摘要:
A proton exchange membrane (PEM) fuel cell end plate assembly provides an axial direction electric lead on an end plate of the assembly, and minimizes the contact resistance between an end fluid separator plate of a fuel cell stack and a current collector of the assembly. The current collector comprises an electrically conductive flat plate and a solid member connected together. The member goes through an opening on the end plate and provides an axial direction electric lead from the fuel cell stack. Means are provided to firmly contact the current collector and the fluid separator plate to maintain good contact across the entire area between the two components. The means of firmly contacting include moulding or bonding the separator plate and current collector together, or applying pressure to the separator plate and current collector such that firm contact is maintained between the two components.
摘要:
This invention relates to a valve assembly for metal hydride hydrogen storage (MHHS) or chemical hydride hydrogen storage (CHHS) devices. The valve assembly comprises a body with an inlet connector for connecting to the MHHS or CHHS device, an outlet connector for connecting to an external device, a cavity in the body that is in gas communication with the inlet and outlet connectors, and a shut-off valve in the cavity that can be moved between an opened position that permits gas flow between the inlet and outlet connectors, and a closed position that denies said gas flow. The outlet connector has a first valve therein that is biased to remain closed when external pressure thereon is less than or equal to ambient pressure, thereby impeding at least atmospheric gas backflow into the cavity. The outlet connector can also have a second, one-way valve that permits gas flow out of the valve assembly only, as well as a bypass mechanism including a gas passage coupled to the cavity and upstream of the first and second valves, through which gas can be transmitted to the canister during charging.
摘要:
An apparatus is provided for manufacturing one or more fuel cell membrane electrode assembly (MEA) components. The apparatus has a table for supporting one or more MEA components; a motorized arm assembly movable relative to the table; an ultrasonic sprayer assembly connected to the arm assembly and in fluid communication with at least one ink reservoir containing catalyst or electrolyte ink solution; and a controller communicative with the arm and sprayer assemblies and programmable to move the arm assembly along a programmed tool path and spray ink solution from the sprayer assembly onto a substrate supported by the table.
摘要:
A system connected to an AC power grid having an AC phase signal includes an inverter module including a first inverter coupled to a DC voltage, actuated based on the AC phase signal. The first inverter provides a first voltage signal having predetermined harmonic components. A second inverter includes second switch elements coupled to the DC voltage and actuated by a second set of control signals phase delayed with respect to the first control signals. A transformer module has first and second primary windings coupled to the first and second inverters. The transformer module further includes a secondary winding coupled to first primary winding, the second primary winding, and the AC power grid. The secondary winding is configured to provide a secondary output voltage to the AC power grid by combining the first voltage signal and the second voltage signal such that the predetermined harmonic components are substantially cancelled.
摘要:
The present invention is directed to a system configured to be connected to an AC power grid having at least one AC phase signal. The system includes at least one inverter module comprising a first inverter having a plurality of first switch elements coupled to a direct current (DC) voltage and actuated in accordance with a first set of control signals based on the at least one AC phase signal. The first inverter provides a first voltage signal having predetermined harmonic components. The at least one inverter module further comprises a second inverter including a plurality of second switch elements coupled to the DC voltage and actuated in accordance with a second set of control signals phase delayed with respect to the first set of control signals. The second switching inverter providing a second voltage signal having the predetermined harmonic components. At least one transformer module includes at least one first primary winding coupled to the first inverter and at least one second primary winding coupled to the second inverter. The transformer module further includes at least one secondary winding coupled to the at least one first primary winding, the at least one second primary winding and the AC power grid for each at least one AC phase signal. The secondary winding is configured to provide a secondary output voltage to the AC power grid by combining the first voltage signal and the second voltage signal such that the predetermined harmonic components are substantially cancelled.
摘要:
A wireless operating room communication system provides wireless transmission of video signals from a wireless camera or a wireless transmitter unit to a portable wireless display unit. A wireless multiple device control unit is in wireless communication with the transmitter unit, the display unit, and a plurality of surgical devices disposed within the operating room. Each of the surgical devices has a video receiver to obtain a video signal to synchronize the devices and units. The video transmitter unit has a video transmitter and the other units or devices have a non-video transmitter. The arrangement enables transmission of device control signals on the same channel as the video signal. In response to changes in bandwidth, the video transmitter unit reduces the video signal to enable transmission thereof to the video display unit, while maintaining robustness of the control signals.
摘要:
In one embodiment, the invention provides a method comprising determining metadata encoded in instructions of a stored program; and executing the stored program based on the metadata.
摘要:
Embodiments of the invention provide a method of creating, based on an operating-system-scheduled thread running on an operating-system-visible sequencer and using an instruction set extension, a persistent user-level thread to run on an operating-system-sequestered sequencer independently of context switch activities on the operating-system-scheduled thread. The operating-system-scheduled thread and the persistent user-level thread may share a common virtual address space. Embodiments of the invention may also provide a method of causing a service thread running on an additional operating-system-visible sequencer to provide operating system services to the persistent user-level thread. Embodiments of the invention may further provide apparatus, system, and machine-readable medium thereof.
摘要:
A processor may include an address monitor table and an atomic update table to support speculative threading. The processor may also include one or more registers to maintain state associated with execution of speculative threads. The processor may support one or more of the following primitives: an instruction to write to a register of the state, an instruction to trigger the committing of buffered memory updates, an instruction to read the a status register of the state, and/or an instruction to clear one of the state bits associated with trap/exception/interrupt handling. Other embodiments are also described and claimed.
摘要:
In one embodiment, the invention provides a method comprising determining metadata encoded in instructions of a stored program; and executing the stored program based on the metadata.