Abstract: A propulsion circuit for a vehicle includes an engine, a generator, a power rectifier, a direct current (DC) bus, a propulsion battery system, and at least one converter. The generator is coupled to the engine and configured to receive an input from the engine, and to provide an alternating current (AC) output. The power rectifier is configured to receive the AC output from the generator and provide a DC output responsive to receiving the AC output. The DC bus is coupled to the rectifier. The propulsion battery system is coupled to the DC bus. The at least one converter is configured to convert a direct current to an alternating current, and is coupled to the DC bus. Further, the propulsion circuit includes at least one charging component that is configured to selectably provide a charge to the battery system via at least one of the at least one converter.

Abstract: A propulsion circuit for a vehicle includes an engine, a generator, a power rectifier, a direct current (DC) bus, a propulsion battery system, and at least one converter. The generator is coupled to the engine and configured to receive an input from the engine, and to provide an alternating current (AC) output. The power rectifier is configured to receive the AC output from the generator and provide a DC output responsive to receiving the AC output. The DC bus is coupled to the rectifier. The propulsion battery system is coupled to the DC bus. The at least one converter is configured to convert a direct current to an alternating current, and is coupled to the DC bus. Further, the propulsion circuit includes at least one charging component that is configured to selectably provide a charge to the battery system via at least one of the at least one converter.

Abstract: Fuel cell stacks and systems with thermal management systems to deliver a liquid heat exchange fluid into thermal communication with the stack and thereafter recycle the stream. In some embodiments, the system is adapted to selectively apportion the recycled liquid stream between a stream that, prior to reuse as a heat exchange stream, is returned to a fluid reservoir and/or selectively cooled, and/or selectively returned to the reservoir and mixed with heat exchange fluid in the reservoir, and a stream that is returned into thermal communication with the stack without returning the stream to the reservoir and/or without heating or cooling and/or without being mixed with additional heat exchange fluid. In some embodiments, the system is adapted to automatically apportion the recycled stream responsive to its temperature. In some embodiments, the system includes a thermostatic valve and/or selectively apportions the recycled stream without requiring an electronic controller or manual input.

Abstract: Fuel cell stacks and systems with thermal management systems to deliver a liquid heat exchange fluid into thermal communication with the stack and thereafter recycle the stream. In some embodiments, the system is adapted to selectively apportion the recycled liquid stream between a stream that, prior to reuse as a heat exchange stream, is returned to a fluid reservoir and/or selectively cooled, and/or selectively returned to the reservoir and mixed with heat exchange fluid in the reservoir, and a stream that is returned into thermal communication with the stack without returning the stream to the reservoir and/or without heating or cooling and/or without being mixed with additional heat exchange fluid. In some embodiments, the system is adapted to automatically apportion the recycled stream responsive to its temperature. In some embodiments, the system includes a thermostatic valve and/or selectively apportions the recycled stream without requiring an electronic controller or manual input.

Abstract: Fuel cell stacks and systems with thermal management systems to deliver a liquid heat exchange fluid into thermal communication with the stack and thereafter recycle the stream. In some embodiments, the system is adapted to selectively apportion the recycled liquid stream between a stream that, prior to reuse as a heat exchange stream, is returned to a fluid reservoir and/or selectively cooled, and/or selectively returned to the reservoir and mixed with heat exchange fluid in the reservoir, and a stream that is returned into thermal communication with the stack without returning the stream to the reservoir and/or without heating or cooling and/or without being mixed with additional heat exchange fluid. In some embodiments, the system is adapted to automatically apportion the recycled stream responsive to its temperature. In some embodiments, the system includes a thermostatic valve and/or selectively apportions the recycled stream without requiring an electronic controller or manual input.