System Design
With multiple inverters to distribute the load, the Nextronex® Ray-MaxTM System is a combination of proven technology and innovative thinking. We've evaluated and addressed every aspect of how power inverters impact the energy and cost efficiency of solar power generation, from the reduced installation requirements to the final output.
So Here's How It All Works
A 1 mW solar array would utilize 6 Ray-MaxTM Solar Inverters, with the required bus length and number of Zone boxes depending on the panel type and layout.
Overnight, our inverters are all asleep, consuming less than 10 watts each. The Smart Controller consumes less than 100 watts, continuously. Other than the utility interconnect transformer, the overnight tare loss of the Nextronex system is less than 200 watts.
At sunrise, when DC voltage appears on the Bus, the Smart Controller wakes up the youngest inverter (the one with the least run time), and this inverter harvests the entire array output managing the MPPT point, until it reaches 85% of its capacity. At this point the proprietary Nextronex Energy System takes over. Additional inverters are switched on-line (and off-line) as needed to continuously maximize the energy harvesting.
Design Benefits
- Significantly Improved Low-light Level Energy Harvesting - which can result in up to 6% improvement in annual energy harvesting.
- Enhanced Reliability - In temperate climates, each inverter runs less than 8 years out of 20, so it will last much longer.
- Improved Uptime - If an inverter does fail, the PLC controller will bypass it and utilize the capacity of the remaining inverters to harvest as much available energy as possible. In temperate climates, this can be 100% of the power over 97% of the time.
The Inverter AC Design
The Ray-MaxTM inverters do not have internal transformers. The self-commutated design utilizes state-of-the-art switching devices, advanced cooling technology and a highly efficient AC filter.
Our design does not utilize DC to DC upconverters. We directly drive the AC output from gated IGBT's driven directly from the DC Bus. This is the most efficient design, and it means that both the AC output voltage, and the maximum power output are a function of the DC input voltage.
Efficient Installation
The Nextronex system requires fewer installation resources while optimizing equipment utilization and uptime. 
Nextronex® Ray-MaxTM System brings simplicity and flexibility to the field with standard kits that allow for expansion with energy-saving add-ons. See how easy it is to get started. 
As the only 1000V approved system in the USA, Nextronex® technology brings more power to the party, plus a whole host of other advantages that only a multi-inverter system like ours can provide. See the advantages in this side-by-side comparison of systems. 
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