Micro inverter of solar power system and method of operating the same
AssigneeDelta Electronics, Inc.
InventorSheng-Hua LI
Life of this patent
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Abstract
A method of operating a micro inverter of a solar power system includes following steps: First, an output power value of a solar photovoltaic module is acquired. Afterward, it is to judge whether the micro inverter executes a power boosting mode. If the power boosting mode is executed, a maximum output power of the micro inverter is boosted from a rated output power value to a maximum output power value. Finally, it is to judge whether the output power value of the solar photovoltaic module is greater than the maximum output power value. If YES, the maximum output power value is outputted from the micro inverter.
Claims20
A micro inverter of a solar power system, the solar power system having a solar photovoltaic module producing a solar photovoltaic module output power, the micro inverter comprising:
- a DC-to-DC converter configured to receive a DC voltage generated from the solar photovoltaic module, and produce a DC output voltage;
- a DC-to-AC converter configured to receive the DC output voltage, and produce a micro inverter output power;
- a temperature sensor configured to detect an ambient temperature around the solar photovoltaic module, and produce a temperature detection signal;
- and
- a microprocessor configured to receive the temperature detection signal and a power boosting signal;
- wherein the microprocessor is configured to correspondingly acquire an output power value of the solar photovoltaic module according to the temperature detection signal when the power boosting signal is enabled, and produce a first control signal to control the DC-to-DC converter and produce a second control signal to control the DC-to-AC converter, thus increasing an output power value of the micro inverter.
A micro inverter of a solar power system, the solar power system having a solar photovoltaic module producing a solar photovoltaic module output power, the micro inverter comprising:
- a DC-to-DC converter configured to receive a DC voltage generated from the solar photovoltaic module, and produce a DC output voltage;
- a DC-to-AC converter configured to receive the DC output voltage, and produce a micro inverter output power;
- a voltage detector configured to detect the DC voltage generated from the solar photovoltaic module, and produce a voltage detection signal;
- a current detector configured to detect a DC current generated from the solar photovoltaic module, and produce a current detection signal;
- and
- a microprocessor configured to receive the voltage detection signal, the current detection signal, and a power boosting signal;
- wherein the microprocessor is configured to acquire an output power value of the solar photovoltaic module according to a product of the voltage detection signal and the current detection signal when the power boosting signal is enabled, and produce a first control signal to control the DC-to-DC converter and produce a second control signal to control the DC-to-AC converter, thus increasing an output power value of the micro inverter.
A method of operating a micro inverter of a solar power system, the solar power system having a solar photovoltaic module producing a solar photovoltaic module output power;
- a micro inverter configured to receive the solar photovoltaic module output power and produce a micro inverter output power, the method comprising following steps:
- (a) acquiring an output power value of the solar photovoltaic module;
- (b) judging whether the micro inverter executes a power boosting mode;
- (c) boosting the maximum output power of the micro inverter from a rated output power value to a maximum output power value when the micro inverter executes the power boosting mode;
- (d) judging whether the output power value of the solar photovoltaic module is greater than the maximum output power value;
- and
- (e) outputting the maximum output power value from the micro inverter when the output power value of the solar photovoltaic module is greater than the maximum output power value.
Dependencies are inferred from the claim text.