Abstract:
A motor controller for an electric motor is described. The motor controller is coupled to a power line communication connection and includes a communication device coupled to a memory device. The motor controller is configured to receive, using the communication device, a status query from a server computing device via the power line communication connection. The motor controller is additionally configured to transmit electric motor diagnostic data from the memory device to the server computing device via the power line communication connection. The motor controller is further configured to receive motor configuration data from a client computing device wirelessly coupled to the motor controller. The motor configuration data is for controlling the electric motor. The motor controller is also configured to operate the electric motor in accordance with the motor configuration data.
Abstract:
A motor includes a stator having a plurality of end coils. A control is coupled to a circuit board. The circuit board is coupled to the stator and is spaced apart from the end coils to define a first radial gap. A rotor is positioned adjacent the stator and is supported for rotation with respect to the stator. A fan is coupled to the rotor, and a housing surrounds and fully encloses the stator and the circuit board. The housing is spaced apart from the circuit board to define a first axial gap and a second radial gap. The fan directs a flow of cooling air through the first radial gap and the second radial gap to cool the circuit board.
Abstract:
A thermal protection device and methods for protecting a motor are described. The thermal protection device is electrically coupled between a power supply and a gate drive circuit for driving the motor. The thermal protection device is configured to disconnect the power supply from the gate drive circuit when a temperature measured by the thermal protection device exceeds a threshold temperature value.
Abstract:
A motor controller for a motor is described. The motor controller includes a communication device coupled to a memory device. The motor controller is configured to receive, using the communication device, a status query from a client computing device. The motor controller is additionally configured to transmit diagnostic data from the memory device to the client computing device, transmit identification data associated with the motor controller to the client computing device, receive, from the client computing device, a decommission password generated from the identification data, and disable the motor using the decommission password.
Abstract:
A motor controller for an electric motor is described. The motor controller is coupled to a power line communication connection and includes a communication device coupled to a memory device. The motor controller is configured to receive, using the communication device, a status query from a server computing device via the power line communication connection. The motor controller is additionally configured to transmit electric motor diagnostic data from the memory device to the server computing device via the power line communication connection. The motor controller is further configured to receive motor configuration data from a client computing device wirelessly coupled to the motor controller. The motor configuration data is for controlling the electric motor. The motor controller is also configured to operate the electric motor in accordance with the motor configuration data.
Abstract:
A fan drive circuit for a variable speed fan motor in a cooling system, includes an inverter configured to supply a current signal to stator windings of the variable speed fan motor, a frequency detection circuit coupled to an output stage of an inverter of a compressor motor of the cooling system and configured to detect a first frequency of a compressor current signal at the output stage of a variable speed compressor drive circuit and generate a frequency signal, and a digital signal processor (DSP) coupled to the inverter and the frequency detection circuit. The DSP is configured to receive the frequency signal corresponding to the first frequency from the frequency detection circuit, select a second frequency corresponding to the first frequency at which to operate the variable speed fan motor, and transmit control signals to the inverter to supply current to the stator windings at the second frequency.
Abstract:
A motor controller for a motor is described. The motor controller includes a communication device coupled to a memory device. The motor controller is configured to receive, using the communication device, a status query from a client computing device. The motor controller is additionally configured to transmit diagnostic data from the memory device to the client computing device, transmit identification data associated with the motor controller to the client computing device, receive, from the client computing device, a decommission password generated from the identification data, and disable the motor using the decommission password.