AN INTRA-MODULE DC-DC CONVERTER AND A PV-MODULE COMPRISING SAME
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Abstract
The present invention relates to an intra-module DC-DC power converter and a Photovoltaic (PV) module comprising same. The switching frequency of said intra-module DC-DC power converters may be 500 kHz. The PV module may have a controller and a plurality of switches for allowing each individual string of said PV module to be connected to one corresponding DC-DC converter, or for allowing two or more strings of said module to be connected in series and to apply the voltage of the combined string to a single DC-DC converter. The input voltage range of the DC-DC converters may be 10V to 30V, and the output voltage range may be 120V. The DC-DC converters may be connected in series or in parallel. Multiple such PV panels may be connected in a DC-grid.
7 Citations
42 Claims
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1-25. -25. (canceled)
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26. A circuit for obtaining power from a photovoltaic unit, the circuit comprising an intra-module DC-DC power converter, wherein said intra-module DC-DC power converter comprises:
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at least one multiplier stage (M), said multiplier stage comprising two capacitors (CM1, CM2), each capacitor respectively connected to a diode (DM1, DM2), and wherein said diodes (DM1, DM2) of the at least one multiplier cell are adapted to charge the multiplier capacitors (CM1, CM2) with a charge voltage (VM), and wherein an input signal (Vin) from the photovoltaic unit is converted into an output signal wherein said output signal is (M+1) times the charge voltage (VM). - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 42)
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35. A system for controlling a plurality of photovoltaic units, the system comprising:
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a first circuit comprising a first intra-module DC-DC power converter coupled or connected to a first photovoltaic unit, the first circuit comprises an intra-module DC-DC power converter, wherein said intra-module DC-DC power converter comprises;
at least one multiplier stage (M), said multiplier stage comprising two capacitors (CM1, CM2), each capacitor respectively connected to a diode (DM1, DM2), and wherein said diodes (DM1, DM2) of the at least one multiplier cell are adapted to charge the multiplier capacitors (CM1, CM2) with a charge voltage (VM), and wherein an input signal (Vin) from the photovoltaic unit is converted into an output signal (Vout), wherein said output signal is (M+1) times the charge voltage (VM);a second circuit comprising a second intra-module DC-DC power converter coupled or connected in series or parallel with the first intra-module DC-DC power converter and coupled or connected to a second photovoltaic unit; a controller that is adapted to control a voltage of the first and second intra-module DC-DC power converters. - View Dependent Claims (36, 37)
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38. A photovoltaic module comprising a circuit or comprising a system for controlling a plurality of photovoltaic units, wherein the switching frequency lies in the range of 400 to 500 kHz, and the output voltage lies in the range of 120 to 360 V;
wherein the circuit comprises an intra-module DC-DC power converter, wherein said intra-module DC-DC power converter comprises; at least one multiplier stage (M), said multiplier stage comprising two capacitors (CM1, CM2), each capacitor respectively connected to a diode (DM1, DM2), and wherein said diodes (DM1, DM2) of the at least one multiplier cell are adapted to charge the multiplier capacitors (CM1, CM2) with a charge voltage (VM); wherein an input signal (Vin) from the photovoltaic unit is converted into an output signal (Vout), wherein said output signal is (M+1) times the charge voltage (VM); wherein the system comprises a first circuit comprising a first intra-module DC-DC power converter coupled or connected to a first photovoltaic unit, the first circuit comprises an intra-module DC-DC power converter, wherein said intra-module DC-DC power converter comprises;
at least one multiplier stage (M), said multiplier stage comprising two capacitors (CM1, CM2), each capacitor respectively connected to a diode (DM1, DM2), and wherein said diodes (DM1, DM2) of the at least one multiplier cell are adapted to charge the multiplier capacitors (CM1, CM2) with a charge voltage (VM), and wherein an input signal (V) from the photovoltaic unit is converted into an output signal (Vout), wherein said output signal is (M+1) times the charge voltage (VM);a second circuit comprising a second intra-module DC-DC power converter coupled or connected in series or parallel with the first intra-module DC-DC power converter and coupled or connected to a second photovoltaic unit; a controller that is adapted to control a voltage of the first and second intra-module DC-DC power converters. - View Dependent Claims (39, 40, 41)
Specification