One of the main concepts to understand when looking at commercial inverters is three phase electric power. It is the most common and efficient method of distributing large volumes of electricity by national grids worldwide. In a three-phase system, power is efficiently carried by a three-conductor system handling three alternating currents of the same frequency, which reach their instantaneous peak values at different times. The method is widely used in commercial applications due to its favorable properties in powering generators and motors.
These days there is a wide range of inverter sizes for optimal stringing and design flexibility. Commercial inverters set the industry standards in efficiency, high reliability, ease of installation, and lifetime maintainability.
Their 20+ year design life is enabled by an array of new market-leading reliability features, including bus bars for all power connections, a sealed electronics module, and an instrumented cooling system. The highly integrated systems were designed to save commercial installers time and money with best-in-class efficiency and the widest voltage window operating range with the lowest standard MPPT voltage of any three-phase inverter in the industry.
These inverters are typically used for applications requiring variable frequency drive and high power applications, such as High-Voltage Direct Current (HVDC) power transmission. Variable frequency drive is a system for controlling motor speeds by modulating the electrical frequency supplied to the load. The highly flexible inverter systems used in commercial applications can deliver 120V, 240V, and 208V with minimal losses in conversion efficiency.