A method for determining when a connection of a power system to a grid has been disconnected. The method includes the power system supplying a first amount of reactive power to the grid to which the power system is connected, and the power system determining if there is a frequency change within the grid. This includes if the frequency change does not exceed a predetermined threshold, the power system supplying a second amount of reactive power to the grid, and if the frequency exceeds a predetermined threshold, the power system supplying a first amount of reactive power to the grid.

A method for determining when a connection of a power system to a grid has been disconnected. The method includes the power system supplying a first amount of reactive power to the grid to which the power system is connected, and the power system determining if there is a frequency change within the grid. This includes if the frequency change does not exceed a predetermined threshold, the power system supplying a second amount of reactive power to the grid, and if the frequency exceeds a predetermined threshold, the power system supplying a first amount of reactive power to the grid.

A includes a plurality of power supply units, a processor, and a non-transitory computer readable medium having instructions stored thereon that, when engaged by the processor, cause performance of a set of functions. The set of functions includes detecting an overcurrent of a first power supply unit of the plurality of power supply units. The set of functions includes determining that the overcurrent of the first power supply unit corresponds to current sharing between the plurality of power supply units. The set of functions includes in response to determining that the overcurrent of the first power supply corresponds to the current sharing, suppressing an overcurrent protection mode of the first power supply.

Cooling device 1, in particular a freezer 2, having a closable cooling space 3, an electrically operated cooling circuit, and preferably a cold storage pack 4, wherein the at least one closable cooling space 3 and the cold storage pack 4 can be cooled by the electrically operated cooling circuit. The cooling device has a power distributor 5 for distributing electrical power of at least one regenerative power source 6 to an electrically operated cooling circuit of the cooling device 1 and to at least one further electricity consuming device 7. In addition, the power distributor 5 has a control system with a computing unit 23, a memory 24 and priority logic. The priority logic is used to preferentially supply the electrically operated cooling circuit of the cooling device 1 with electricity if there is a lack of electrical power of the at least one regenerative power source 6.

Cooling device 1, in particular a freezer 2, having a closable cooling space 3, an electrically operated cooling circuit, and preferably a cold storage pack 4, wherein the at least one closable cooling space 3 and the cold storage pack 4 can be cooled by the electrically operated cooling circuit. The cooling device has a power distributor 5 for distributing electrical power of at least one regenerative power source 6 to an electrically operated cooling circuit of the cooling device 1 and to at least one further electricity consuming device 7. In addition, the power distributor 5 has a control system with a computing unit 23, a memory 24 and priority logic. The priority logic is used to preferentially supply the electrically operated cooling circuit of the cooling device 1 with electricity if there is a lack of electrical power of the at least one regenerative power source 6.

A control system includes a plurality of subsystems each operative to perform a unique vehicle function, a plurality of electronic controllers each operative to individually control at least one of the plurality of subsystems, wherein a number of subsystems is greater than a number of controllers, and a plurality of switching devices each operative to selectively connect any one of the plurality of subsystems to any one of the plurality of electronic controllers.

A control system includes a plurality of subsystems each operative to perform a unique vehicle function, a plurality of electronic controllers each operative to individually control at least one of the plurality of subsystems, wherein a number of subsystems is greater than a number of controllers, and a plurality of switching devices each operative to selectively connect any one of the plurality of subsystems to any one of the plurality of electronic controllers.

A module controller and a method for controlling operation of power producing modules in a power producing system are provided. The module controller comprises a processor and a memory, configured to store instructions, which when executed by the processor performs the method by causing the module controller to identify each power producing module connected to the module controller, retrieve a control logic for and associated with each of the identified power producing modules, determining the order in which the power producing modules are to be controlled by the module controller, allocate processor time to each power producing module and control the operation of each power producing module by executing, in the processor, the associated control logic.

An electric vehicle solar charging system is disclosed, comprising a photovoltaic system or a DC source to transmit DC electricity to an electric vehicle via DC/DC conversion system. The DC/DC conversion is configured to directly transmit power to a battery pack configured to power the electric vehicle through the electric vehicle's DC charging inputs. This electricity can be supplemented by building battery or energy storage systems with DC output, or by DC electricity converted from AC which was supplied by AC sources. The combined circuit can be further modified by an in-line DC/DC converter at output if necessary, which also may be a bidirectional converter to supply energy from the EV back to the house load through a connected AC/DC inverter. When no DC is available, an AC power source can optionally provide supplemental power to the electric vehicle directly through the AC charging inputs.

An electric vehicle solar charging system is disclosed, comprising a photovoltaic system or a DC source to transmit DC electricity to an electric vehicle via DC/DC conversion system. The DC/DC conversion is configured to directly transmit power to a battery pack configured to power the electric vehicle through the electric vehicle's DC charging inputs. This electricity can be supplemented by building battery or energy storage systems with DC output, or by DC electricity converted from AC which was supplied by AC sources. The combined circuit can be further modified by an in-line DC/DC converter at output if necessary, which also may be a bidirectional converter to supply energy from the EV back to the house load through a connected AC/DC inverter. When no DC is available, an AC power source can optionally provide supplemental power to the electric vehicle directly through the AC charging inputs.