摘要:
A node of a wavelength division multiplexed passive optical network (WDM-PON) comprises wavelength division multiplexing optical line termination (OLT) apparatus. The OLT has an optical interface for interfacing with a plurality of remote optical network units in a passive optical network using a plurality of different wavelength channels (λ). The OLT has a plurality of electrical first ports corresponding to the optical wavelength channels (λ). A plurality of second ports interface with at least two operator networks. An electrical switching matrix interconnects the first ports and the second ports, allowing any operator to access any subscriber in a point-to-point manner. The apparatus at node can be formed as a plurality of modules.
摘要:
A system for producing electric power from hydrogen and hydrogen from electric power, comprising: a reversible electric power-hydrogen conversion stage comprising a fuel cell stack to produce electric power from stored hydrogen and an electrolytic cell stack to produce hydrogen from electric power; a hydrogen pressure modification stage to modify the pressure of hydrogen supplied to or produced from the reversible electric power-hydrogen conversion stage; an electric power management and conditioning stage to condition electric power from/to the reversible electric power-hydrogen conversion stage; and a management stage to differentially manage the operation of the reversible electric power-hydrogen conversion stage, the hydrogen pressure modification stage and the electric power management and conditioning stage according to whether the system produces electric power from hydrogen or hydrogen from electric power and on a user-settable operation management strategy.
摘要:
A method for producing electric power from hydrogen and hydrogen from electric power, comprising: a reversible electric power-hydrogen conversion stage comprising a fuel cell stack to produce electric power from stored hydrogen and an electrolytic cell stack to produce hydrogen from electric power; a hydrogen pressure modification stage to modify the pressure of hydrogen supplied to or produced from the reversible electric power-hydrogen conversion stage; an electric power management and conditioning stage to condition electric power from/to the reversible electric power-hydrogen conversion stage; and a management stage to differentially manage the operation of the reversible electric power-hydrogen conversion stage, the hydrogen pressure modification stage and the electric power management and conditioning stage according to whether the system produces electric power from hydrogen or hydrogen from electric power and on a user-settable operation management strategy.
摘要:
A switching matrix connects to an access network and a set of at least two operator networks. A controller performs a method of establishing new connections across the switching matrix in response to new connection requests. The new connection requests involve a sub-set of the set of operator networks. The controller determines if the new connections can be established across the switching matrix by rearranging only existing connections across the switching matrix to the sub-set of operator networks and, in response, establishes the at least one new connection. Otherwise, the controller rearranges existing connections across the switching matrix to at least one other of the set of operator networks to establish the new connections. The controller minimizes the number of other operator networks which are involved when rearranging existing connections. The switching matrix can be a Clos switching matrix.
摘要:
A switching matrix connects to an access network and a set of at least two operator networks. A controller performs a method of establishing new connections across the switching matrix in response to new connection requests. The new connection requests involve a sub-set of the set of operator networks. The controller determines if the new connections can be established across the switching matrix by rearranging only existing connections across the switching matrix to the sub-set of operator networks and, in response, establishes the at least one new connection. Otherwise, the controller rearranges existing connections across the switching matrix to at least one other of the set of operator networks to establish the new connections. The controller minimises the number of other operator networks which are involved when rearranging existing connections. The switching matrix can be a Clos switching matrix.
摘要:
A method for producing electric power from hydrogen and hydrogen from electric power, comprising: a reversible electric power-hydrogen conversion stage comprising a fuel cell stack to produce electric power from stored hydrogen and an electrolytic cell stack to produce hydrogen from electric power; a hydrogen pressure modification stage to modify the pressure of hydrogen supplied to or produced from the reversible electric power-hydrogen conversion stage; an electric power management and conditioning stage to condition electric power from/to the reversible electric power-hydrogen conversion stage; and a management stage to differentially manage the operation of the reversible electric power-hydrogen conversion stage, the hydrogen pressure modification stage and the electric power management and conditioning stage according to whether the system produces electric power from hydrogen or hydrogen from electric power and on a user-settable operation management strategy.
摘要:
The invention relates to an electric power generator comprising a plurality of fuel cells stacked in a stack and configured to supply an electric load, the generator comprising means for generating a gas fuel to be supplied to the stack, and means for removing at least part of a heat flow generated in the stack as a consequence of the consumption of said gas fuel; characterized in that it comprises heating means configured to maintain said means for generating gas fuel within a predetermined temperature range and comprising means for transferring at least part of said removed part of the heat flow generated in the stack from said removing means to said means for generating gas fuel.