Abstract: Various enhancements to grid-interactive inverters in accordance with embodiments of the invention are disclosed. One embodiment includes input terminals configured to receive a direct current, output terminals configured to provide an alternating output current to the utility grid, a controller, an output current sensor, and a DC-AC inverter stage comprising a plurality of switches controlled by control signals generated by the controller. In addition, the controller is configured to: generate control signals that cause the switches in the DC-AC inverter stage to switch a direct current in a bidirectional manner; measure the alternating output current; perform frequency decomposition of the output current; and generate control signals that cause the switches in the DC-AC inverter stage to switch current in a way that the magnitude of a plurality of unwanted current components is subtracted from the resulting output current.

Abstract: A blower includes a motor mounted to a frame. The frame includes wheels mounted to the frame. The blower includes a fan powered by the motor and a blower outlet. The fan is configured to expel air from the fan through the blower outlet. The blower outlet is movable in a horizontal direction and a vertical direction. The blower includes a horizontal control for controlling a horizontal position of the blower outlet. The blower includes a vertical control for controlling a vertical position of the blower outlet. Both the horizontal and vertical controls are positioned remote from the blower outlet.

Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

Abstract: A battery module assembly includes a first battery cell and a second battery cell. The first battery cell includes a rear surface, a side surface, and a top surface. A second battery cell also includes a front surface, a side surface, and a top surface. The front surface of the second battery cell contacts the rear surface first battery cell. A barrier contacts the side surfaces of both the first battery cell and the second battery cell.

Abstract: A video doorbell system operable to generate a chime sound, comprises a transformer, operable to convert a premise's power supply to a suitable. The video doorbell system further includes a video doorbell having a processor, a video camera and a wireless communication module. The video doorbell is electrically connected to the transformer by a two-wire interface. The processor within the video doorbell operable to generate a chime signal using power supplied from the two-wire interface when a doorbell button is depressed. The video doorbell system further includes a chime controller, electrically connected to the transformer and the video doorbell by the two-wire interface. The video doorbell system continues to provide sufficient power to the video doorbell from the transformer via the two-wire interface so as to be able to operate the processor, video camera and wireless communication module while the doorbell button is currently depressed.

Abstract: A load shed module configured to be connected in series between a power supply and a load is disclosed. A separate load shed module is connected in series between each load and the power supply. The load shed module determines the frequency of the voltage supplied from the power supply. Based on the frequency, the load shed module determines if utility power is connected or if a generator is connected. If the generator is connected and the frequency of the voltage goes outside of a desired operating range for a preset time, the load shed module disconnects the load from the power supply. Each load shed module includes a priority setting and reconnects its corresponding load after a predetermined time corresponding to the priority setting.

Abstract: An example control device includes memory storing a first thermal model of a building and a second thermal model of the building, and a processor connected to the memory. The processor is configured to select the first thermal model or the second thermal model as a selected thermal model, and execute model predictive control (MPC) using the selected thermal model to control a heating, cooling, ventilation, and/or air conditioning (HVAC) apparatus at the building.

Abstract: A diesel emissions control system comprising a first DEF tank and a second DEF tank. A pump for pumping fluid from one or more of the first DEF tank and the second DEF tank. A connection line fluidly connecting the first DEF tank and the second DEF tank. A heating system preventing freezing of the DEF in the diesel emissions control system.

Abstract: A battery module includes features to optimize cooling while providing electrical isolation and cell gas-venting channels. The battery module can include the integration of a heatsink in order to improve thermal performance. Thermally conductive pads can be provided to create an electrically isolated interface between a plurality of series-connected battery-cell lead plates, at different potentials, and the heatsink. Optimization, by stacking thin and thick thermally conductive pads, allows for creation of gas-venting channels along the positive cell terminal locations. In some arrangements, a plurality of fluid paths are disposed between the inlet and the outlet of the battery module to provide heat convective airflow through the battery module.

Abstract: Various enhancements to grid-interactive inverters in accordance with embodiments of the invention are disclosed. One embodiment includes input terminals configured to receive a direct current, output terminals configured to provide an alternating output current to the utility grid, a controller, an output current sensor, and a DC-AC inverter stage comprising a plurality of switches controlled by control signals generated by the controller. In addition, the controller is configured to: generate control signals that cause the switches in the DC-AC inverter stage to switch a direct current in a bidirectional manner; measure the alternating output current; perform frequency decomposition of the output current; and generate control signals that cause the switches in the DC-AC inverter stage to switch current in a way that the magnitude of a plurality of unwanted current components is subtracted from the resulting output current.

Abstract: This disclosure is directed to generator systems and methods for monitoring a direct current bus and automatically operating in response to a power level of the direct current bus dropping below a desired power level or to a threshold before dropping below the power level. The automatic operation of the generator system may raise or keep the actual power level of the system above the desired power level or threshold.

Abstract: A novel system and method for determining a viewing frustum for a wide angle camera system employs multiple detection sub-systems to detect the presence or occurrence of events and/or objects of interest within the entire captured field of view of the system and processes the results of those detection sub-systems in accordance with a Hierarchy of Interest to select a viewing frustum for providing a de-warped view of interest to a viewer. The Hierarchy of Interest can be predefined, or selected from a set of Hierarchies of Interest and/or can be adaptive is response to feedback from a viewer.

Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

Abstract: Systems and methods are provided for managing Electric Vehicle Supply Equipment (EVSE) for use with a generator back-up. The EVSE can receive electrical power to generate an electrical load while monitoring a frequency of electrical power. The EVSE and/or another system may determine the generator back-up is supplying power based on the frequency. In response to determining the generator back-up is supplying power, the EVSE can operate at percentage of full power. The EVSE may attempt to reconnect and/or increase the percentage of full power in multiple ways based on a mode the EVSE is operating in. In a lock-out disabled priority mode, the EVSE can attempt to reconnect and begin operating at full power. In a lock-out mode, the EVSE can attempt to reconnect at a percentage of full power and incrementally increase the percentage of full power until full power has been reached.

Abstract: A telescoping mast assembly with stop device. The telescoping mast assembly includes multiple pillars, one or more of which is able to be moved between an extended position and a retracted position. The stop device is mountable to the telescoping mast assembly and functions to prevent the rapid movement of the telescoping mast assembly from the extended position to the retracted position. The stop device includes a pin coupled to a pulley and is movable between an engaged position, in which the stop device restricts the movement a pillar, and a disengaged position in which the stop device does not restrict the movement of the pillar.

Abstract: A load shed module configured to be connected in series between a power supply and a load is disclosed. A separate load shed module is connected in series between each load and the power supply. The load shed module determines the frequency of the voltage supplied from the power supply. Based on the frequency, the load shed module determines if utility power is connected or if a generator is connected. If the generator is connected and the frequency of the voltage goes outside of a desired operating range for a preset time, the load shed module disconnects the load from the power supply. Each load shed module includes a priority setting and reconnects its corresponding load after a predetermined time corresponding to the priority setting.

Abstract: A method of pumping DEF (diesel exhaust fluid) in a diesel emissions control system. The method includes pumping DEF from an auxiliary DEF tank to an onboard DEF tank. The DEF is pumped from the auxiliary DEF tank to the onboard DEF tank. The fluid pathway is purged with air after pumping the DEF from the auxiliary DEF tank to the onboard DEF tank. The air is pumped (1) through the fluid pathway from the auxiliary DEF tank, or (2) into the auxiliary DEF tank.

Abstract: An internal combustion engine-based system includes an internal combustion engine. The internal combustion engine-based system includes an engine interrupt connected to the engine. The engine interrupt is configured to selectively stop the operation of the engine. The internal combustion engine-based system includes a controller in communication with the engine interrupt. The internal combustion engine-based system includes a carbon monoxide detector in communication with the controller. The controller uses the engine interrupt to stop the operation of the engine when the carbon monoxide detector provides the controller with signals that are representative of a carbon monoxide level proximate the internal combustion engine that together form a trend of building carbon monoxide amounts over a set time interval.

Abstract: A modular load management system comprises one or more compact modules designed to fit in the wiring troughs of a standard AC distribution panel of a building. The modules include one or more input terminals to receive electrical power from one or more circuit breakers in the panel and deliver power to load circuits of the building via one or more output terminals. The modules contain at least one disconnect switch for disconnecting circuits from breakers in response to a remote or locally-generated control signal. The modules may also include current sensors on some or all terminals, such that power and energy flow may be monitored on a per-circuit basis.

Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.