Solar photovoltaic system including a power conditioner

摘要

Disclosed is a solar photovoltaic power generator system that includes a solar cell panel and a power conditioner that controls a voltage or a current of generated power output from the solar cell panel as an operating value in accordance with a 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. The power conditioner includes a data memory module that stores a plurality of operating values and a plurality of patterns of the generated powers from the solar cell panel based on the operating values, and a maximum power point tracking module that adds a new operating value based on the pattern of the generated power in the past to calculate the operating values for the next search, and sets the maximum value through an algorithm.

主权项

1. 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 a 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 output from the solar cell panel is 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 patterns of 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 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 when the maximum power point tracking module executes the search of the maximum output point repeatedly to update the first operating value, and a deviation of a plurality of generated powers repeatedly output becomes equal to or smaller than a predetermined value, the maximum output value is set.