Abstract: A torque current peak compensation value is subtracted from a torque current reference value, where the torque current peak compensation value is based at least in part on a determined peak of vibration. A torque current compensation value is subtracted from the results to produce an adjusted torque current reference value.

Abstract: A control system, method and article allows a monitoring module to monitor operation of a main controller in an electric drive, by providing questions and evaluating the accuracy and/or timeliness of responses from the main controller. Upon detection of an excessive number of incorrect or late responses, the monitoring module can shutdown operation, and may provide an alternative communications path, thereby preventing corrupt data from reaching a vehicle network, while providing communications for diagnostic and recovery such as by provision of new software or firmware instructions. The main controller may monitor the operation of the monitoring module, taking appropriate action if a fault is detected. Disabling a supply of power to a traction motor may be based on current operating conditions, such as speed.

Abstract: A controller implements a state machine for operating the bi-directional power converter with a flexible load pattern while maintaining a thermal condition of the power converter within acceptable limits. The state machine implements a wait loop in response to selected conditions to maintain the thermal condition.

Abstract: A control system, method and article allows a monitoring module to monitor operation of a main controller in an electric drive, by providing questions and evaluating the accuracy and/or timeliness of responses from the main controller. Upon detection of an excessive number of incorrect or late responses, the monitoring module can shutdown operation, and may provide an alternative communications path, thereby preventing corrupt data from reaching a vehicle network, while providing communications for diagnostic and recovery such as by provision of new software or firmware instructions. The main controller may monitor the operation of the monitoring module, taking appropriate action if a fault is detected. Disabling a supply of power to a traction motor may be based on current operating conditions, such as speed.

Abstract: A control subsystem for an electric motor determines whether power was interrupted, and delays torque production if power was interrupted. The control subsystem may employ two separate non-volatile memory locations, or alternatively a single non-volatile memory location.

Abstract: A control subsystem for an electric motor determines whether power was interrupted, and delays torque production if power was interrupted. The control subsystem may employ two separate non-volatile memory locations, or alternatively a single non-volatile memory location.

Abstract: A torque current peak compensation value is subtracted from a torque current reference value, where the torque current peak compensation value is based at least in part on a determined peak of vibration. A torque current compensation value is subtracted from the results to produce an adjusted torque current reference value.

Abstract: A controller implements a state machine for operating the bidirectional power converter with a flexible load pattern while maintaining a thermal condition of the power converter within acceptable limits. The state machine implements a wait loop in response to selected conditions to maintain the thermal condition.

Abstract: A computer program product for simulating the performance of an electrical power system. The computer program product consists of a computer-readable medium containing an electrical power system model module, an input module and a simulation engine. The electrical power system model module contains one or more electrical power system models consisting of interrelated blocks and connections. The blocks represent elements comprising electrical circuits, electromechanical devices, and measurement devices, and the relationships between said blocks and said connections in said model are read-only with respect to an end user. The input module is operable on a computer to allow an end user to specify at least one characteristic for at least one said block in said model. The simulation engine is operable on a computer to simulate the performance of an electrical power system represented by the model using the specified block characteristics.