Maximum power tracking solar power system

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<ul><li><p>Patents </p><p>Batteryless solar power system App/icu1zt/llzuentor; Miguel A. Timm (USA) </p><p>This invention provides a photovoltaic energy </p><p>system rhar accumularcs mechanical energy (e.g. </p><p>pneumatic or hydraulic pressure) or performs </p><p>mechanical work (e.g. pumping water), withour </p><p>using electrochemical barrerics. </p><p>The system includes one or more PV panels, </p><p>OIlC or more high capacitance electrical </p><p>capacitors, an clecrrical motor and an electric/ </p><p>electronic control circuit. In essence, the system </p><p>rakes the energy produced by the PV modules </p><p>and accumulates ir in the capacitors. </p><p>Once enough energy is accumulated to run </p><p>the motor, the controller circuit activates the </p><p>motor. As the motor consumption is larger than </p><p>the power produced by the PV module, it takes </p><p>current from the charged capacitors and the voltage in the capacitors quickly decreases. Once </p><p>the volragr reaches a minimum where the operation of the motor is no longer practical, the control circuit stops the motor to let the PV </p><p>modules techargc the capacitors, and the cycle is </p><p>then repeated. </p><p>What the above arrangement doe5 is to take </p><p>the small amount of power generated by a PV </p><p>module and concentrate it in an electrical </p><p>capacitor. The accumulated energy is then L&amp; </p><p>to produce a burst of power to run an electrical </p><p>motor, which in turn performs the desired </p><p>mechanical work such as compressing air, </p><p>pumping hydraulic pressure or pumping water. </p><p>Pamit turmhr~r US 6367259 Izrblic&amp;on ~OWCI </p><p>generation systems and drvices, and cmcrgenc! </p><p>power supplies: monitoring and detection </p><p>equipment for power and/or hrnaing. </p><p>inspection devices. radiation detectors, imaging </p><p>devices; md optical coupling dcviccs for </p><p>electrical isolation or use in fibrc optic </p><p>communications. </p><p>Patem wmbw: US 6352377 </p><p>Publicatio?2 dzte: March 5. 2002 </p><p>hvemovs: Vladimir Rulovic, Srephcn K Forrest </p><p>Maximum power tracking solar power system Applicant: The Aerospace Corporation, USA </p><p>A maximum power tracker maximises the powcr </p><p>deliverable from a power source, such as a solar </p><p>array using increasing, decreasing d </p><p>maintaining states, controlled by a set point </p><p>signal, modulated by a dither signal for stabilised </p><p>regular power tracking during under-drmand </p><p>conditions and maximum power tracking during </p><p>periods with over-demand conditions of J load. </p><p>Multiple converters and respectively maximum </p><p>power trackers can be coupled in parallel, using </p><p>shared bus contl-ol signal&lt; for fault-tolerant </p><p>equalised power convrrsion through the </p><p>converters. </p><p>Patext number: US 6369462 </p><p>Publiukon dute: April 9. 2002 </p><p>/nuextor: Siri Kasemsan </p><p>63 Photovoltaics Bulletin May 2002 </p></li></ul>


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