A photovoltaic power generation system and a method for controlling power balance are provided. The system includes at least two photovoltaic arrays, at least one power balance circuit and a power converter. Each of input ports of the power balance circuit is connected with at least one photovoltaic array, and an output port of the power balance circuit is connected with the power converter. The power balance circuit performs power transfer based on a difference between output powers of the two photovoltaic arrays to control a difference between powers of two output terminals of the power balance circuit to be within a preset range.

A device, system, and method is disclosed for improving safety of a power system. For example, a differential current may be detected using at least one sensor by temporarily enabling sampling of current flowing through one or more conductors. Additionally, current flow may be temporarily altered in order to sample current in a system. The measurements may be handled locally and/or remotely and appropriate actions may be taken to enhance the overall safety of the system.

A device, system, and method is disclosed for improving safety of a power system. For example, a differential current may be detected using at least one sensor by temporarily enabling sampling of current flowing through one or more conductors. Additionally, current flow may be temporarily altered in order to sample current in a system. The measurements may be handled locally and/or remotely and appropriate actions may be taken to enhance the overall safety of the system.

This invention presents an electronically configurable architecture where the plurality of photovoltaic panels can be connected to deliver the maximum power output. This architecture provides maximum power point to the maximum number of photovoltaic panels by connecting them in parallel. Under-rated panels are dynamically coupled with over-rated or maximum-rated panels in a series-connected architecture to utilize the under rated power in the final delivery. Notable efficiency improvements may be observed in contrast to the prevailing optimization with minimum power drop out architecture. The architectural modifications are proposed with bi-stable electromagnetic changeover contacts to minimize the power dissipation in control side. Moreover the rearrangement in connection architecture is proposed to be communicated on instance and regular basis through SMS and SPI protocol for easy fault diagnosis by the service personnel from the proposed data mining firmware.

This invention presents an electronically configurable architecture where the plurality of photovoltaic panels can be connected to deliver the maximum power output. This architecture provides maximum power point to the maximum number of photovoltaic panels by connecting them in parallel. Under-rated panels are dynamically coupled with over-rated or maximum-rated panels in a series-connected architecture to utilize the under rated power in the final delivery. Notable efficiency improvements may be observed in contrast to the prevailing optimization with minimum power drop out architecture. The architectural modifications are proposed with bi-stable electromagnetic changeover contacts to minimize the power dissipation in control side. Moreover the rearrangement in connection architecture is proposed to be communicated on instance and regular basis through SMS and SPI protocol for easy fault diagnosis by the service personnel from the proposed data mining firmware.

A power battery cooling system of an electric vehicle, including: a cooling circuit configured for cooling a power battery of the electric vehicle; a solar sunroof; and a sunroof control unit configured for controlling the operation of the cooling circuit and the electric energy output of the solar sunroof; wherein the sunroof control unit is configured to start a power battery cooling operation based on the solar sunroof in the condition that the power battery is not in a high voltage output state and the temperature of the power battery is higher than a temperature threshold, the power battery cooling operation including: controlling the solar sunroof to output electric energy to the cooling circuit so that the cooling circuit performs the cooling of the power battery using the electric energy from the solar sunroof.

A power battery cooling system of an electric vehicle, including: a cooling circuit configured for cooling a power battery of the electric vehicle; a solar sunroof; and a sunroof control unit configured for controlling the operation of the cooling circuit and the electric energy output of the solar sunroof; wherein the sunroof control unit is configured to start a power battery cooling operation based on the solar sunroof in the condition that the power battery is not in a high voltage output state and the temperature of the power battery is higher than a temperature threshold, the power battery cooling operation including: controlling the solar sunroof to output electric energy to the cooling circuit so that the cooling circuit performs the cooling of the power battery using the electric energy from the solar sunroof.

A cable retention clip can include at least one body defining at least two of cable retention channels that are arranged to have parallel channel axes. Each cable retention channel has an inlet opening extending a length of the respective cable retention channel so that a lateral cross-section of each cable retention channel forms a C-shape. Each cable retention channel can be separated from an adjacent cable retention channel by a cable separator. The body also defines at least a pair of the cable retention channels forming a ω shape. The cable retention channels can include two cable retention channels having the same size. A cable arrangement can include the cable retention clip and at least two solar cables. A solar installation can include the cable arrangement and at least one solar panel operably coupled with at least one of the solar cables.

A cable retention clip can include at least one body defining at least two of cable retention channels that are arranged to have parallel channel axes. Each cable retention channel has an inlet opening extending a length of the respective cable retention channel so that a lateral cross-section of each cable retention channel forms a C-shape. Each cable retention channel can be separated from an adjacent cable retention channel by a cable separator. The body also defines at least a pair of the cable retention channels forming a ω shape. The cable retention channels can include two cable retention channels having the same size. A cable arrangement can include the cable retention clip and at least two solar cables. A solar installation can include the cable arrangement and at least one solar panel operably coupled with at least one of the solar cables.

A cable retention clip can include at least one clip body region defining at least two cable retention channels that are arranged to have parallel channel axes. Each cable retention channel has an inlet opening extending a length of the respective cable retention channel so that each cable retention channel forms a C-shape. Each cable retention channel can be separated from an adjacent cable retention channel by a cable separator member. The cable retention clip can also include at least two elongate resilient pillars that are spaced apart with a gap therebetween. The elongate resilient pillars extend from the clip body region that has the cable retention channels. Each elongate pillar includes a hook at an end that is opposite of the clip body region. Each hook can be oriented away from the other hook, such that both hooks point away from each other.