Emerson Electric Company

Ping Shan

Weihua Guo

Cai Bing Zhang

Exemplary embodiments or implementations are disclosed of methods, apparatus, and systems for operating motors in variable speed situations. In an exemplary implementation, a method of controlling a variable-speed motor includes defining a control duration as a predetermined number of cycles of a multiple-phase power supply. Each speed in a range of speeds is defined by a corresponding number of the cycles of the control duration. Power is provided to the motor from the power supply at a selected one of the speeds, by enabling input from the power supply for the number of the cycles of the control duration corresponding to the selected speed.

Speed control of variable-speed multiple-phase motors

Disclosed are exemplary embodiments of systems and methods for connecting split HVAC systems (and/or for providing such connectivity) to networks and/or smart meters, thereby allowing a split HVAC system to be controllable via the Internet and/or a smart meter. An exemplary embodiment includes a system for use with a split HVAC system having at least one outdoor unit and at least one indoor unit having a receiver. In this exemplary embodiment, the system comprises a control having connectivity to a network and/or a smart utility meter. An equipment interface module is configured for wireless communication with the receiver of the at least one indoor unit and the control. The equipment interface module is operable for communicating instructions from the control to the receiver of the at least one indoor unit, thereby allowing operation of the at least one indoor unit to be controllable via the network and/or smart utility meter.

Connecting split HVAC systems to the internet and/or smart utility meters

Exemplary embodiments or implementations are disclosed of systems for providing heat for use inside a structure and control apparatus and methods relating to material drying systems. In an exemplary embodiment, a control apparatus for controlling heat and/or humidity inside a structure selects one or more heat sources from a plurality of heterogeneous heat sources. The heat sources include a heat storage reservoir and a heat pump system between which heat is selectively transferrable via a fluid of the heat storage reservoir and a refrigerant of the heat pump system. The selecting is performed based on sensor input(s). The control apparatus controls the selected heat source(s) to provide heat inside the structure.

Providing heat for use inside a structure

Exemplary embodiments or implementations are disclosed of systems for drying materials and control apparatus and methods relating to material drying systems. In an exemplary embodiment, a control apparatus for a material drying system is configured to select one or more heat sources from a plurality of heterogeneous heat sources for drying the material. The selecting is performed based on one or more sensor inputs. The control apparatus controls the selected heat source(s) to provide heat to dry the material. In some configurations, a material drying system operates as a typical heat pump only when more cost-effective auxiliary heat cannot be provided to maintain a drying temperature.

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Suzhou, China

Ping Shan