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A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in

A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage.

대표청구항 ▼

A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in

A method and system to automatically restart a permanent magnet turbogenerator/motor when a fatal fault is detected. The automatic restart logic includes time constraints and limitations on the number of iterations, and is useful regardless of whether the permanent magnet turbogenerator/motor is in a grid connect mode or a standalone mode, and regardless of how the fault originates or is detected. Additional control logic is utilized to handle grid transients and over load conditions to prevent a fatal fault from occurring by using time constraints and an iterative process, together with a brake resistor to control DC bus voltage. ine speed by a predetermined reference value; and means for injecting a non-combustible gas into the cylinders in response to the means for determining. 3. An apparatus for controlling operation of a railroad locomotive, wherein the locomotive comprises a throttle for setting an engine speed demand, the engine having a plurality of cylinders wherein combustion occurs due to injection of fuel into each cylinder under control of a fuel controller in response to the difference between the actual engine speed and the demanded engine speed, wherein the engine is drivingly coupled to a traction alternator for supplying electrical energy to traction motors to move the locomotive, and wherein the locomotive includes passive loads to which the electrical energy generated by the traction alternator can be selectably coupled, said apparatus comprising: a comparator responsive to the actual engine speed and the engine speed demand for determining when the actual engine speed is greater than the demanded engine speed by a predetermined reference value; and an injector for injecting a non-combustible gas into the cylinders in response to said comparator.