A positive common line and a negative common line are connected to a power source connector connected to a battery pack. First filters are provided on these two common lines, respectively. The positive common line is branched into a positive front line and a positive rear line. The negative common line is branched into a negative front line and a negative rear line. These two front lines are connected to a front power connector that is connected to a front power control unit. These two rear lines are connected to a rear power connector that is connected to a rear power control unit. It is possible to suppress electromagnetic noise on common lines.

This disclosure describes at least embodiments of an aircraft monitoring system for an electric or hybrid airplane. The aircraft monitoring system can be constructed to enable the electric or hybrid aircraft to pass certification requirements relating to a safety risk analysis. The aircraft monitoring system can have different subsystems for monitoring and alerting of failures of components, such as a power source for powering an electric motor, of the electric or hybrid aircraft. The failures that pose a greater safety risk may be monitored and indicated by one or more subsystems without use of programmable components.

An electrical power system is provided. The electrical power system involves a battery powered motor which in turn generates electricity using a primary generator and a secondary generator. The secondary generator provides a recycle electricity to the battery, while the primary generator provides an electrical output for powering electrical devices.

A system for capture, storage, and usage of electric energy generated by humans during exercise activities, including exercise devices having a modular control-power storage unit that incorporates energy conversion units arranged to transform mechanical energy of the at least one human participant into different storable forms of energy, at least one energy storage module arranged to store energy in at least one storage medium, and at least one control unit arranged to provide digital or analog control for the at least one modular control-power storage unit. The system may also have a communication and networking subsystem structured as a networking device and arranged to connect to and communicate bay exchanging information with at wired and/or wireless network.

A flywheel assembly for a renewable energy generation system includes a flywheel housing defining a cavity therein, a flywheel rotatably disposed within the cavity of the flywheel housing, where the flywheel is simultaneously formed from the same component as the flywheel housing, a magnetic levitation disk defining opposed upper and lower surfaces, the upper surface supporting the flywheel and the lower surface including a first plurality of magnets disposed thereon, and a base plate having a second plurality of magnets disposed on a surface thereof that is facing the first plurality of magnets, the second plurality of magnets having a polarity that is opposite of a polarity of the first plurality of magnets such that the magnetic force of the first and second plurality of magnets urges the magnetic levitation disk away from the base plate.

This present disclosure discloses an electrical power generating system, comprising a mechanical energy input, a direction transferring module, a first electromagnetic rotation module, a second electromagnetic rotation module and a power storage module. The direction transferring module is connected with the mechanical energy input. Moreover, the direction transferring module comprises a first output and a second output. The first output and the second output are deposed on two sides of the direction transferring module respectively. The first electromagnetic rotation module is connected with the first output, and the second electromagnetic rotation module is connected with the second output. On the other hand, the power storage module connects to the first electromagnetic rotation module and the second electromagnetic rotation module simultaneously.

A power supply system includes a plurality of UPSs configured to provide output power to one or more loads using AC power drawn from a supply bus and energy stored at respective energy modules of the plurality of UPSs. Each UPS of the plurality of UPSs comprises a corresponding frequency sensor configured to generate an indication of a frequency of the AC power at the supply bus. The plurality of UPSs comprises a first UPS configured to draw the AC power from the supply bus when the indication of the frequency output by the corresponding frequency sensor for the first UPS satisfies a first frequency priority threshold and a second UPS configured to draw the AC power from the supply bus when the indication of the frequency output by the corresponding frequency sensor for the second UPS satisfies a second frequency priority threshold.

A vehicle operates an internal combustion engine according to an automatic start-stop function to reduce fuel consumption. A first DC bus is adapted to connect to a plurality of DC loads. A primary battery is coupled between the first DC bus and a ground. A first alternator is driven by the internal combustion engine to supply electrical power to the first DC bus. A second DC bus is connected to a positive terminal of an auxiliary battery. A negative terminal of the auxiliary battery is connected to the first DC bus. A second alternator is driven by the internal combustion engine to supply electrical power to the second bus at a voltage corresponding to a sum of voltages of the primary and auxiliary batteries. An inverter receives electrical power from the second DC bus to generate an AC output adapted to connect to accessory AC loads.

The invention provides a power storage and supply method and system for a drilling rig. The system comprises a primary common direct current (DC) bus, at least one secondary DC bus, at least one bi-directional DC-to-DC converter connected between the primary common DC bus and the secondary DC bus, at least one motor group each connected to the secondary DC bus through a DC-to-AC inverter, and an Energy Storage System (ESS) configured to be charged by regenerative energy from at least one motor group and discharge power to at least one motor group through the primary common DC bus and the bi-directional DC-to-DC converter. The system may further comprise a bi-directional AC-to-DC converter between the primary DC bus and an AC bus, wherein the ESS is further configured to be charged by regenerative energy generated during lowering operation of a jacking system for the drilling rig, wherein the jacking system is connected to the AC bus.

This disclosure describes at least embodiments of an aircraft monitoring system for an electric or hybrid airplane. The aircraft monitoring system can be constructed to enable the electric or hybrid aircraft to pass certification requirements relating to a safety risk analysis. The aircraft monitoring system can have different subsystems for monitoring and alerting of failures of components, such as a power source for powering an electric motor, of the electric or hybrid aircraft. The failures that pose a greater safety risk may be monitored and indicated by one or more subsystems without use of programmable components.