What is the importance of on grid inverter?

The on grid inverter sends energy directly to the grid, so it needs to track the frequency and phase of the grid, which is equivalent to a current source. Of course, some inverters have low voltage ride-through capability and can be used for PQ adjustment.

• What is the operation mode of the on grid inverter?

• What is the CEC weighted efficiency of the on grid inverter?

• What is the maximum input and output current of the on grid inverter?

What is the operation mode of the on grid inverter?

The inverter converts DC power to AC power so that it can be sent back to the grid. The frequency of the output voltage of the on grid inverter needs to be the same as the grid frequency (50 or 60Hz), which is generally achieved by the oscillator in the machine, and the output voltage will also be restricted to not exceed the grid voltage. The output power factor of modern high-quality on grid inverters can be 1, which means that the output voltage and current phase are the same, and the phase difference with the grid voltage is within 1 degree. There is a microprocessor in the on grid inverter that can sense the AC waveform of the grid, and generate a voltage based on this waveform and send it back to the grid. However, the electricity sent back to the grid needs to have a certain percentage of reactive power so that the electricity of the nearby grid is within the allowable limit. Otherwise, if the proportion of renewable energy in a certain area of the grid is high, it will be in high power output (for example, Noon) Its voltage may rise too high.

What is the CEC weighted efficiency of the on grid inverter?

The calculation method of this efficiency is based on the algorithm published by the California Energy Commission (CEC) on its GoSolar website. Different from the peak efficiency, the CEC weighted efficiency is the average efficiency, and the comparison can indicate the condition of the on grid inverter during operation. If the on grid inverter can output electric energy under several different voltages, it will also have its CEC weighted efficiency under each voltage.

What is the maximum input and output current of the on grid inverter?

Maximum input current (Maximum input current): is the maximum DC that the on grid inverter can use. If the output current of the system (such as solar cells) exceeds this upper limit, the on grid inverter cannot use this current.

Maximum output current: refers to the maximum AC that the on grid inverter can continuously provide. This value is generally used to confirm the minimum current rating of the overcurrent protection device (fuse or non-fuse switch) and the minimum current rating of the related equipment to disconnect the circuit. If the on grid inverter can output under several different AC voltages, it is also possible that each voltage has a different maximum output current.

With the development of science and technology, the important role of photovoltaic on grid inverters in the industry is getting more and more attention. Shenzhen Sumry Electronics Co., Ltd. has focused on the production and development of on grid inverters for more than ten years, and they have always put the needs of customers as their top priority. Here, you can choose the on grid inverter that suits you.