A power system may include a power generation component and a sensor configured to measure a parameter. The power system may also include a controller in communication with the power generation component and the sensor. The controller may be configured to run the power generation component in an exercise mode for a duration. The duration may be based on the measured parameter.

An electric power generation system and a method in an electric power generation system. The system comprising one or more generators for producing electrical energy, each generator being arranged to be driven with a corresponding prime mover, wherein the generators are multiphase AC generators adapted to generate a multiphase voltage having a frequency and an amplitude, the phase outputs of the generators are connectable to a common multiphase bus for distributing the electrical energy generated by the AC generators, the system comprises further means for providing independent reference values for a rotational speed of the prime movers and for amplitude of the multiphase voltage, the rotational speed of the prime movers defining the frequency of the multiphase voltage, and the system is adapted to operate in at least three operation points on the basis of the provided independent reference values, an operation point being defined by a ratio of the amplitude of the multiphase voltage to the frequency of the multiphase voltage, wherein the at least three operation points are different.

A vehicle includes an internal combustion engine, an electric machine, and a controller. The electric machine is rotatably coupled to the engine and is configured to deliver electrical power to electrical accessories. The controller is programmed to, in response to a control signal loss between the electric machine and the controller, limit torque output of electric machine to less than a torque threshold that corresponds to the power threshold. The controller is further programmed to, in response an accessory power demand being greater than the power threshold, control the engine to power the electric machine to increase the torque output of electric machine to greater than the torque threshold to meet the accessory power demand.

Method and systems are provided for, in response to a state of charge (SOC) of a vehicle battery increasing above a threshold SOC, reducing an alternator charging based on one or more of a spark timing, an engine speed, an air-fuel ratio, and an engine load. In this way, fuel consumption may be reduced while maintaining a battery SOC for operation of front-end accessories may be achieved, and fuel consumption may be reduced during aggressive vehicle driving conditions such has high engine loads near transmission downshift thresholds and high engine speeds.

The invention is a method for controlling and/or monitoring a wind turbine 1 equipped with a LIDAR sensor 2. Control and/or monitoring provides an estimation of the wind speed at the rotor obtained an estimator and a LIDAR sensor 2. The estimator of the wind speed at the rotor is constructed from a representation of the wind, a model of the LIDAR sensor and a model of wind propagation.

A turbomachine and method for operating a turbomachine comprising a first rotatable component and a second rotatable component each defining a rotatable speed mechanically independent of one another, and an electric machine electrically coupled to the first rotatable component and the second rotatable component such that a load level relative to the first rotatable component and the second rotatable component is adjustable is generally provided. The method includes adjusting a first load at a first rotor assembly of the electric machine electrically coupled to the first rotatable component such that a first speed of the first rotatable component is increased or decreased based on an engine condition and the first load; adjusting a second load at a second rotor assembly of the electric machine electrically coupled to the second rotatable component such that a second speed of the second rotatable component is decreased or increased based on the engine condition and the second load; and transferring electrical energy generated from at least one of the first rotatable component or the second rotatable component.

A load adaptive linear electrical generator system is provided for generating DC electrical power. The electrical generation system includes one or more power generation modules which will be selectively turned on or off and additively contribute power depending on the DC power demand. Each power generating module includes a pair of linear electrical generators connected to respective ones of a pair of internal combustion piston based power assemblies. The piston in the internal combustion assembly is connected to a magnet in the linear electrical generator. The piston/magnet assembly oscillates in a simple harmonic motion at a frequency dependent on a power load of the electrical generator. A stroke limiter constrains the piston/magnet assembly motion to preset limits.

An apparatus including a pneumatic system; an energy harvesting unit configured to generate electrical energy from a compressed gas in the pneumatic system; a battery connected to the energy harvesting unit; a sensor disposed to detect a first parameter regarding operation of the energy harvesting unit; and a controller connected to the sensor and the energy harvesting unit. The sensor and the controller are powered by the energy harvesting unit. The controller is configured to control the energy harvesting unit and to process measurements for the first parameter detected by the sensor. The controller is further programmed with a learning system configured to diagnose an operational condition of the energy harvesting unit based on the measurements for the first parameter, and to issue a command to the controller based on the operational condition.

An electricity generating device comprising a housing; a first lobed rotor and a second lobed rotor rotatably arranged in a fluid passage enclosed by the housing such that the lobes of the first and the second lobed rotor intermesh to create a barrier between a high-pressure and a low-pressure side of the housing during operation of the device; a first electricity generator to which the first lobed rotor is coupled, the first electricity generator being capable of varying the load of the first lobed rotor; and a second electricity generator to which the second lobed rotor is coupled, the second electricity generator being capable of varying the load of the second lobed rotor. There is also provided a method of synchronizing rotational positions of a first lobed rotor coupled to a first electricity generator and a second lobed rotor connected to a second electricity generator in a turbine.

The present subject matter is directed to a method for controlling a generator of an electrical power system. The generator includes a generator stator magnetically coupled to a generator rotor. The method includes operating the generator stator of the generator at a first voltage level. Another step includes monitoring, via one or more sensors, at least one of a rotor speed or a rotor voltage of the generator rotor. The method also includes reducing the first voltage level of the generator stator by a predetermined percentage when the rotor speed is within a low speed range or the rotor voltage exceeds a predetermined threshold so as to increase an operating range of the rotor speed. Thus, the increased operating range of the rotor speed increases power production of the electrical power system in the low speed range.