Abstract: Various systems are provided for a power supply system. In one example, the system includes a power distribution unit configured to receive power from a main power source and an uninterruptible power supply (UPS), wherein the UPS is configured to directly power an output AC load, the UPS is further configured to power an output DC load after coupled through one or more transformers.

Abstract: A mouthrinse composition comprising an ethanolic extract of Proboscidea jussieui leaves with a concentration between 0.7% (w/v) and 1.3% (w/v), a fluoride component with a concentration between 0.02% (w/v) and 0.08% (w/v), and propylene glycol with a concentration between 0.7% (w/v) and 1.3% (w/v).

Abstract: Various systems are provided for a power supply system. In one example, the system includes a power distribution unit configured to receive power from a main power source and an uninterruptible power supply (UPS), wherein the UPS is configured to directly power an output AC load, the UPS is further configured to power an output DC load after coupled through one or more transformers.

Abstract: Various methods and systems are provided for a power supply system. In one example, a method and system includes a power distribution unit (PDU) configured to receive power from a main power source and an uninterruptible power supply (UPS). The UPS includes a timer and the UPS is configured to directly power an output alternating current (AC) load after the main power source in unavailable. The UPS is also configured to power an output high voltage direct current (HVDC) load after the main power source is unavailable for a time delay measured by the timer.

Abstract: Methods and systems are provided for powering an imaging system. In one embodiment, a system comprises a direct current (DC) bus, an x-ray source coupled to the DC bus, a power distribution unit (PDU) with an input coupled to a three-phase alternating current (AC) source and an output coupled to the DC bus, and an energy storage apparatus comprising a supercapacitor, the energy storage apparatus coupled to the DC bus and configured to store electrical energy output by the PDU in the supercapacitor, and output the stored electrical energy directly to the DC bus for powering the x-ray source. In this way, an x-ray source of an imaging system may be adequately powered beyond the limitations of a PDU without upgrading the electrical utilities of a hospital and without upgrading the PDU. The supercapacitor is protected by FPGA by measuring input current, voltage, temperature, and voltage balance.

Abstract: Methods and systems are provided for powering an imaging system. In one embodiment, a system comprises a direct current (DC) bus, an x-ray source coupled to the DC bus, a power distribution unit (PDU) with an input coupled to a three-phase alternating current (AC) source and an output coupled to the DC bus, and an energy storage apparatus comprising a supercapacitor, the energy storage apparatus coupled to the DC bus and configured to store electrical energy output by the PDU in the supercapacitor, and output the stored electrical energy directly to the DC bus for powering the x-ray source. In this way, an x-ray source of an imaging system may be adequately powered beyond the limitations of a PDU without upgrading the electrical utilities of a hospital and without upgrading the PDU. The supercapacitor is protected by FPGA by measuring input current, voltage, temperature, and voltage balance.

Abstract: A hydraulic circuit is pressurized by a hydraulic pump driven by a power source in a machine. The hydraulic circuit is configured to use pressurized fluid from an accumulator to drive a hydraulic accessory when the hydraulic pump is inactive and the power source is shut down for fuel savings during idle operations. A valve may be configured to selectively supply pressurized hydraulic fluid to the accessory when the pump is inactive.

Abstract: A system for detecting faults in a rectifier includes an AC current generator and a rectifier. A controller is configured to determine an AC input current supplied to rectifier, generate a simulated rectified DC input current based upon the AC input current, and determine a DC output current from the rectifier. The controller is further configured to compare the simulated rectified DC input current to the DC output current and generate an alert command if a difference between the simulated rectified DC input current and the DC output current exceeds a predetermined difference threshold.

Abstract: A system for detecting faults in a rectifier includes an AC current generator and a rectifier. A controller is configured to determine an AC input current supplied to rectifier, generate a simulated rectified DC input current based upon the AC input current, and determine a DC output current from the rectifier. The controller is further configured to compare the simulated rectified DC input current to the DC output current and generate an alert command if a difference between the simulated rectified DC input current and the DC output current exceeds a predetermined difference threshold.

Abstract: An air conditioning system for a machine is disclosed herein. The machine has an engine, a radiator operably connected to the engine, and a radiator fan to generate a flow of air over the radiator. The air conditioning system includes a condenser, at least one condenser fan, a sensor, and a control unit. The condenser condenses a refrigerant and is structured and arranged to directly receive at least a portion of the flow of air generated by the radiator fan. The at least one condenser fan selectively generates a flow of air over the condenser. The sensor measures at least one of: an engine speed, a temperature of the condenser, and an airflow through the condenser. The control unit selectively controls the at least one condenser fan based on the at least one of: the engine speed, the temperature of the condenser, and the airflow through the condenser.

Abstract: The present disclosure is related to a machine which includes a chassis, a dump body supported to the chassis, and an electric drive system. The electric drive system includes an engine, a generator connected to the engine, a rectifier electrically connected to the generator, an inverter electrically connected to the rectifier, an electric motor electrically connected to the inverter, and a retarder arrangement configured to receive current from the inverter while a brake is applied. Further, the retarder arrangement includes a resistor grid configured to dissipate heat when the current is received from the inverter while the brake is applied. Moreover, the resistor grid is disposed inside an oil bath provided underneath the dump body.

Abstract: Mining vehicles and power systems for use with such vehicles are provided. One power system includes a synchronous generator circuit configured to generate an alternating current (AC) power signal distributed across at least six phases. The power system further includes a rectifier circuit including at least twelve diode devices and configured to receive the AC power signal distributed across the at least six phases from the synchronous generator circuit and generate a direct current (DC) power output signal. The DC power output signal includes at least twelve pulses for a single wave of the AC power signal received from the synchronous generator circuit. The rectifier circuit is configured to output the DC power output signal for use in powering a load device of the mining vehicle.

Abstract: A braking system can include a monitor circuit and/or a contactor control circuit. The braking system utilizes a number of contactors coupled between a power bus. The contactors selectively provide power to resistive elements. The monitor circuit is configured to determine the number of closed contactors of the contactors using current transformers. The contactor control circuit is configured to open and close the contactors. The control circuit includes a solid state timer circuit for each coil associated with the contactors. The solid state timer circuit bypasses a resistive element in series with the coil for a period of time.

Abstract: System and methods for protecting motors of a vehicle are provided. A system includes a current transformer device for each phase of the three-phase power received by each protected motor. Each current transformer device includes a switch that is normally in a first position and is configured to monitor an output current of fuse through which the power is transmitted, compare the output current to a threshold current level, and, when the output current is below the threshold current level, change the switch to a second position. The system also includes a processing circuit configured to control operation of the one or more motors of the vehicle. The processing circuit is configured to determine whether one or more of the switches of the plurality of current transformer devices is in the second position and, if so, activate a fault condition.

Abstract: System and methods for protecting motors of a vehicle are provided. A system includes a current transformer device for each phase of the three-phase power received by each protected motor. Each current transformer device includes a switch that is normally in a first position and is configured to monitor an output current of fuse through which the power is transmitted, compare the output current to a threshold current level, and, when the output current is below the threshold current level, change the switch to a second position. The system also includes a processing circuit configured to control operation of the one or more motors of the vehicle. The processing circuit is configured to determine whether one or more of the switches of the plurality of current transformer devices is in the second position and, if so, activate a fault condition.

Abstract: System and methods for driving a blower motor of a vehicle such as a mining truck or locomotive are provided. A drive system includes a blower drive circuit configured to receive power from an alternator and use the power from the alternator to drive the blower motor. The blower drive circuit is further configured to receive power from at least one traction motor of the vehicle during a retarding operation of the vehicle and use the power from the at least one traction motor to drive the blower motor. The drive system further includes a bypass circuit configured to electrically isolate the blower motor from the blower drive circuit when a fault is detected in the blower drive circuit and to provide power from the alternator to the blower motor such that the blower motor remains operable without use of the blower drive circuit.

Abstract: A braking system can include a monitor circuit and/or a contactor control circuit. The braking system utilizes a number of contactors coupled between a power bus. The contactors selectively provide power to resistive elements. The monitor circuit is configured to determine the number of closed contactors of the contactors using current transformers. The contactor control circuit is configured to open and close the contactors. The control circuit includes a solid state timer circuit for each coil associated with the contactors. The solid state timer circuit bypasses a resistive element in series with the coil for a period of time.

Abstract: System and methods for driving a blower motor of a vehicle such as a mining truck or locomotive are provided. A drive system includes a blower drive circuit configured to receive power from an alternator and use the power from the alternator to drive the blower motor. The blower drive circuit is further configured to receive power from at least one fraction motor of the vehicle during a retarding operation of the vehicle and use the power from the at least one traction motor to drive the blower motor. The drive system further includes a bypass circuit configured to electrically isolate the blower motor from the blower drive circuit when a fault is detected in the blower drive circuit and to provide power from the alternator to the blower motor such that the blower motor remains operable without use of the blower drive circuit.