Characteristics of portable solar generator

There are so many products of portable solar generator in the market, if we do not want to dupery, then we need to understand some characteristics basic of portable solar generator, we are not engineer who must know every detail.  please check as below.

1. The major existing grid-connected solar photovoltaic portable solar generator control mode voltage source current control, the input voltage source, a current source output is controlled by controlling the output voltage of the current track and outlets to achieve the purpose of the grid.

2. For the effective use of solar energy, portable solar generator energy storage grid output power control strategy of maximum power point tracking (MPPT), does not have the power to adjust the capacity.

3. PV output greatly affected by the weather, especially in cloudy rainy day, power generation there will be drastic changes in the maximum rate of change of fast power generation exceeds 10%.

4. When a large capacity and network, due to the rapid random fluctuations characteristic of PV power generation, conventional spinning reserve capacity required for power generators to adjust compensation such that the cost of conventional electricity generators increases. Therefore, when network capacity PV and need to arrange power plan.

5. When the solar energy storage output light load, harmonics will be significantly larger, at 10% of rated output or less, the current THD will even reach 20%.

Grid inverter anti-islanding protection (anti-islanding) with correlation load conditions: Because some PV capacity with respect to the proportion of small load, after the disappearance of the mains voltage, frequency will decay rapidly, with PV capacity increasing when this system will be a variety of types of grid inverter (different protection principle), and connected to the same network, leading to interference with each other, while in the event of grid solar system and load balance the situation, the anti-islanding detection time will be significantly increase, and may even appear to detect failure.