A direct current (DC) power secondary distribution system is provided. The system comprises at least one first conversion unit and a one or more second conversion units. The first conversion unit receives alternating current (AC) electrical voltage from a distribution transformer of an AC power distribution system and converts the AC electrical voltage to DC electrical voltage output. The one or more second conversion units are connected downstream of the first conversion unit, and each second conversion unit converts the DC electrical voltage output from the first conversion unit to a respective AC electrical voltage output for a respective one or more loads. The one or more loads may be associated with a household.

A direct current (DC) power secondary distribution system is provided. The system comprises at least one first conversion unit and a one or more second conversion units. The first conversion unit receives alternating current (AC) electrical voltage from a distribution transformer of an AC power distribution system and converts the AC electrical voltage to DC electrical voltage output. The one or more second conversion units are connected downstream of the first conversion unit, and each second conversion unit converts the DC electrical voltage output from the first conversion unit to a respective AC electrical voltage output for a respective one or more loads. The one or more loads may be associated with a household.

A mobile omnidirectional device having a base support, four wheels pivotally connected to the base support, each wheel being driven by a drive motor, a controller for individually controlling each of the drive motors, and a power source for powering the controller and the drive motors. The device provides a zero inch turning radius and can be configured as a jib hoist or a rolling transportation cart.

A mobile omnidirectional device having a base support, four wheels pivotally connected to the base support, each wheel being driven by a drive motor, a controller for individually controlling each of the drive motors, and a power source for powering the controller and the drive motors. The device provides a zero inch turning radius and can be configured as a jib hoist or a rolling transportation cart.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and disassemble to be collected into a backpack for portability. The backpack is further furnished with a crank-handle generator to fulfill manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly consisted of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or domestically. In a situation of power out, manpower can be used to charge the battery set. Thus, the situation of power out to shut down the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and disassemble to be collected into a backpack for portability. The backpack is further furnished with a crank-handle generator to fulfill manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly consisted of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or domestically. In a situation of power out, manpower can be used to charge the battery set. Thus, the situation of power out to shut down the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

A multimodal converter for use in electric vehicle charging stations for interfacing between at least one AC source and two DC sources (including the electric vehicle with onboard DC traction accumulator). The multimodal converter may also be applicable to other uses with a multitude of energy sources. For example, where the multimodal converter AC interface is for an electric motor, such as in a plug-in electric vehicle, an electric power tool, an electric water pump, a wind turbine, or the like, or interfacing with any DC sources such as an electrical battery apparatus, a solar panel array, a DC generator, or the like, whether for private, commercial or other use.

A multimodal converter for use in electric vehicle charging stations for interfacing between at least one AC source and two DC sources (including the electric vehicle with onboard DC traction accumulator). The multimodal converter may also be applicable to other uses with a multitude of energy sources. For example, where the multimodal converter AC interface is for an electric motor, such as in a plug-in electric vehicle, an electric power tool, an electric water pump, a wind turbine, or the like, or interfacing with any DC sources such as an electrical battery apparatus, a solar panel array, a DC generator, or the like, whether for private, commercial or other use.

A vehicle enabling confirmation of an end of power transfer from a ground power supplying apparatus at the vehicle side, that is, a vehicle receiving power from a ground power supplying apparatus by noncontact, provided with a power reception apparatus for receiving power from the ground power supplying apparatus and a control device configured to judge an end of power transfer from the ground power supplying apparatus based on a change along with time of received power received by the power reception apparatus.

A vehicle enabling confirmation of an end of power transfer from a ground power supplying apparatus at the vehicle side, that is, a vehicle receiving power from a ground power supplying apparatus by noncontact, provided with a power reception apparatus for receiving power from the ground power supplying apparatus and a control device configured to judge an end of power transfer from the ground power supplying apparatus based on a change along with time of received power received by the power reception apparatus.