Method, system, machine and devices for managing electricity supply to a mining and / or construction machine

Abstract

A system comprising a configurable grid connector connecting a mining and / or construction machine to an electric power source and a grid connector controller controlling the configurable grid connector is provided. The grid connector controller configures the configurable grid connector to provide electrical power to the mining and / or construction machine such that one or more criteria is fulfilled.

Description

[0001] METHOD, SYSTEM, MACHINE AND DEVICES FOR MANAGING ELECTRICITY SUPPLY TO A MINING AND / OR CONSTRUCTION MACHINE

[0002] TECHNICAL FIELD

[0003] Embodiments herein relate to a system for managing electricity supply to a mining and / or construction machine. Further, embodiments herein relate to a method for managing electricity supply to a mining and / or construction machine by controlling a configurable grid connector. Embodiments herein further relate to a configurable grid connector, a grid connector controller and a mining and / or construction machine for managing electricity supply to a mining and / or construction machine.

[0004] BACKGROUND

[0005] In mining and construction, there is a constant ongoing process of improving efficiency, productivity and safety. Examples of changes and / or improvements that are carried out to an increasing extent, especially in mining, is the automation, fully or partly, of various processes occurring in mining. Methods for localization, mapping, control and motion planning have enabled development and deployment of fully or partly autonomous vehicles and / or mining and / or construction machines. Further, a transition to electrically powered mining and / or construction machines is ongoing. This is an important step to reduce emissions of e.g., carbon dioxide. Further, with electrically powered mining and / or construction machines, exhaust fumes decrease in the mines and tunnels. This may lead to an improved work environment and lower ventilation requirements.

[0006] Electrically powered mining and / or construction machines introduce new requirements for electrical infrastructure in the mining environment, as well as electrical equipment on mining and / or construction machines. Mining and / or construction machines must be able to handle the electrical power, voltage and current provided from the electrical infrastructure.

[0007] Consequently, there is a need for improvements in handling the electricity management at mining and / or construction machines.

[0008] SUMMARY As part of developing embodiments herein a problem has been identified and will first be discussed.

[0009] A problem at electrical mining and / or construction machines sites relates to electricity handling. More specifically handling of electricity provided from an electrical power source. With the ongoing electrification of mining and / or construction machines, there is challenges with providing electricity to the mining and / or construction machines. The electrical infrastructure may provide electricity at different voltages at different mining and / or construction sites. This means that a mining and / or construction machine configured to operate at site with a first input voltage will not be able to operate at a site with a second input voltage level. One way to solve this problem is provide a mining and / or construction machine with a component, such as power converter, configured to cover wide input voltage range. However, this results in a very heavy and bulky power system.

[0010] An object of embodiments herein is to provide a mechanism that improves the electricity management in a mining and / or construction machine. The object is achieved by the independent claims.

[0011] According to a first aspect, the object is achieved by a system. The system comprises a configurable grid connector connecting a mining and / or construction machine to an electric power source and a grid connector controller controlling the configurable grid connector. The grid connector controller configures the configurable grid connector to provide electrical power to the mining and / or construction machine such that one or more criteria is fulfilled.

[0012] In this way, it is possible to improve the electricity management in a mining and / or construction machine by configuring the configurable grid connector to provide electrical power according to the one or more criteria to the mining and / or construction machine. This since it enables a simple and flexible way to adapt the electrical power provided to the need of the mining and / or construction machine.

[0013] In some exemplary embodiments, the one or more criteria comprises any one or more out of an electrical current demand criterion, an electrical voltage demand and / or rating criterion, and an electrical power demand criterion. In some exemplary embodiments, the grid connector controller determines a configuration for the configurable grid connector. The configuration fulfills the one or more criteria.

[0014] This allows a flexible mechanism to control the electrical power provided to the mining and / or construction machine, since the configuration is based on the one or more criteria, and thus the electrical power characteristics, such as voltage, current and / or power, may be adapted based on changes in the one or more criteria. Further, the electrical power characteristics, such as voltage, current and / or power, may be maintained in response to fluctuations in electricity provided from the electrical power source by changing the configurations.

[0015] In some exemplary embodiments, the grid connector controller measures any one or more out of an input voltage provided to the configurable grid connector from the electrical power source, and an output voltage provided from the configurable grid connector to the mining and / or construction machine. The grid connector controller determines the configuration based on the measurements.

[0016] In this way the configuration may be adapted such that electrical power provided to the mining and / or construction machine fulfills the criteria, resulting in an efficient and flexible electricity management.

[0017] In some exemplary embodiments, the grid connector controller determines the configuration by selecting one or more modules comprised in the configurable grid connector and setting one or more switches comprised in the configurable grid connector such that the one or more criteria is fulfilled.

[0018] This allows an efficient mechanism to control the electrical power provided to the mining and / or construction machine, by enabling a flexible way to configure the configurable grid connector through the selection of the one or more modules and connecting the modules to fulfill the one or more criteria.

[0019] In some exemplary embodiments, setting the one or more switches comprises connecting a plurality of selected modules in series and / or parallel.

[0020] In this way the modules may be connected in the most efficient way to provide electrical power fulfilling the one or more criteria.

[0021] In some exemplary embodiments, the grid connector controller configures the configurable grid connector to any one or more out of adapt the output voltage based on a change in power flow to the mining and / or construction machine, adapt the power flow to the mining and / or construction machine based on a change in input voltage to the configurable grid connector, and maintain an output voltage during an input voltage sag. In this way an improved electricity management in the mining and / or construction machine is achieved, by the flexibility in configuring the configurable grid connector to continuously provide electrical power to the mining and / or construction machine that fulfills the one or more criteria under changing conditions.

[0022] In some exemplary embodiments, configuring the configurable grid connector comprises connecting a plurality of modules comprised in the configurable grid connector such the one or more criteria is fulfilled.

[0023] This allows an efficient mechanism to control the electrical power provided to the mining and / or construction machine, by enabling a flexible way to configure the configurable grid connector through the connection of the one or more modules and connecting the modules to fulfill the one or more criteria.

[0024] In some exemplary embodiments, the configurable grid connector comprises a plurality of modules. A module comprises any one out of a passive element, or an active element.

[0025] In some exemplary embodiments, the configurable grid connector is connected two or more electrical power sources.

[0026] In this way, the electricity management in the mining and / or construction machine is improved by allowing to switch between different power sources, or combine two different power sources in order to provide electrical power that fulfills the one or more criteria to the mining and / or construction machine.

[0027] In some exemplary embodiments, the electrical power source comprises any one out of an electrical power grid, or an electrical energy storage.

[0028] In some exemplary embodiments, the configurable grid connector connects two or more mining and / or construction machines to the electrical power source.

[0029] In some exemplary embodiments, the respective mining and / or construction machines are associated with respective one or more criteria. The grid connector controller configures the configurable grid connector to provide electrical power to the respective mining and / or construction machines fulfilling the respective one or more criteria.

[0030] According to a second aspect, the object is achieved by a method for reconfigurable voltage and current supply connections for a mining and / or construction machine being supplied with electrical power from an electric power source.

[0031] The method comprises obtaining one or more criteria associated with electrical power for operating the mining and / or construction machine. The method comprises configuring a configurable grid connector to provide electrical power to the mining and / or construction machine such that one or more criteria is fulfilled. The configurable grid connector connects the mining and / or construction machine to the electrical power source.

[0032] In this way, it is possible to improve the electricity management in a mining and / or construction machine by configuring the configurable grid connector to provide electrical power according to the one or more criteria to the mining and / or construction machine. This since it enables a simple and flexible way to adapt the electrical power provided to the need of the mining and / or construction machine.

[0033] In some exemplary embodiments, the one or more criteria comprises any one or more out of an electrical current demand criterion, an electrical voltage demand and / or rating criterion, and an electrical power demand criterion.

[0034] In some exemplary embodiments, the method further comprises determining a configuration for a configurable grid connector. The configuration fulfills the one or more criteria.

[0035] This allows a flexible mechanism to control the electrical power provided to the mining and / or construction machine, since the configuration is based on the one or more criteria, and thus the electrical power characteristics, such as voltage, current and / or power, may be adapted based on changes in the one or more criteria. Further, the electrical power characteristics, such as voltage, current and / or power, may be maintained in response to fluctuations in electricity provided from the electrical power source by changing the configurations.

[0036] In some exemplary embodiments, determining the configuration comprises measuring any one or more out of an input voltage provided to the configurable grid connector from the electrical power source, and an output voltage provided to from the configurable grid connector to the mining and / or construction machine. The configuration is based on the measurement.

[0037] In this way the configuration may be adapted such that electrical power provided to the mining and / or construction machine fulfills the criteria, resulting in an efficient and flexible electricity management.

[0038] In some exemplary embodiments, determining the configuration comprises selecting one or more modules comprised in the configurable grid connector and setting one or more switches comprised in the configurable grid connector such the one or more criteria is fulfilled. This allows an efficient mechanism to control the electrical power provided to the mining and / or construction machine, by enabling a flexible way to configure the configurable grid connector through the selection of the one or more modules and connecting the modules to fulfill the one or more criteria.

[0039] In some exemplary embodiments, setting the one or more switches comprises connecting a plurality of selected modules in series and / or parallel.

[0040] In this way the modules may be connected in the most efficient way to provide electrical power fulfilling the one or more criteria.

[0041] In some exemplary embodiments, configuring the configurable grid connector comprises configuring the configurable grid connector to any one or more out of adapting the output voltage based on a change in power flow to the mining and / or construction machine, adapting the power flow to the mining and / or construction machine based on a change in input voltage to the configurable grid connector, and maintain an output voltage during an input voltage sag.

[0042] In this way an improved electricity management in the mining and / or construction machine is achieved, by the flexibility in configuring the configurable grid connector to continuously provide electrical power to the mining and / or construction machine that fulfills the one or more criteria under changing conditions.

[0043] In some exemplary embodiments, configuring the configurable grid connector comprises configuring the configurable grid connector to set one or more switches connecting modules comprised in the configurable grid connector such the one or more criteria is fulfilled.

[0044] In some exemplary embodiments, the configurable grid connector comprises a plurality of modules. A module comprises any one out of a passive element, or an active element.

[0045] In some exemplary embodiments, the configurable grid connector is connected two or more electrical power sources.

[0046] In this way, the electricity management in the mining and / or construction machine is improved by allowing to switch between different power sources, or combine two different power sources in order to provide electrical power that fulfills the one or more criteria to the mining and / or construction machine.

[0047] In some exemplary embodiments, the electrical power source comprises any one out of an electrical power grid, or an electrical energy storage.

[0048] In some exemplary embodiments, the configurable grid connector connects two or more mining and / or construction machines to the electrical power source. In some exemplary embodiments, the respective mining and / or construction machines are associated with respective one or more criteria. The configurable grid connector to provide electrical power to the respective mining and / or construction machines fulfilling the respective one or more criteria.

[0049] According to a third aspect, the object is achieved by a mining and / or construction machine connected to a system according to the first aspect. The system comprises a configurable grid connector and a grid connector controller.

[0050] In some exemplary embodiments, any one or more of the configurable grid connector and the grid connector controller is comprised in the mining and / or construction machine.

[0051] Advantages and effects of the mining and / or construction machine are analogous to the advantages and effects of the system of the first aspect and / or of the method of the second aspect. Further, all embodiments of the mining and / or construction machine are applicable to and combinable with all embodiments of the system of the first aspect and / or the method of the second aspect, such as any one or more out of the above-mentioned exemplary embodiments, and vice versa.

[0052] According to a fourth aspect, the object is achieved by a grid connector controller configured to handle reconfigurable voltage and current supply connections for a mining and / or construction machine being supplied with electrical power from an electric power source.

[0053] The grid connector controller is configured to determine one or more requirements for operating the mining and / or construction machine.

[0054] The grid connector controller is configured to configure a configurable grid connector to provide electrical power fulfilling the one or more criteria to the mining and / or construction machine. The configurable grid connector is adapted to connect the mining and / or construction machine to the electrical power source. The one or more criteria is associated with the one or more requirements.

[0055] Advantages and effects of the grid connector controller are analogous to the advantages and effects of the system of the first aspect, the method of the second aspect and / or of the mining and / or construction machine of the third aspect. Further, all embodiments of the mining and / or construction machine are applicable to and combinable with all embodiments of the system of the first aspect, the method of the second aspect and / or of the mining and / or construction machine of the third aspect, such as any one or more out of the above-mentioned exemplary embodiments, and vice versa. According to a fifth aspect, the object is achieved by a configurable grid connector connecting an electrical power source to a mining and / or construction machine. The configurable grid connector comprises a plurality of modules. The modules comprise active and / or passive elements. The configurable grid connector is configured to apply a configuration for providing electrical power fulfilling the one or more criteria to the mining and / or construction machine. The configuration is obtained from a grid connector controller.

[0056] Advantages and effects of the grid connector controller are analogous to the advantages and effects of the system of the first aspect, the method of the second aspect, the mining and / or construction machine of the third aspect and / or of the grid connector controller of the fourth aspect. Further, all embodiments of the mining and / or construction machine are applicable to and combinable with all embodiments of the system of the first aspect, the method of the second aspect, the mining and / or construction machine of the third aspect and / or of the grid connector controller of the fourth aspect, such as any one or more out of the above-mentioned exemplary embodiments, and vice versa.

[0057] Further advantages and advantageous features of embodiments herein are disclosed in the following detailed description and in the dependent claims.

[0058] BRIEF DESCRIPTIONS OF DRAWINGS

[0059] Examples of embodiments herein are described in more detail with reference to attached drawings in which:

[0060] Figure 1 shows an example of a system according to embodiments herein.

[0061] Figure 2 shows an example of a system according to embodiments herein.

[0062] Figure 3 shows an example of a system according to embodiments herein.

[0063] Figure 4 shows an example of a system according to embodiments herein.

[0064] Figure 5 shows an example of a system according to embodiments herein.

[0065] Figure 6 shows an example of a grid connector according to embodiments herein. Figure 7 shows an example of a grid connector according to embodiments herein. Figure 8 shows a flowchart depicting embodiments of a method according to embodiments herein.

[0066] Figure 9 shows an example of a mining and / or construction machine according to embodiments herein.

[0067] Figure 10 shows an example of a mining and / or construction machine according to embodiments herein. Figure 11 shows schematic block diagrams illustrating embodiments of a grid connector controller.

[0068] DETAILED DESCRIPTION

[0069] An object of embodiments herein is to provide a mechanism that improves the electricity management in a mining and / or construction machine. The object is achieved by the independent claims.

[0070] Figure 1 shows an example of a system according to embodiments herein. The system comprises a grid connector controller 11 and a configurable grid connector 12. The grid connector is situated between an electrical power source 20 and a mining and / or construction machine 1. In other words, the configurable grid connector 12 is connected to the power source 20 and the mining and / or construction machine 1 , and electricity, such as electrical power, is provided to the mining and / or construction machine 1 from the electrical power source 20 via the configurable grid connector 12. The electrical power source 20 may e.g., comprise either of an electrical power grid or an electrical energy storage. The grid connector controller 11 is connected to the configurable grid connector 12 and controls the configurable grid connector 12 by configuring the configurable grid connector 12 to provide electricity, such as electrical power, the mining and / or construction machine 1 such that one or more criteria is fulfilled. The connection between the grid connector controller 11 and the configurable grid connector 12 may be a wired connection or a wireless connection. In some examples, both a wired connection and a wireless connection is implemented between the grid connector controller 11 and the configurable grid connector 12, e.g., for redundancy.

[0071] Figure 2 shows an example of a system according to embodiments herein. The system comprises the grid connector controller 11 and the configurable grid connector 12. The grid connector is situated between the electrical power source 20 and in this example two mining and / or construction machines 1. In other words, the configurable grid connector 12 is connected to the power source 20 and the two mining and / or construction machines 1, and electricity, such as electrical power, is provided to the two mining and / or construction machines 1 from the electrical power source 20 via the configurable grid connector 12. The electrical power source may e.g., comprise either of an electrical power grid or an electrical energy storage. The grid connector controller 11 is connected to the configurable grid connector 12 and controls the configurable grid connector 12 by configuring the configurable grid connector 12 provide electricity, such as electrical power, the two mining and / or construction machines 1. The respective two mining and / or construction machines 1 may have different requirements on the electricity, such as electrical power, they need to operate. Thus, the grid connector controller 11 may configure the configurable grid connector 12 to provide electrical power to the two mining and / or construction machines 1, where the electrical power fulfils different respective one or more criteria for the respective two mining and / or construction machines 2. Though this example refers to a configuration with two mining and / or construction machines 1, it is equally applicable to a scenario with more than two mining and / or construction machines 1 , or a single mining and / or construction machine 1 comprising two or more electrical power consumers with different requirements on the electricity, such as electrical power, they need to operate. As mentioned above, the connection between the grid connector controller 11 and the configurable grid connector 12 may be a wired connection or a wireless connection. In some examples, both a wired connection and a wireless connection is implemented between the grid connector controller 11 and the configurable grid connector 12, e.g., for redundancy.

[0072] Figure 3 shows an example of a system according to embodiments herein. The system comprises the grid connector controller 11 and the configurable grid connector 12. The grid connector is situated between two electrical power sources, electrical power source 20a and electrical power source 20b, and the mining and / or construction machine 1. In other words, the configurable grid connector 12 is connected to the power sources 20a, 20b and the mining and / or construction machine 1 , and electricity, such as electrical power, is provided to the mining and / or construction machine 1 from the electrical power sources 20a, 20b via the configurable grid connector 12. The grid connector controller 11 is connected to the configurable grid connector 12 and controls the configurable grid connector 12 by configuring the configurable grid connector 12 provide electricity, such as electrical power, the mining and / or construction machine 1. The electrical power sources 20a, 20b may be different electrical power sources. E.g., the electrical power source 20a may comprise an electrical power grid and the electrical power source 20b may comprise different electrical power grid or an electrical energy storage, such as a battery. The electrical power source 20b may e.g., be comprised in or on the mining and / or construction machine 1. Alternatively, the electrical power source 20b may e.g., be located separate from the mining and / or construction machine 1. The grid connector controller 11 may configure the configurable grid connector 12 to use the electrical power source 20a, the electrical power source 20b. Which one is use, or if both are used, may depend on availability and / or the one or criteria to be fulfilled. E.g., the electrical power source 20b may be used for redundancy, i.e., as a backup, if the electrical power source 20a is unavailable. As mentioned above, the connection between the grid connector controller 11 and the configurable grid connector 12 may be a wired connection or a wireless connection. In some examples, both a wired connection and a wireless connection is implemented between the grid connector controller 11 and the configurable grid connector 12, e.g., for redundancy.

[0073] Figure 4 shows an example of a system according to embodiments herein. The system comprises the grid connector controller 11 and the configurable grid connector 12. The grid connector is situated between the electrical power source 20a one side and the mining and / or construction machine 1 and an electrical energy storage 20b on the other side. In other words, the configurable grid connector 12 is connected to the power source 20a, the mining and / or construction machine 1 and the electrical energy storage 20b, and electricity, such as electrical power, is provided to the mining and / or construction machine 1 and the electrical energy storage 20b from the electrical power sources 20a via the configurable grid connector 12. The grid connector controller 11 is connected to the configurable grid connector 12 and controls the configurable grid connector 12 by configuring the configurable grid connector 12 provide electricity, such as electrical power, the mining and / or construction machine 1 and electrical energy storage 20b. The electrical energy storage 20b may e.g., comprise as a battery. The electrical energy storage 20b may e.g., be comprised in or on the mining and / or construction machine 1. Alternatively, the electrical energy storage 20b may e.g., be located separate from the mining and / or construction machine 1. Thus, the grid connector controller 11 may configure the configurable grid connector 12 to provide electrical power to the mining and / or construction machine 1 and the electrical energy storage 20b, where the electrical power fulfils different respective one or more criteria for the mining and / or construction machine 1 and the electrical energy storage 20b. Though this example refers to a configuration with one mining and / or construction machine 1 and one electrical energy storage 20b, it is equally applicable to a scenario with more than two mining and / or construction machines 1 and / or electrical energy storages 20b, or a single mining and / or construction machine 1 comprising two or more electrical power consumers with different requirements on the electricity, such as electrical power, they need to operate. As mentioned above, the connection between the grid connector controller 11 and the configurable grid connector 12 may be a wired connection or a wireless connection. In some examples, both a wired connection and a wireless connection is implemented between the grid connector controller 11 and the configurable grid connector 12, e.g., for redundancy.

[0074] Figure 5 shows an example of a system according to embodiments herein. This example is a combination of the examples described above with reference to Fig. 3 and Fig. 4. In this example, an electrical energy storage 20b may operate as both as a load, i.e. , an electrical energy storage receiving electricity from the electrical power source 20a, and as an energy source from which the mining and / or construction machine 1 receives electrical power via the grid connector 11. The system comprises the grid connector controller 11 and the configurable grid connector 12. The grid connector is situated between the electrical power source 20a one side and the mining and / or construction machine one the other side. Further, the electrical energy storage 20b is connected to the configurable grid connector 12 on both sides, i.e., both as a provider and as a receiver of electricity. In other words, the configurable grid connector 12 is connected to the power source 20a, the mining and / or construction machine 1 and the electrical energy storage 20b, and electricity, such as electrical power, is provided to the mining and / or construction machine 1 and / or the electrical energy storage 20b from the electrical power sources 20a via the configurable grid connector 12. Alternatively, electricity, such as electrical power, is provided to the mining and / or construction machine 1 from the electrical energy storage 20b. The grid connector controller 11 is connected to the configurable grid connector 12 and controls the configurable grid connector 12 by configuring the configurable grid connector 12 provide electricity, such as electrical power, the mining and / or construction machine 1 and / or to the electrical energy storage 20b, from the electrical power source 20a. Alternatively, the grid connector controller 11 is connected to the configurable grid connector 12 and controls the configurable grid connector 12 by configuring the configurable grid connector 12 provide electricity, such as electrical power, the mining and / or construction machine 1 from the electrical energy storage 20b. The electrical energy storage 20b may e.g., comprise as a battery. The electrical energy storage 20b may e.g., be comprised in or on the mining and / or construction machine 1. Alternatively, the electrical energy storage 20b may e.g., be located separate from the mining and / or construction machine 1. Thus, the grid connector controller 11 may configure the configurable grid connector 12 to provide electricity, such as electrical power, from the electrical power source 20a, to the mining and / or construction machine 1 and / or the electrical energy storage 20b, where the electricity, such as electrical power, fulfils different respective one or more criteria for the mining and / or construction machine 1 and the electrical energy storage 20b. Alternatively, the grid connector controller 11 may configure the configurable grid connector 12 to provide electricity, such as electrical power, from the electrical energy storage 20b, to the mining and / or construction machine 1 , where the electricity, such as electrical power, fulfils one or more criteria. Though this example refers to a configuration with one mining and / or construction machine 1 and one electrical energy storage 20b, it is equally applicable to a scenario with more than two mining and / or construction machines 1 and / or electrical energy storages 20b, or a single mining and / or construction machine 1 comprising two or more electrical power consumers with different requirements on the electricity, such as electrical power, they need to operate. As mentioned above, the connection between the grid connector controller 11 and the configurable grid connector 12 may be a wired connection or a wireless connection. In some examples, both a wired connection and a wireless connection is implemented between the grid connector controller 11 and the configurable grid connector 12, e.g., for redundancy.

[0075] Fig. 6 shows an example of a grid connector, such as the configurable grid connector 12, according to embodiments herein. The configurable grid connector 12 comprises a number of modules 13. In this example, the grid connector comprises nine modules 13. The grid connector further comprises a number of controllable switches 14, such as breakers, disconnectors etc., connecting the modules 13 with each other, as well as with the input (left side) and output (right side) of the configurable grid connector 12. The switches are shown as circles in Fig. 6. A module 13 may comprise passive and / or active elements and / or controllable switches. Thus a module may defined as a component comprising one or more active element, passive element and / or controllable switch. The configurable grid connector 12 may comprise modules 13 comprising a variety of passive and / or active elements. An active element, or component, may e.g., comprise one or more diode, integrated circuit, Metal Oxide Semiconductor Field Effect Transistor (MOSFET), Junction Field Effect Transistor (JFET) and / or any other type of transistor. A passive element may e.g., comprise a capacitor, an inductor and / or a resistor. A module may further comprise one or more internal controllable switches, i.e., a switch comprised in the module, such as breakers, disconnectors etc. The internal switches may be used to connect any active and or passive elements comprised in the module. In other words, each module may comprise active elements, passive elements and / or controllable switches in any number and combination. E.g., a module may comprise 1) one or more active elements and optionally one or more controllable switches, 2) one or more passive elements and optionally one or more controllable switches, 3) one or more active elements and one or more passive elements and optionally one or more controllable switches.

[0076] The configurable grid connector 12 may be configured to fulfil the one or more criteria by setting switches, such as controllable switches between modules and / or controllable switches inside the modules, to connect the output with the input. One or more modules 13 may be part of the connection.

[0077] Fig. 6 only shows a single input and a single output. However, as mentioned above, more than one electrical power source 20, such as the electrical power grid 20a and / or one or more electrical energy storages 20b, 20c may be connected to as a provider of electricity, such as electrical power. Further, also as mentioned above, more than one mining and / or construction machine 1 and / or electrical energy storage 20b, 20c may be connected to the configurable grid connector 12 as a consumer of electricity, such as electrical power, provided from the configurable grid connector 12. Thus, the configurable grid connector 12 may comprise further inputs and / or outputs, as well as switches connecting the inputs and / or outputs to the modules, the ones shown in Fig. 6.

[0078] The configurable grid connector 12 may e.g., be configured to use one or more of the connected electrical power sources 20 simultaneously. Further, the configurable grid connector 12 may be configured to provide electricity, such as electrical power, to one or more than connected mining and / or construction machine 1 at simultaneously.

[0079] Fig. 7 shows an example of a grid connector, such as the configurable grid connector 12 and a grid connector controller, such as the grid connector 11 , according to embodiments herein. The grid connector controller 11 may measure e.g., input voltage provided to the configurable grid connector 12 and / or output voltage provided from the configurable grid connector 12. The measurements may e.g., be used by the grid connector controller 11 for determining a configuration the fulfils the one or more criteria for electricity, such as electrical power, to be provided to a mining and / or construction machine 1.

[0080] Fig. 8 shows an example embodiment of a method for reconfigurable voltage and current control for the mining and / or construction machine 1. The mining and / or construction machine 1 is being supplied with electrical power from an electric power source, such as the electrical power source 20. The method may e.g., be performed by a grid connector controller, such as the grid connector controller 11. The method comprises the following actions, which may be taken in any suitable order. Optional actions are referred to as dashed boxes in Fig. 8.

[0081] Action 801

[0082] One or more criteria associated to electrical power for operating the mining and / or construction machine 1 is obtained. The one or more criteria may be obtained by the grid connector controller 11. The one or more criteria may be obtained from the mining and / or construction machine 1. Thus, the grid connector controller 11 may communicate with the mining and / or construction machine 1, or a control unit comprised in the mining and / or construction machine 1 , in order to obtain the one or more criteria. The grid connector controller 11 may e.g., request the one or more criteria from the mining and / or construction machine 1 , or control unit comprised in the mining and / or construction machine 1 , and receive the one or more criteria in response to the request. Alternatively, or additionally, the grid connector controller 11 may obtain, such as receive, the one or more criteria in response to a change in the one or more criteria that may have been previously obtained.

[0083] In some embodiments, the one or more criteria comprises any one or more out of an electrical current demand criterion, an electrical voltage demand and / or rating criterion, and / or an electrical power demand criterion. The electrical voltage demand and / or rating criterion may e.g., comprise a minimum voltage required, such as a minimum voltage to be provided to the mining and / or construction machine 1. Alternatively, or additionally, the electrical voltage demand and / or rating criterion may e.g., comprise a maximum voltage criterion, such as a maximum voltage to be provided to the mining and / or construction machine 1. Alternatively, or additionally, the electrical voltage demand and / or rating criterion may e.g., comprise a voltage rating criterion, such as a voltage rating of the mining and / or construction machine 1. The electrical current demand criterion may e.g., comprise a minimum current required, such as a minimum current to be provided to the mining and / or construction machine 1. Alternatively, or additionally, the electrical current demand criterion may e.g., comprise a maximum current criterion, such as a maximum current to be provided to the mining and / or construction machine 1. The electrical power demand criterion may e.g., comprise a minimum power required, such as a minimum power to be provided to the mining and / or construction machine 1. Alternatively, or additionally, the electrical power demand criterion may e.g., comprise a maximum power criterion, such as a maximum power to be provided to the mining and / or construction machine 1.

[0084] In some embodiments, in the case two or more mining and / or construction machines 1 , or alternatively at least one mining and / or construction machine 1 and at least one electrical energy storage 20b, is connected to the configurable grid connector 12, the respective mining and / or construction machines 1 and / or electrical energy storages 20b are associated with respective one or more criteria. The configurable grid connector 12 is to provide electrical power to the respective mining and / or construction machines 1 and / or electrical energy storages 20b fulfilling the respective one or more criteria. In this case, obtaining the one or more criteria comprises obtaining respective one or criteria for the respective mining and / or construction machines 1 and / or electrical energy storages 20b. In other words, each of the two or more mining and / or construction machines 1 , or alternatively at least one mining and / or construction machine 1 and at least one electrical energy storage 20b, are associated with separate one or more criteria. In an example with two mining and / or construction machines 1 , a first of the two or more mining and / or construction machines 1 is associated with first one or more criteria and a second of the two or more mining and / or construction machines 1 is associated with second one or more criteria. In another example with one mining and / or construction machine 1 and one electrical energy storage 20b, the mining and / or construction machine 1 s associated with first one or more criteria and the electrical energy storage 20b is associated with second one or more criteria. This allows the two or more mining and / or construction machines 1 , or alternatively at least one mining and / or construction machine 1 and at least one electrical energy storage 20b, to be provided with electricity, such as electrical power, according to different one or more criteria. Thus, the grid connector controller 11 may configure the configurable grid connector 12 to provide electricity, such as electrical power, to two or more mining and / or construction machines 1 , or alternatively at least one mining and / or construction machine 1 and at least one electrical energy storage 20b, where the respective mining and / or construction machines 1 and / or electrical energy storages 20b are associated with different one or more criteria. In this case,

[0085] Action 802

[0086] In some embodiments, a configuration for a configurable grid connector 12 is determined. The configuration fulfills the one or more criteria. The configuration may be determined by the grid connector controller 11. In other words, the configuration is determined, e.g., by the grid connector controller 11 , taking the one or more criteria into account. As mentioned above, the grid connector may be connected to two or more mining and / or construction machines 1. Thus, the configuration may be determined to fulfill the respective one or more criteria of the two or more mining and / or construction machines 1.

[0087] In an example, a criterion may comprise voltage criteria of certain voltage level. The grid connector controller 11 may then determine a configuration for the grid connector such that the mining and / or construction machine 1 is provided with electricity, such as electrical power, at the certain voltage level. This may further comprise measuring an input voltage of electricity provided from the electrical source 20 to the configurable grid connector 12. Based on the measured input voltage and the certain voltage, according to the criterion, the grid connector controller 12 may select a number of modules and determine the setting of a number of switches in the configurable grid connector 12 such that the output voltage from the grid connector satisfies the voltage criterion. The grid connector controller 11 may then configure the configurable grid connector 12 e.g., by applying the determined configuration to the configurable grid connector 12.

[0088] In some embodiments, determining the configuration comprises measuring any one or more out of an input voltage provided to the configurable grid connector 12 from the electrical power source 20, and / or an output voltage provided to from the configurable grid connector 12 to the mining and / or construction machine 1. The configuration may be based on the measurements. The input voltage provided to the configurable grid connector 12 may e.g., mean the voltage of the electricity provided from the electrical power source 20 to the configurable grid connector 12. The output voltage provided from the configurable grid connector 12 to the mining and / or construction machine 1 may e.g., mean the voltage of the electricity provided by the configurable grid connector 12 to the mining and / or construction machine 1. In some examples of embodiments herein where two or more mining and / or construction machines 1 is connected to the configurable grid connector 12, and where the configurable grid connector 12 provides, or is to provide, electricity, such as electrical power, to the two or more mining and / or construction machines 1, the measurement may comprise the respective output voltage provided to the two or more mining and / or construction machines 1. Thus, the measurement may comprise more than one output voltage measurement.

[0089] In some embodiments, determining the configuration comprises selecting one or more modules comprised in the configurable grid connector 12 and setting one or more switches comprised in the configurable grid connector 12 such the one or more criteria is fulfilled. This may mean that determining the configuration comprises determining the configuration of the selected one or more modules, such as how the selected one or more modules is to be connected, to provide electricity, such as electrical power, the mining and / or construction machine 1 by setting the one or more switches. Determining the configuration may further comprise selecting the number of modules to use.

[0090] Setting the one or more switches may comprise connecting a plurality of selected modules in series and / or parallel. As mentioned above, the configurable grid connector 12 may comprise controllable switches outside modules, e.g., for connecting modules and the input and output of the configurable grid connector 12, as well as controllable switches inside the modules. Setting the one or more switches may comprise setting either switches outside the modules, setting switches inside the modules, or setting switches both inside and outside the modules. The setting of the switches may depend on the one or more criteria to be fulfilled. As an example, when three modules are selected, switches may be set such that all three modules are connected in series or parallel. In another example, switches may set such that two modules are connected in parallel, which in turn are connected in series with the third module. In yet another example, two modules connected in series, are in turn connected in parallel with the module. The preceding examples may further comprise setting one or more switches inside at least one of the modules. The use of three modules in the examples above is only for illustrative purpose, and not intended as a limitation. The number of modules used is only limited by the number of available modules comprised in the configurable grid connector 12.

[0091] Determining the configuration may further comprise determining the configuration when more than one mining and / or construction machine 1 and / or electrical energy storage 20b is connected to the configurable grid connector 12.

[0092] Action 803

[0093] The configurable grid connector 12 is configured to provide electrical power to the mining and / or construction machine 1 such that one or more criteria is fulfilled. The configurable grid connector 12 connects the mining and / or construction machine 1 to the electrical power source 20. Configuring the configurable grid connector 12 may comprise applying the determined configuration. E.g., the grid connector controller 11 may apply the determined configuration to the configurable grid connector 12.

[0094] In some embodiments, configuring the configurable grid connector 12 comprises configuring the configurable grid connector 12 to any one or more out of: adapting the output voltage based on a change in power flow to the mining and / or construction machine 1 , adapting the power flow to the mining and / or construction machine 1 based on a change in input voltage to the configurable grid connector 12, and maintain an output voltage during an input voltage sag. E.g., the grid connector controller 11 may continuously, or periodically, measure the input voltage to, and / or output voltage from, the configurable grid connector 12. Thus, a voltage sag, such as a voltage drop, may be detected. In response to this, the configurable grid connector 12 may need to be reconfigured to provide electricity, such as electrical power, fulfilling the one or more criteria. The grid connector controller 11 may determine a configuration, and configure the configurable grid connector 12 e.g., by applying the configuration to the configurable grid connector 12, that compensates for the detected voltage sag. This way the mining and / or construction machine 1 may still be provided with electricity, such as electrical power, that fulfils the one or more criteria. Alternatively, or additionally, the power flow to the mining and / or construction machine 1 may be adapted, such as increased, decreased and / or limited, based on the input voltage to the configurable grid connector 12. Adapting the output voltage based on a power flow to the mining and / or construction machine 1 may e.g., comprise determining the configuration based on an electrical power flow criterion, such as a minimum required electrical power. The output voltage may be determined such that the criterion is fulfilled, and the configuration is thus determined such that electricity, such as electrical power, is provided to the mining and / or construction machine at the determined output voltage.

[0095] In some embodiments, configuring the configuration to the configurable grid connector 12 comprises setting one or more switches connecting modules comprised in the configurable grid connector 12 such the one or more criteria is fulfilled. The setting of the switches may depend on the one or more criteria to be fulfilled. As an example, when three modules are selected, switches may be set such that all three modules are connected in series or parallel. In another example, switches may set such that two modules are connected in parallel, which in turn are connected in series with the third module. In yet another example, two modules connected in series, are in turn connected in parallel with the module. The use of three modules in the examples above is only for illustrative purpose, and not intended as a limitation. The number of modules used is only limited by the number of available modules comprised in the configurable grid connector 12.

[0096] Fig. 9 shows an example of a mining and / or construction machine 1. Examples of a mining and / or construction machine 1 may e.g., comprise a mine truck, a drill rigg, a load haul dump (LHD) machine and / or a utility machine. The mining and / or construction machine 1 is connected to the system described above, such as the system comprising the grid connector controller 11 and the configurable grid connector 12. In this example, the mining and / or construction machine 1 comprises the configurable grid connector 12 and the grid connector controller 11. In some examples, the mining and / or construction machine 1 comprises an electrical energy storage, such as the electrical energy storage 20b (not shown).

[0097] Fig. 10 shows an example of a mining and / or construction machine 1. Examples of a mining and / or construction machine 1 may e.g., comprise a mine truck, a drill rigg, a load haul dump (LHD) machine and / or a utility machine. The mining and / or construction machine 1 is connected to the system described above, such as the system comprising the grid connector controller 11 and the configurable grid connector 12. In this example, the mining and / or construction machine 1 comprises the configurable grid connector 12. The grid connector controller 11 is comprised outside of the mining and / or construction machine 1 , and preferably connected to the mining and / or construction machine 1 and / or configurable grid connector 12. In some examples, the mining and / or construction machine 1 comprises an electrical energy storage, such as the electrical energy storage 20b (not shown).

[0098] The grid connector controller 11 may comprise an arrangement depicted in Fig. 11. To perform embodiments herein, e.g. the method according to actions 801-803 above, the grid connector controller 11 is configured to handle reconfigurable voltage and current supply connection for a mining and / or construction machine 1 being supplied with electrical power from an electric power source 20.

[0099] The grid connector controller 11 may comprise an input and output interface 1100 e.g. configured to communicate with each other. The input and output interface 1100 may comprise a wireless or wired receiver not shown, a transceiver, one or more antennas, and / or a wired or wireless transmitter not shown.

[0100] The embodiments herein may be implemented through a respective processor or one or more processors, such as at least one processor 1110 of a processing circuitry in the grid connector controller 11 depicted in Figure 11 , together with computer program code for performing the functions and actions of the embodiments herein. The program code mentioned above may also be provided as a computer program product, for instance in the form of a data carrier carrying computer program code for performing the embodiments herein when being loaded into the grid connector controller 11. One such carrier may be in the form of a CD ROM disc. It is however feasible with other data carriers such as a memory stick. The computer program code may furthermore be provided as pure program code on a server and downloaded to the grid connector controller 11.

[0101] The grid connector controller 11 and / or processor 1110 is configured to handle reconfigurable voltage and current control for the mining and / or construction machine 1 being supplied with electrical power from an electric power source 20.

[0102] The grid connector controller 11 and / or processor 1110 is configured to determine one or more requirements for operating the mining and / or construction machine 1.

[0103] The grid connector controller 11 and / or processor 1110 is configured to configure a configurable grid connector 12 to provide electrical power fulfilling the one or more criteria to the mining and / or construction machine 1. The configurable grid connector 12 is adapted to connect the mining and / or construction machine 1 to the electrical power source 20. The one or more criteria is associated with the one or more requirements.

[0104] The grid connector controller 11 may further comprise a memory 1120 comprising one or more memory units. The memory 1120 comprises instructions executable by the processor 1110 in the grid connector controller 11. The memory 1120 is arranged to be used to store e.g. information, configurations, criteria, measurements, estimation, and applications to perform the methods herein when being executed in the grid connector controller 11.

[0105] In some embodiments, a computer program 1130 comprises instructions, which when executed by the respective at least one processor 1110, cause the at least one processor 1110 of the grid connector controller 11 to perform the actions above.

[0106] In some embodiments, a computer readable medium 1140 comprises instructions, which when executed by the respective at least one processor 1110, cause the at least one processor 1110 of the grid connector controller 11 to perform the actions above.

[0107] In some embodiments, a respective carrier 1150 comprises the respective computer program 1130 and / or computer readable medium 1140, wherein the carrier 1150 is one of an electronic signal, an optical signal, an electromagnetic signal, a magnetic signal, an electric signal, a radio signal, a microwave signal, or a computer- readable storage medium.

[0108] Thus, embodiments herein may disclose the grid connector controller 11 configured to handle reconfigurable voltage and current control for a mining and / or construction machine 1 being supplied with electrical power from an electric power source 20. The grid connector controller 11 comprises the processor 1110 and the memory 1120, said memory 1120 comprising instructions executable by said processor 1110 whereby said grid connector controller 11 is operative to perform any of the methods herein.

[0109] As will be readily understood by those familiar with communications design, that functions means or modules may be implemented using digital logic and / or one or more microcontrollers, microprocessors, or other digital hardware. In some embodiments, several or all of the various functions may be implemented together, such as in a single application-specific integrated circuit (ASIC), or in two or more separate devices with appropriate hardware and / or software interfaces between them. Several of the functions may be implemented on a processor shared with other functional components of a base station, for example.

[0110] Alternatively, several of the functional elements of the processing means discussed may be provided through the use of dedicated hardware, while others are provided with hardware for executing software, in association with the appropriate software or firmware. Thus, the term “processor” or “controller” as used herein does not exclusively refer to hardware capable of executing software and may implicitly include, without limitation, digital signal processor (DSP) hardware, read-only memory (ROM) for storing software, random-access memory for storing software and / or program or application data, and non-volatile memory. Other hardware, conventional and / or custom, may also be included. Designers of communications receivers will appreciate the cost, performance, and maintenance trade-offs inherent in these design choices.

[0111] Any appropriate steps, methods, features, functions, or benefits disclosed herein may be performed through one or more functional units or modules of one or more virtual apparatuses. Each virtual apparatus may comprise a number of these functional units. These functional units may be implemented via processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include digital signal processors (DSPs), special-purpose digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as read-only memory (ROM), random-access memory (RAM), cache memory, flash memory devices, optical storage devices, etc. Program code stored in memory includes program instructions for executing one or more telecommunications and / or data communications protocols as well as instructions for carrying out one or more of the techniques described herein. In some implementations, the processing circuitry may be used to cause the respective functional unit to perform corresponding functions according one or more embodiments of the present disclosure. It will be appreciated that the foregoing description and the accompanying drawings represent non-limiting examples of the methods and apparatus taught herein. As such, the apparatus and techniques taught herein are not limited by the foregoing description and accompanying drawings. Instead, the embodiments herein are limited only by the following claims and their legal equivalents. It will be appreciated that the foregoing description and the accompanying drawings represent non-limiting examples of the methods and apparatus taught herein. As such, the apparatus and techniques taught herein are not limited by the foregoing description and accompanying drawings. Instead, the embodiments herein are limited only by the following claims and their legal equivalents.

Claims

CLAIMS1. A system comprising:- a configurable grid connector (12) connecting a mining and / or construction machine (1) to an electric power source (20),- a grid connector controller (11) controlling the configurable grid connector (12), wherein the grid connector controller (11) configures the configurable grid connector (12) to provide electrical power to the mining and / or construction machine (1) such that one or more criteria is fulfilled.

2. The system according to claim 1, wherein the one or more criteria comprises any one or more out of:- an electrical current demand criterion,- an electrical voltage demand or rating criterion, and- an electrical power demand criterion.

3. The system according to any of claims 1-2, wherein the grid connector controller (11) determines a configuration for the configurable grid connector (12), which configuration fulfills the one or more criteria.

4. The system according to claim 3, wherein the grid connector controller (11) measures any one or more out of:- an input voltage provided to the configurable grid connector (12) from the electrical power source (20), and- an output voltage provided from the configurable grid connector (12) to the mining and / or construction machine (1), wherein the grid connector controller (11) determines the configuration based on the measurements.

5. The system according to any of claims 3-4, wherein the grid connector controller (11) determines the configuration by selecting one or more modules comprised in the configurable grid connector (12) and setting one or more switches comprised in the configurable grid connector (12) such the one or more criteria is fulfilled.

6. The system according to claim 5, wherein setting the one or more switches comprises connecting a plurality of selected modules in series and / or parallel.

7. The system according to any preceding claim, wherein the grid connector controller (11) configures the configurable grid connector (12) to any one or more out of:- adapt the output voltage based on a change in power flow to the mining and / or construction machine (1),- adapt the power flow to the mining and / or construction machine (1) based on a change in input voltage to the configurable grid connector (12), and- maintain an output voltage during an input voltage sag.

8. The system according to any preceding claim, wherein configuring the configurable grid connector (12) comprises connecting a plurality of modules comprised in the configurable grid connector (12) such the one or more criteria is fulfilled.

9. The system according to any of the preceding claims, wherein the configurable grid connector (12) comprises a plurality of modules, wherein a module comprises any one out of:- a passive element, or- an active element.

10. The system according to any preceding claim, wherein the configurable grid connector (12) is connected two or more electrical power sources (20).

11. The system according to any preceding claim, wherein the electrical power source (20) comprises any one out of:- an electrical power grid (20a), or- an electrical energy storage (20b).

12. The system according to any preceding claim, wherein the configurable grid connector (12) connects two or more mining and / or construction machines (1) to the electrical power source (20).

13. The system according to claim 12, wherein the respective mining and / or construction machines (1) are associated with respective one or more criteria, and wherein the grid connector controller (11) configures the configurable grid connector (12)to provide electrical power to the respective mining and / or construction machines (1) fulfilling the respective one or more criteria.

14. A method for reconfigurable voltage and current supply connection for a mining and / or construction machine (1) being supplied with electrical power from an electric power source (20), the method comprising: obtaining (801) one or more criteria associated to electrical power for operating the mining and / or construction machine (1), configuring (803) a configurable grid connector (12) to provide electrical power to the mining and / or construction machine (1) such that one or more criteria is fulfilled, which configurable grid connector (12) connects the mining and / or construction machine (1) to the electrical power source (20).

15. The method according to claim 14, wherein the one or more criteria comprises any one or more out of:- an electrical current demand criterion,- an electrical voltage demand or rating criterion, and- an electrical power demand criterion.

16. The method according to claim any of claims 14-15, the method further comprising: determining (802) a configuration for a configurable grid connector (12), which configuration fulfills the one or more criteria.

17. The method according to claim 16, wherein determining (802) the configuration comprises measuring any one or more out of:- an input voltage provided to the configurable grid connector (12) from the electrical power source (20), and- an output voltage provided to from the configurable grid connector (12) to the mining and / or construction machine (1), wherein the configuration is based on the measurements.

18. The method according to any of claims 16-17, wherein determining (802) the configuration comprises selecting one or more modules comprised in the configurable gridconnector (12) and setting one or more switches comprised in the configurable grid connector (12) such the one or more criteria is fulfilled.

19. The method according to claim 18, wherein setting the one or more switches comprises connecting a plurality of selected modules in series and / or parallel.

20. The method according to any of claims 14-19, wherein configuring (803) the configurable grid connector (12) comprises configuring the configurable grid connector (12) to any one or more out of:- adapting the output voltage based on a change in power flow to a mining and / or construction machine (1),- adapting the power flow to a mining and / or construction machine (1) based on a change in input voltage to the configurable grid connector (12), and- maintain an output voltage during an input voltage sag.

21. The method according to any of claims 14-20, wherein configuring (803) the configurable grid connector (12) comprises configuring the configurable grid connector (12) to set one or more switches connecting modules comprised in the configurable grid connector (12) such the one or more criteria is fulfilled.

22. The method according to any of claims 14-21 , wherein the configurable grid connector (12) comprises a plurality of modules, wherein a module comprises any one out of:- a passive element, or- an active element.

23. The method according to any of claims 14-22, wherein the configurable grid connector (12) is connected two or more electrical power sources (20).

24. The method according to any of claims 14-23, wherein the electrical power source (20) comprises any one out of:- an electrical power grid (20a), or- an electrical energy storage (20b).

25. The method according to any of claims 14-24, wherein the configurable grid connector (12) connects two or more mining and / or construction machines (1) to the electrical power source (20).

26. The method according to claim 25, wherein the respective mining and / or construction machines (1) are associated with respective one or more criteria, and wherein the configurable grid connector (12) to provide electrical power to the respective mining and / or construction machines (1) fulfilling the respective one or more criteria.

27. A mining and / or construction machine (1) connected to a system (1) according to claim 1, the system comprising a configurable grid connector (12) and a grid connector controller (11).

28. The mining and / or construction machine (1) according to claim 27, wherein any one or more of the configurable grid connector (12) and the grid connector controller (11) is comprised in the mining and / or construction machine (1).

29. A grid connector controller (11) configured to handle reconfigurable voltage and current supply connection for a mining and / or construction machine (1) being supplied with electrical power from an electric power source (20), the grid connector controller (11) further being configured to: determine one or more requirements for operating the mining and / or construction machine (1), configure a configurable grid connector (12) to provide electrical power fulfilling the one or more criteria to the mining and / or construction machine (1), which configurable grid connector (12) is adapted to connect the mining and / or construction machine (1) to the electrical power source (20), wherein the one or more criteria is associated with the one or more requirements.

30. The grid connector controller (11) according to claim 29, wherein the grid connector controller is configured to perform the method according to any of claims 14-26.

31. A configurable grid connector (12) connecting an electrical power source (20) to a mining and / or construction machine (1), the configurable grid connector (12) comprising a plurality of modules, which modules comprises active and / or passive elements, whereinthe configurable grid connector (12) is configured to apply a configuration for providing electrical power fulfilling the one or more criteria to the mining and / or construction machine (1), which configuration is obtained from a grid connector controller (11) according to claim 27.

32. A computer program (1130) comprising instructions, which when executed by a processor (1110), causes the processor (1110) to perform actions according to any of the claims 14-26.

33. A computer-readable medium (1140) comprising instructions, which when executed by a processor (1110), causes the processor (1110) to perform actions according to any of the claims 14-26.

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