Safety, speed and cost benefit of solar inverter

Solar energy is no longer an emerging technology, but a technology that is undergoing major technological changes. As we move toward grid parity (The cost of solar energy is equivalent to that of traditional power generation) and improving traditional energy generation types, because the process of converting direct current into usable alternating current in the panel becomes more efficient and affordable.

However, although the solar panel prices have decreased significantly in recent years, the next development of solar energy development will be driven by the new technology of power converter system. The rise of multistage power switch topology sophisticated will be based on silicon carbide (SiC) and gallium nitride (GaN) materials, coupled with higher operating voltages (up to 1600 VDC), the power switch more quickly, compared with the traditional system, the performance will be greatly improved. Higher switching frequency means that the passive components of the power converter, that is, the size of the induction coil and capacitor can be greatly reduced, thereby reducing the weight and reducing the cost. These two points are the key advantages of solar energy market further expansion.

As a result, these new power switching topologies are driving changes in devices that provide relevant control and support. Smaller and faster systems require improvements in the whole power conversion signal chain, faster processing, and better device integration. However, as modern solar inverters become smaller and smaller, these innovations exacerbate the challenge of addressing the important security issues inherent in power conversion. That is, the physical isolation of dangerous voltages becomes more complex as these systems shrink in size.

Although the solar panels or solar modules are the core of the solar power system, but in the whole signal chain, the more complex part is the solar power inverter – the brain of the control system. Solar inverters need to be carefully designed to protect the current measurement and calculation circuit, so that it is not affected by the power processing circuit and the transient signal caused by the switch. However, this protection is costly: multiple redundant isolation devices can increase cost and system complexity. And it is clear that the increasingly complex algorithms required to run these systems through programmable processors need to consider code integrity to ensure the security of the system itself.

In addition, official security certification is a requirement for all developers. A lot of regulations about safety disconnection (and reconnection) must be followed. How fast the system must respond, how to deal with power outages and power outages, fast disconnect and arc detection, must be resolved – in many cases, each country / region has different solutions. Since certification increases the development time (cost), the proven devices and methods are attractive, and need to be flexible enough to accommodate multiple evolving regional safety regulations.

Fortunately, these problems can be easily solved by using a power inverter platform that can be integrated with advanced mixed signal control processors, and is isolated by complementary isolation of current detection and gate driver technology.

REVO Series Wall Mounted Integrated Solar Hybrid Grid Tie Inverter With Built-in MPPT Solar Controller

1.Touch screen display.
2.Output power factor PF=1.0
3.On grid with energy storage.
4.Energy generated record, load record, history information and fault record.
5.Language and time setting.
6.Structure with dust filter.
7.AC charging and AC output time setting.
8.Charging voltage and charging current timing.
9.External wi-fi device optional.
10.Parallel operation with up to only available for.
11.Smart battery charger design.

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