| 摘要 |
The present invention provides a solar cell module connection board. The solar cell module connection board is arranged between a solar cell module and an inverter. The solar cell module receives sunlight and produces a direct current. The inverter converts direct current power of the solar cell module into alternating current power. The solar cell module connection board receives the direct current of the solar cell module and provides it to the inverter. The solar cell module connection board comprises; a commutated thyristor circuit unit which is connected to an output terminal of the solar cell module in series and controls the connection and cutoff of the direct current; a current sensor which is arranged between the commutated thyristor circuit unit and the inverter and senses the direct current and outputs a current signal; an analog signal processing unit which receives the current signal of the current sensor and senses a harmonic content by an arc and outputs an arc signal and senses a large arc greater than a constant standard signal and outputs a trip signal; and a processing unit which receives the trip signal and outputs a control signal to control the commutated thyristor circuit unit. |
