A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, includes a first battery that supplies power to the propulsion device, a second battery that supplies power to accessories of the vessel, a first open circuit voltage sensor that detects an open circuit voltage of the first battery, a second open circuit voltage sensor that detects an open circuit voltage of the second battery, and a switch that is turned on/off to open and close a current path between the first battery and the second battery.

The disclosure is directed to methods and systems for provisioning mobile electric vehicles with various operational settings data transmitted over the air. A vehicle or its components may operate according to operational settings corresponding to operational settings data included in the vehicle components. A server that is remote to the vehicle may comprise operational settings data and may transmit operational settings data to the vehicle. The server may transmit operational settings data automatically, such as on a periodic basis, in response to a request, such as from a user or from a vehicle component or anytime new or updated operational settings data are available for the vehicle or its components.

Disclosed is a power control system for a container vessel. The power control system has a power interface for supplying energy to at least one reefer container transportable by the container vessel. The power control system also has a controller configured to obtain load data representative of a load on a generator of the container vessel, and target load range data representative of a target load range for the generator. The power control system is configured to control the load such that the load falls within the target load range by the controller increasing energy supplied to the power interface for storage at the at least one reefer container, when the load is below the target load range.

Disclosed is a power controller for controlling power to be supplied to at least one reefer container on a container vessel. The power controller is configured to obtain a set temperature for at least one reefer container to be transported by the container vessel. The power controller is also configured to obtain data that indicates an amount of energy available to the container vessel and determine, based on the amount of energy available to the container vessel, whether to cool the at least one reefer container below the set temperature.

An electrical energy distribution system for a vessel or platform includes a plurality of DC buses, each DC bus coupled to a corresponding energy storage bus; each energy storage bus being coupled to a neighboring energy storage bus of the system through a first DC/DC converter. The plurality of energy storage buses are connected together to form a ring. Each energy storage bus is further coupled to an energy store through a second DC/DC converter.

A power system configured to accommodate poor incoming power quality from an outside power source. The power system includes an incoming connection configured to receive power from the outside power source. A powered device is operatively connected to the incoming connection, where the powered device draws a current from the incoming connection. A control system detects an incoming voltage at the incoming connection and compares the incoming voltage to a threshold voltage. When the incoming voltage is less than the threshold voltage the current drawn from the incoming connection by the powered device is caused to be reduced. The incoming voltage being less than the threshold voltage is indicative of a poor incoming power quality.

A method for operating a microgrid electric power generation system includes delivering energy to an electric power bus at least partially from one or more kinetic generators electrically coupled to the electric power bus, controlling the one or more kinetic generators in response to a change in a load such that a magnitude of a voltage on the electric power bus remains within a predetermined voltage range, and controlling one or more combustion generators electrically coupled to the electric power bus based at least in part on an operating state of the one or more kinetic generators. The one or more kinetic generators are capable of (a) delivering energy stored therein to the electric power bus, and (b) storing energy in kinetic form.

A method for planning consumption of power by devices onboard a marine vessel from a power source having a finite capacity. The method includes storing a usage model within a memory system, where the usage model includes an amount of the power consumed by each of the devices over a time period. The method further includes receiving a usage plan for operating the marine vessel while the power source is limited to the finite capacity. The method further includes analyzing with a control system the usage plan in view of the usage model and generating a projected performance of the power source, wherein the projected performance indicates the ability of the power source to supply the power needed by the devices while operating the marine vessel according to the usage plan.

A marine AC generator system includes a marine generator driven by an internal combustion engine and configured to generate an AC current and a rectifier configured to rectify the AC current to provide a DC current. At least one battery is configured to receive and be charged by the DC current. A battery powered inverter is configured to be powered by the at least one battery and to generate a variable current output frequency such that an AC electrical power is provided to a load when the marine generator is not running.

A marine propulsion system includes an engine effectuating rotation of an output shaft, a battery, an alternator having a rotor driven into rotation by the output shaft and that is configured to generate a charge output to the battery, a battery state of charge sensor configured to measure a battery charge value of the battery, and a control system. This control system is configured to receive a demand value and/or a temperature, receive the battery charge value from the battery state of charge sensor; and control the alternator to adjust the charge output based on at least one of the battery charge value and the demand value and/or temperature.