PHOTOVOLTAIC APPARATUS, MAXIMUM POWER POINT TRACKING CONTROL METHOD AND COMPUTER PROGRAM IN THE SAME, AND MOVING BODY INCLUDING THE SAME
First Claim
1. A photovoltaic apparatus comprising:
- a photovoltaic module that includes a plurality of series portions coupled in parallel, the series portion including a plurality of photovoltaic elements coupled in series, the photovoltaic elements coupled in a same straight row of the plurality of series portions being coupled parallel to one another; and
a tracking control device configured to perform a maximum power point tracking control on an output of the photovoltaic module, whereinthe photovoltaic module includes a temperature sensor configured to detect a real panel temperature when the photovoltaic module is operating, whereinthe tracking control device includes;
a storage unit where a plurality of panel temperature-output correlation characteristics are registered corresponding to the panel temperature, the panel temperature-output correlation characteristic preliminarily specifying a correlation relationship between the panel temperature and a characteristic of the output in the photovoltaic module;
an output characteristic selecting unit configured to;
extract one of the panel temperature-output correlation characteristics corresponding to the real panel temperature among the plurality of panel temperature-output correlation characteristics as a virtual panel temperature-output correlation characteristic; and
select a maximum power operating voltage corresponding to a maximum output in the virtual panel temperature-output correlation characteristic; and
a search start setting unit configured to extract an electric power of the photovoltaic module when a voltage of the photovoltaic module is set to a search start voltage higher than the maximum power operating voltage, as a search electric power when a search is started, whereinthe tracking control device is configured to;
start a search using the search start voltage and the search electric power when the search is started as references; and
extract a maximum power point of the photovoltaic module at the real panel temperature.
1 Assignment
0 Petitions
Accused Products
Abstract
A photovoltaic apparatus according to the present invention includes a photovoltaic module and a tracking control device. The photovoltaic module includes a plurality of series portions coupled in parallel. The series portion includes a plurality of photovoltaic elements coupled in series. The photovoltaic elements coupled in a same straight row of the plurality of series portions are coupled parallel to one another. The tracking control device is configured to perform a maximum power point tracking control on an output of the photovoltaic module. The photovoltaic module includes a temperature sensor that detects a real panel temperature that is a panel temperature when the photovoltaic module is operating.
-
Citations
12 Claims
-
1. A photovoltaic apparatus comprising:
-
a photovoltaic module that includes a plurality of series portions coupled in parallel, the series portion including a plurality of photovoltaic elements coupled in series, the photovoltaic elements coupled in a same straight row of the plurality of series portions being coupled parallel to one another; and a tracking control device configured to perform a maximum power point tracking control on an output of the photovoltaic module, wherein the photovoltaic module includes a temperature sensor configured to detect a real panel temperature when the photovoltaic module is operating, wherein the tracking control device includes; a storage unit where a plurality of panel temperature-output correlation characteristics are registered corresponding to the panel temperature, the panel temperature-output correlation characteristic preliminarily specifying a correlation relationship between the panel temperature and a characteristic of the output in the photovoltaic module; an output characteristic selecting unit configured to;
extract one of the panel temperature-output correlation characteristics corresponding to the real panel temperature among the plurality of panel temperature-output correlation characteristics as a virtual panel temperature-output correlation characteristic; and
select a maximum power operating voltage corresponding to a maximum output in the virtual panel temperature-output correlation characteristic; anda search start setting unit configured to extract an electric power of the photovoltaic module when a voltage of the photovoltaic module is set to a search start voltage higher than the maximum power operating voltage, as a search electric power when a search is started, wherein the tracking control device is configured to;
start a search using the search start voltage and the search electric power when the search is started as references; and
extract a maximum power point of the photovoltaic module at the real panel temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12)
-
-
10. A maximum power point tracking control method in a photovoltaic apparatus, wherein
the photovoltaic apparatus includes: -
a photovoltaic module that includes a plurality of series portions coupled in parallel, the series portion including a plurality of photovoltaic elements coupled in series, the photovoltaic elements coupled in a same straight row of the plurality of series portions being coupled parallel to one another; and a tracking control device configured to perform a maximum power point tracking control on an output of the photovoltaic module, wherein the photovoltaic module includes a temperature sensor configured to detect a real panel temperature when the photovoltaic module is operating, wherein the tracking control device includes; a storage unit where a plurality of panel temperature-output correlation characteristics are registered corresponding to the panel temperature, the panel temperature-output correlation characteristic preliminarily specifying a correlation relationship between the panel temperature and the output characteristic in the photovoltaic module; an output characteristic selecting unit; and a search start setting unit, wherein the maximum power point tracking control method comprises; a step of detecting a real panel temperature by the temperature sensor; a step of extracting one of the panel temperature-output correlation characteristics corresponding to the real panel temperature among the plurality of panel temperature-output correlation characteristics as a virtual panel temperature-output correlation characteristic, and selecting a maximum power operating voltage corresponding to a maximum output in the virtual panel temperature-output correlation characteristic by the output characteristic selecting unit; a step of extracting an electric power of the photovoltaic module when a voltage of the photovoltaic module is set to a search start voltage higher than the maximum power operating voltage, as a search electric power when a search is started, by the search start setting unit; and a step of starting a search using the search start voltage and the search electric power when the search is started as references, and extracting a maximum power point of the photovoltaic module at the real panel temperature by the tracking control device.
-
-
11. A computer program for a computer to execute a maximum power point tracking control in a photovoltaic apparatus, wherein
the photovoltaic apparatus includes: -
a photovoltaic module that includes a plurality of series portions coupled in parallel, the series portion including a plurality of photovoltaic elements coupled in series, the photovoltaic elements coupled in a same straight row of the plurality of series portions being coupled parallel to one another; and a tracking control device configured to perform a maximum power point tracking control on an output of the photovoltaic module, wherein the photovoltaic module includes a temperature sensor configured to detect a real panel temperature when the photovoltaic module is operating, wherein the tracking control device includes; a storage unit where a plurality of panel temperature-output correlation characteristics are registered corresponding to the panel temperature, the panel temperature-output correlation characteristic preliminarily specifying a correlation relationship between the panel temperature and the output characteristic in the photovoltaic module; an output characteristic selecting unit; and a search start setting unit, wherein the computer program causes a computer to execute; a step of detecting a real panel temperature using the temperature sensor by the tracking control device; a step of extracting one of the panel temperature-output correlation characteristics corresponding to the real panel temperature among the plurality of panel temperature-output correlation characteristics as a virtual panel temperature-output correlation characteristic, and selecting a maximum power operating voltage corresponding to a maximum output in the virtual panel temperature-output correlation characteristic by the output characteristic selecting unit; a step of extracting an electric power of the photovoltaic module when a voltage of the photovoltaic module is set to a search start voltage higher than the maximum power operating voltage, as a search electric power when a search is started, by the search start setting unit; and a step of starting a search using the search start voltage and the search electric power when the search is started as references, and extracting a maximum power point of the photovoltaic module at the real panel temperature by the tracking control device.
-
Specification