Abstract: A bus conditioner for an electrical power system having at least one bus couplable to an electric power generation device driven by a prime mover includes a first energy storage device, a bi-directional power converter including a first converter input electrically connected to the first energy storage device and a converter output for connection to the bus, and a controller operatively coupled to the bi-directional power converter. The controller is configured to maintain a substantially constant load on the power generation device by commanding the power converter to divert excess power into the first energy storage device or use energy from the first storage device to provide power to the bus.

Abstract: A fuel delivery system is provided for filling a fuel tank with a prescribed volume of fuel. The delivery system includes a fuel tank, a piezoelectrically-actuated fill control valve for controlling flow of fuel into the fuel tank, and a controller for controlling the closure rate of the fill control valve to accurately control the volume of fuel provided to the fuel tank. The controller receives an input corresponding to a measured volume of flow through the system and allows for closure of the fill valve at variable closure rates. The fill control valve is piezoelectrically-actuated and controlled by the controller such that each successive variable closure rate is relatively slower than the previous closure rate. In this way impact loads from shutting off the fill control valve are minimized to achieve a fill volume as close as possible to the prescribed volume.

Abstract: A fuel delivery system is provided for filling a fuel tank with a prescribed volume of fuel. The delivery system includes a fuel tank, a piezoelectrically-actuated fill control valve for controlling flow of fuel into the fuel tank, and a controller for controlling the closure rate of the fill control valve to accurately control the volume of fuel provided to the fuel tank. The controller receives an input corresponding to a measured volume of flow through the system and allows for closure of the fill valve at variable closure rates. The fill control valve is piezoelectrically-actuated and controlled by the controller such that each successive variable closure rate is relatively slower than the previous closure rate. In this way impact loads from shutting off the fill control valve are minimized to achieve a fill volume as close as possible to the prescribed volume.

Abstract: A bus conditioner for an electrical power system having at least one bus couplable to an electric power generation device driven by a prime mover includes a first energy storage device, a bi-directional power converter including a first converter input electrically connected to the first energy storage device and a converter output for connection to the bus, and a controller operatively coupled to the bi-directional power converter. The controller is configured to maintain a substantially constant load on the power generation device by commanding the power converter to divert excess power into the first energy storage device or use energy from the first storage device to provide power to the bus.

Abstract: A controller for a motor is provided. The motor includes N redundant M-phase rotor/stator combinations (where N and M are both integers greater than 1). The controller includes N driver circuits each having M outputs. Each of the M outputs of a respective one of the N driver circuits provides pulse-width modulated (PWM) current pulses to a corresponding phase winding in a respective one of the redundant M-phase rotor/stator combinations. Furthermore, the controller includes a control unit operatively coupled to the N driver circuits for providing phase spacing between the N driver circuits. As a result, current pulses provided by the N driver circuits to a same phase winding in each of the redundant M-phase rotor/stator combinations are offset in phase.

Abstract: A controller for a motor is provided. The motor includes N redundant M-phase rotor/stator combinations (where N and M are both integers greater than 1). The controller includes N driver circuits each having M outputs. Each of the M outputs of a respective one of the N driver circuits provides pulse-width modulated (PWM) current pulses to a corresponding phase winding in a respective one of the redundant M-phase rotor/stator combinations. Furthermore, the controller includes a control unit operatively coupled to the N driver circuits for providing phase spacing between the N driver circuits. As a result, current pulses provided by the N driver circuits to a same phase winding in each of the redundant M-phase rotor/stator combinations are offset in phase.