supply and/or the PV panel 106. The battery may be directly or indirectly connected to the DC bus. If the battery is indirectly connected to the DC bus typically this will be via power control electronics. The PV panel 106 will typically comprise an array of PV panels, as such any reference to PV panel includes an array of PV panels or any other PV panel configuration, for example where one or more maximum power point tracking controllers are coupled to one or more PV arrays.
As stated above, the controller 121 is arranged to monitor the current load on each of the electrical buses 107, 108, 109, wherein the controller 121 is arranged to control the AC/DC converter 105, acting as an inverter, to provide current generated by the PV panel 106 on to one or more of the electrical busses 107, 108, 109 if the current difference between the electrical busses 107, 108, 109 exceeds a predetermined threshold, thereby allowing the current loads on each of the electrical busses 107, 108, 109 to be balanced. The predetermined threshold may be selected based on the electrical bus/load configuration and the electrical losses that may be acceptable resulting from a load imbalance between the electrical busses 107, 108, 109. However, preferably the current difference between the electrical busses 107, 108, 109 will be substantially zero. For example, if one or more of the charge ports is being used to provide a single phase charge to an EV, which causes a phase imbalance between the electrical busses 107, 108, 109, in addition to or alternatively to controlling the current load of the one or more charge ports, the current generated by the PV panel 106 can be used to balance the current loads between the electrical busses 107, 108, 109 by directing current from the PV panel 106 to one or more of the electrical busses 107, 108, 109. This can also provide the advantage of allowing an EV to be charged using less power from the three phase mains supply 101 than otherwise would be used.
Preferably, to supplement current generated by the PV panel 106, the controller can be arranged to provide current from the battery, via the AC/DC converter operating as an inverter, on to one or more of the electrical busses 107, 108, 109. For example, if the controller 121 has identified a current/phase imbalance on the electrical bus and the current generated by the PV panel 106 is not sufficient to fully balance a current imbalance on the electrical bus, for example during bad weather when little power is generated by the PV panel 106 or at night time when no power is generated by the PV panel 106, the controller can direct current from the battery to one or more of the electrical busses 107, 108, 109 to supplement the current generated by the PV panel 106 to allow the current loads on each of the electrical busses 107, 108, 109 to be balanced.
Additionally, the controller 121 may be configured to control the AC/DC converter 105 to balance the current load on the electrical bus by providing current from one or more of the electrical busses 107, 108, 109 to another one or more of the electrical busses 107, 108, 109, if the current difference between any one of the electrical busses 107, 108, 109 exceeds a predetermined threshold value to substantially balance the current load on the electrical bus. For example, the controller 121 may be configured to balance the current load by transferring current from one electrical bus to another electrical bus if the current generated by the PV panel 106 is not sufficient to fully balance a current imbalance on the electrical bus.
Consequently, the controller can reduce a phase/load imbalance between the electrical buses 107, 108, 109 by controlling a controller load coupled to the electrical bus, by directing current from the P V panel 106 to one or more electrical buses, by directing current from the battery to one or more electrical buses and/or diverting current from one electrical bus to another electrical bus.
EMBODIMENTS
A controller for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the controller comprises a device for monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, wherein the device is arranged to control the inverter to provide current generated by the at least one PV panel to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
Preferably the device is arranged to control the inverter to provide current from a battery coupled to the DC bus to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
Preferably the device is arranged to control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus. Preferably the device is arranged to control a rectifier coupled to the first electrical bus, the second electrical bus and the third electrical bus and the inverter for providing current from one of the first electrical bus, the second electrical bus and the third electrical bus to another one of the electrical buses if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
A controller for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the controller comprises a device for monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, wherein the device is arranged to control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.
A method for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the method comprises monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, and controlling the inverter to provide current generated by the at least one PV panel to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus. Preferably further comprising controlling the inverter to provide current from a battery coupled to the DC bus to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
Preferably further comprising controlling current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.
Preferably further comprising controlling a rectifier coupled to the first electrical bus, the second electrical bus and the third electrical bus and the inverter for providing current from one of the first electrical bus, the second electrical bus and the third electrical bus to another one of the electrical buses if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
A method for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the method comprises monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, and controlling current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.

Claims

1. A controller for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the controller comprises a device for monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, wherein the device is arranged to control the inverter to provide current generated by the at least one PV panel to at least one of the first electrical bus, the second electrical bus and the third electrical bus and to control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.
2. A controller according to claim 1, wherein the device is arranged to control the inverter to provide current from a battery coupled to the DC bus to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
3. A controller according to any one of the preceding claims, wherein the device is arranged to control a rectifier coupled to the first electrical bus, the second electrical bus and the third electrical bus and the inverter for providing current from one of the first electrical bus, the second electrical bus and the third electrical bus to another one of the electrical buses if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
4. A method for providing phase balancing for a three phase power supply, wherein a first phase of the three phase power supply is coupled to a first electrical bus, a second phase of the three phase power supply is coupled to a second electrical bus, and a third phase of the three phase power supply is coupled to a third electrical bus, wherein the first electrical bus, the second electrical bus and the third electrical bus are coupled via an inverter to a direct current, DC, bus to which is coupled at least one photovoltaic, PV, panel, wherein the method comprises monitoring current in the first electrical bus, the second electrical bus and the third electrical bus, and controlling the inverter to provide current generated by the at least one PV panel at least one of the first electrical bus, the second electrical bus and the third electrical bus and to control current from an electric vehicle, EV, charging port to an EV if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus, wherein the EV charging port is coupled to the first electrical bus, the second electrical bus and/or the third electrical bus.
5. A method according to claim 4, further comprising controlling the inverter to provide current from a battery coupled to the DC bus to at least one of the first electrical bus, the second electrical bus and the third electrical bus if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
6. A method according to any one of claims 4 to 5, further comprising controlling a rectifier coupled to the first electrical bus, the second electrical bus and the third electrical bus and the inverter for providing current from one of the first electrical bus, the second electrical bus and the third electrical bus to another one of the electrical buses if the current difference between the first electrical bus, the second electrical bus and/or the third electrical bus exceeds a predetermined threshold value to substantially balance the current load on the first electrical bus, the second electrical bus and the third electrical bus.
EP23733224.2A 2022-06-13 2023-06-08 A controller Pending EP4537437A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2208595.5A GB2619910B (en) 2022-06-13 2022-06-13 A controller
PCT/EP2023/065374 WO2023242053A1 (en) 2022-06-13 2023-06-08 A controller

Publications (1)

Publication Number Publication Date
EP4537437A1 true EP4537437A1 (en) 2025-04-16

Family

ID=82496391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23733224.2A Pending EP4537437A1 (en) 2022-06-13 2023-06-08 A controller

Country Status (6)

Country Link
EP (1) EP4537437A1 (en)
CN (1) CN119422300A (en)
AU (1) AU2023293555A1 (en)
CA (1) CA3258519A1 (en)
GB (1) GB2619910B (en)
WO (1) WO2023242053A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008312360A (en) * 2007-06-15 2008-12-25 Hitachi Appliances Inc Power converter and module
US8410638B2 (en) * 2010-05-13 2013-04-02 Eaton Corporation Uninterruptible power supply systems and methods supporting load balancing
US10381942B1 (en) * 2011-10-11 2019-08-13 Juniper Networks, Inc. Balancing power distribution
US20130155738A1 (en) * 2011-12-19 2013-06-20 General Electric Company System and method for controlling reactive power in a power conversion system
KR101847490B1 (en) * 2013-03-19 2018-04-10 메루스 파워 다이나믹스 오와이 Method and apparatus for compensating non-active currents in electrical power networks
FR3018006B1 (en) * 2014-02-27 2018-04-06 Hager-Electro Sas CONTROLLED SWITCHING SYSTEM FOR SELECTIVE CONNECTION OF A THREE-PHASE ELECTRICAL SYSTEM
DE102018204157A1 (en) * 2018-03-19 2019-09-19 Mahle International Gmbh Method for charging electrical consumers
DE102018208396A1 (en) * 2018-05-28 2019-11-28 Mahle International Gmbh Method for operating a charging system with several charging points
DE102018214747B4 (en) * 2018-08-30 2026-02-05 Siemens Aktiengesellschaft Device for a low-voltage circuit
EP3782849A3 (en) * 2019-08-13 2021-03-03 Zaptec IP AS A dc charging device for an electric vehicle and for providing power management of a connected grid

Also Published As

Publication number Publication date
AU2023293555A1 (en) 2025-01-02
GB2619910B (en) 2024-07-24
WO2023242053A1 (en) 2023-12-21
CN119422300A (en) 2025-02-11
GB2619910A (en) 2023-12-27
GB202208595D0 (en) 2022-07-27
CA3258519A1 (en) 2023-12-21

Similar Documents

Publication Publication Date Title
EP2899606B1 (en) Power conditioner, and method for controlling same
US7352083B2 (en) Apparatus for and method of UPS operation
US20180191167A1 (en) Smart renewable energy system with grid and dc source flexibility
EP2548259B1 (en) Balancing the states of charge of charge accumulators
US9531297B2 (en) Solar power conversion system
CA2653938A1 (en) Power controller and vehicle equipped with power controller
US11594952B2 (en) Auxiliary power supply device for inverter, inverter, and method for starting the same
US11671031B1 (en) Split bus inverter architecture
JPH11289668A (en) Reactive power control device and reactive power control method
EP2710723A1 (en) Power generation system, power converter system, and method of operating power converter system
US9744875B2 (en) Motor vehicle, battery, and method for controlling a battery
WO2015092441A2 (en) Electricity generation
JP2021065008A (en) Self-supporting power supply system, power supply device, and control method of self-supporting power supply system
WO2022057991A1 (en) Multiple output energy storage
WO2023242053A1 (en) A controller
GB2628250A (en) A controller
GB2628251A (en) A controller
US20240178689A1 (en) Power supply including mutliple connected inverters
JP6415260B2 (en) Power conditioner, its control device and power system
US11070079B2 (en) Integrated power supply system for auxiliary services for power converters
US11716008B2 (en) Power conversion device
JP2001218368A (en) Power conversion device and photovoltaic power generation system
US20260042374A1 (en) A controller
Kim et al. Selective Control Algorithm for N-Phase Switching Power Pole of 4-Leg Interlinking Converter in AC/DC Hybrid Microgrid
CN118944138B (en) Method for generating a multiphase alternating current, circuit arrangement and energy supply system

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20241212

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)