Abstract: The invention relates to a parallelization method for black-start subsystems of a power grid with external support, which includes, after power blackout, partitioning the power grid into subsystems, and respectively performing black-start on the subsystems based on a power grid black-start research scheme, performing stability check on each subsystem, performing voltage calculation on parallel lines between the subsystems, checking the parallelizing simulation of the subsystems, and determining a feasible parallelizing path and a recommendable charging direction.

Abstract: A macerator assembly for an appliance circulation pump that improves pump and appliance performance. The macerator assembly includes an inner and outer cylinder concentrically disposed along a longitudinal axis. Each cylinder has a plurality of apertures defined by cutting edges. One or both of the inner and outer cylinders are rotated such that the cutting edges of the apertures fully filter and chop large incoming particles into smaller pieces.

Abstract: Appliances, such as dishwasher appliances, and pump assemblies for appliances are provided. A pump assembly includes a conduit, the conduit including a casing extending between an inlet and an outlet and defining an inner passage between the inlet and the outlet. The pump assembly further includes an impeller disposed within the inner passage, and a motor connected to the impeller and operable to rotate the impeller, the motor disposed within the inner passage. Fluid flowing within the inner passage is flowable past the motor.

Abstract: Spray arm assemblies for dishwasher appliances are provided. A spray arm assembly includes a first spray arm. The first spray arm includes an arm member, the arm member defining an interior and a plurality of apertures in fluid communication with the interior. The arm member further extends along and is rotatable about a longitudinal axis. The spray arm assembly further includes a central housing defining and rotatable about a central axis, the central axis generally perpendicular to the longitudinal axis. In some embodiments, the spray arm assembly further includes a bevel drive assembly disposed within the central housing. The bevel drive assembly is configured to rotate the arm member about the longitudinal axis when the central housing rotates about the central axis. The bevel drive assembly includes a drive member, an axle member, and an idler member, the axle member mounted to the arm member.

Abstract: A macerator assembly for an appliance circulation pump that improves pump and appliance performance. The macerator assembly includes an inner and outer cylinder concentrically disposed along a longitudinal axis. Each cylinder has a plurality of apertures defined by cutting edges. One or both of the inner and outer cylinders are rotated such that the cutting edges of the apertures fully filter and chop large incoming particles into smaller pieces.

Abstract: A pump assembly for an appliance, an appliance, and a dishwasher appliance are provided. The pump assembly has features for isolating the noise of a pump of the assembly, including a unitary pump housing comprising structural layer and an acoustic layer. The appliance includes a pump assembly and features for isolating noise from a pump of the assembly without requiring insulation for a substantial portion of the appliance. The dishwasher appliance includes a pump assembly and features for isolating the noise of a pump of the assembly such that a substantial portion of the dishwasher appliance need not be insulated to isolate the pump noise.

Abstract: The invention relates to a parallelization method for black-start subsystems of a power grid with external support, which includes, after power blackout, partitioning the power grid into subsystems, and respectively performing black-start on the subsystems based on a power grid black-start research scheme, performing stability check on each subsystem, performing voltage calculation on parallel lines between the subsystems, checking the parallelizing simulation of the subsystems, and determining a feasible parallelizing path and a recommendable charging direction.

Abstract: A dishwashing appliance may generally include a door and a tub defining a wash chamber configured to be closed via the door. The tub may include a top wall, a bottom wall and sidewalls extending between the top and bottom walls. In addition, the dishwashing appliance may include a heating device provided in operative association with the tub. The heating device may correspond to a resistive coating applied directly onto a surface of the bottom wall of the tub, wherein, when current is supplied through the resistive coating, the heating device is configured to generate heat.

Abstract: Spray arm assemblies for dishwasher appliances are provided. A spray arm assembly includes a first spray arm. The first spray arm includes an arm member, the arm member defining an interior and a plurality of apertures in fluid communication with the interior. The arm member further extends along and is rotatable about a longitudinal axis. The spray arm assembly further includes a central housing defining and rotatable about a central axis, the central axis generally perpendicular to the longitudinal axis. In some embodiments, the spray arm assembly further includes a bevel drive assembly disposed within the central housing. The bevel drive assembly is configured to rotate the arm member about the longitudinal axis when the central housing rotates about the central axis. The bevel drive assembly includes a drive member, an axle member, and an idler member, the axle member mounted to the arm member.

Abstract: Appliances, such as dishwasher appliances, and pump assemblies for appliances are provided. A pump assembly includes a conduit, the conduit including a casing extending between an inlet and an outlet and defining an inner passage between the inlet and the outlet. The pump assembly further includes an impeller disposed within the inner passage, and a motor connected to the impeller and operable to rotate the impeller, the motor disposed within the inner passage. Fluid flowing within the inner passage is flowable past the motor.

Abstract: Dishwasher appliances are provided. A pump device of a dishwasher appliance may include a first centrifugal pump in fluid communication with a drain and a second centrifugal pump in fluid communication with a fluid circulation assembly. The pump device further includes a motor, the motor including a driveshaft, the driveshaft rotatable in a first direction and a second opposite direction. The pump device further includes a first one-way bearing connecting the first centrifugal pump to the driveshaft, the first one-way bearing operable to rotate the impeller of the first centrifugal pump when the driveshaft is rotating in the first direction, and a second one-way bearing connecting the second centrifugal pump to the driveshaft, the second one-way bearing operable to rotate the impeller of the second centrifugal pump when the driveshaft is rotating in the second direction.

Abstract: Disclosed is a method for determining a position of a forced power oscillation disturbance source in a regional interconnected power grid. According to the method, when forced power oscillation occurs in a regional power grid, an algebraic sum of energy flow directional factors in the regions of the regional interconnected power grid is calculated so as to online determine the position of the disturbance source in real-time. Compared with the conventional disturbance source positioning method based on an energy function, the disturbance source positioning method based on calculation of the energy flow directional factors provided by the invention can reduce the impact of a periodic disturbance component and an initial constant on the determination of an aperiodic component of branch potential energy, thus achieving higher accuracy. Moreover, the integration links are reduced and the calculation process is simplified, thus better meeting the requirements for real-time power grid calculation.

Abstract: Disclosed is a method for determining a position of a forced power oscillation disturbance source in a regional interconnected power grid. According to the method, when forced power oscillation occurs in a regional power grid, an algebraic sum of energy flow directional factors in the regions of the regional interconnected power grid is calculated so as to online determine the position of the disturbance source in real-time. Compared with the conventional disturbance source positioning method based on an energy function, the disturbance source positioning method based on calculation of the energy flow directional factors provided by the invention can reduce the impact of a periodic disturbance component and an initial constant on the determination of an aperiodic component of branch potential energy, thus achieving higher accuracy. Moreover, the integration links are reduced and the calculation process is simplified, thus better meeting the requirements for real-time power grid calculation.

Abstract: A method and system for managing and executing business formulas using a single platform includes a storage function for storing a plurality of business formulas in a single repository, where each business formula is defined using multi-dimensional data. The multi-dimensional data is accessible by employee-users of the business through a server communicatively connected to the repository. The employee-user may alter the multi-dimensional data of a business formula to incorporate modifications, as well as to create new business formulas. The server functions to execute business formulas contained within the repository. By allowing employee-users to modify existing business formulas and to input new business formulas directly into the system without requiring a programmer to write new software code, the efficiency of executing business formulas and implementing modifications is increased.