Solar photovoltaic system including a power conditioner

A solar photovoltaic power generator system which includes a solar cell panel, and a power conditioner which controls a voltage or a current of generated power output from the solar cell panel as a first operating value in accordance with an operation characteristic of the solar cell panel to search a maximum output point of the generated power so as to be supplied to a power system, wherein:

• the power conditioner includes an inverter that converts the generated power output from the solar cell panel into a commercial power, an Automatic Voltage Regulator (AVR) control module that outputs a Pulse Width Modulation (PWM) instruction to the inverter so that the first operating value at least at 3 points of the generated power output from the solar cell panel is subjected to a variance control, a data memory module that stores the first operating values at 3 points under the variance control, and sloping patterns at 3 points of the generated powers from the solar cell panel based on the first operating values, and a maximum power point tracking module that adds a new operating value to a part of the first operating values in a past search of the maximum output point based on a sloping pattern of the generated power in the past search, and calculates second operating values for a next search of the maximum output point so as to be supplied to the AVR control module;
• and
• the maximum power point tracking module sets a right-side operating value of the second operating values for the next search to a right side of the operation characteristic of the solar cell panel when the generated power in the past search has an upward sloping pattern, sets a left-side operating value for the next search to a left side of the operation characteristic of the solar cell panel when the generated power in the past search has a downward sloping pattern, and adds an inner operating value to be at an inner side of the operating values at 3 points when the generated power in the past search has a triangle pattern, which are calculated as the second operating values for the next search.

A solar photovoltaic power generator system which includes a solar cell panel, and a power conditioner which controls a voltage or a current of generated power output from the solar cell panel as a first operating value in accordance with an operation characteristic of the solar cell panel to search a maximum output point of the generated power so as to be supplied to a power system, wherein:

• the power conditioner includes an inverter that converts the generated power output from the solar cell panel into a commercial power, an Automatic Voltage Regulator (AVR) control module that outputs a Pulse Width Modulation (PWM) instruction to the inverter so that the first operating value of the generated power at least at 3 points output from the solar cell panel are subjected to a variance control, a data memory module that stores a plurality of the first operating values under the variance control and a plurality of sloping patterns of the generated powers from the solar cell panel based on the first operating values, and a maximum power point tracking module that calculates second operating values for a next search of the maximum output point based on a sloping pattern of the generated power in a past search of the maximum output point so as to be supplied to the AVR control module;
• and
• when the generated power in the past search has a sloping pattern in one direction, the maximum power point tracking module adds a new operating value to a part of those in the past search to calculate the second operating values for the next search so as to be set at a side opposite the first operating values in the past search, expected to have a maximum point of the operation characteristic of the solar cell panel.