CONTROL SYSTEM FOR A RENEWABLE ENERGY SYSTEM
First Claim
1. An energy stand-alone supply providing electrical power to a load having an electrical power need using an energy supply source providing a source electrical power, wherein a time-variable discrepancy between said source electrical power provided by said energy supply source and said electrical power need, the energy stand-alone supply maintaining the provided electrical power between two values, the energy stand-alone supply comprising:
- a buffer receiving a source electrical power from an energy supply, the buffer further providing electrical power to a load according to an electrical power need of said load;
a first power converter connected to said buffer and providing a converted electrical power using at least one part of the source electrical power in response to a first control signal;
a hydrogen generator receiving said converted electrical power and generating hydrogen using said provided converted electrical power;
a hydrogen storage storing the generated hydrogen provided by said hydrogen generator;
a hydrogen conversion device receiving at least one part of said hydrogen of said hydrogen storage and providing a generated electrical power in response to a second control signal;
a second converter receiving said generated electrical power and providing a converted electrical power of the generated electrical power to said buffer;
a control unit providing said first and second signal, the control unit enabling the maintaining of the provided electrical power between the two values according to a control scheme.
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Accused Products
Abstract
A renewable energy (RE) system is disclosed which comprises an energy source providing unit, a DC bus, a buck converter, an hydrogen generator, an hydrogen storage, an energy conversion device, a boost converter, a DC to AC converter, and a monitoring system.
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Citations
21 Claims
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1. An energy stand-alone supply providing electrical power to a load having an electrical power need using an energy supply source providing a source electrical power, wherein a time-variable discrepancy between said source electrical power provided by said energy supply source and said electrical power need, the energy stand-alone supply maintaining the provided electrical power between two values, the energy stand-alone supply comprising:
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a buffer receiving a source electrical power from an energy supply, the buffer further providing electrical power to a load according to an electrical power need of said load;
a first power converter connected to said buffer and providing a converted electrical power using at least one part of the source electrical power in response to a first control signal;
a hydrogen generator receiving said converted electrical power and generating hydrogen using said provided converted electrical power;
a hydrogen storage storing the generated hydrogen provided by said hydrogen generator;
a hydrogen conversion device receiving at least one part of said hydrogen of said hydrogen storage and providing a generated electrical power in response to a second control signal;
a second converter receiving said generated electrical power and providing a converted electrical power of the generated electrical power to said buffer;
a control unit providing said first and second signal, the control unit enabling the maintaining of the provided electrical power between the two values according to a control scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20)
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18. A method for providing electrical power to a load having an electrical power need using an energy supply and maintaining the provided electrical power between two values, wherein a time-variable discrepancy exists between said electrical power provided by said energy supply and said electrical power need of the load, the method comprising the steps of:
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measuring an electrical power need of a load and an available electrical power of an energy supply;
comparing said electrical power need of the load to said available electrical power of the energy supply to provide a comparison value;
if said comparison value is larger than a first predetermined value, operating a hydrogen conversion device to provide extra electrical power using hydrogen stored in a hydrogen storage, the operating increasing the available electrical power, the operating being performed until said available electrical power reaches the electrical power need of the load;
if said electrical power need of the load is lower with respect to said available electrical power of the energy supply by a second predetermined value, switching on a hydrogen generator, the switching on of the hydrogen generator providing hydrogen to the hydrogen storage, the switching on decreasing the available electrical power, the switching on being performed until said available electrical power reaches the electrical power need of the load;
whereby the operating of the hydrogen generator and the switching on of the hydrogen conversion device enable the maintaining of the available electrical power between the two predetermined values. - View Dependent Claims (19, 21)
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Specification