Grid-Tied Photo voltaic Micro Inverter Reference Design

Designed for numerous industrial functions—together with central inverters, single-phase string inverters, and modular micro inverters—this grid-tied photo voltaic micro-inverter answer offers a sturdy, adaptable platform for advancing photo voltaic power methods worldwide.

This reference design introduces a digitally-controlled, grid-tied photo voltaic micro inverter with most energy level monitoring (MPPT), tailor-made for contemporary solar energy functions. Photo voltaic micro inverters mark a big innovation within the photo voltaic trade by providing an alternative choice to conventional methods that join all photo voltaic panels to a central inverter. As an alternative, every photo voltaic panel connects to its micro inverter, leading to a number of benefits, equivalent to eliminating partial shading points, enhanced effectivity, improved reliability, and modular scalability.

This design TIDM-SOLARUINV by Texas Devices is the C2000 Piccolo TMS320F28035 microcontroller (MCU), which features because the digital controller for the complete inverter system, together with management of energy levels, MPPT, and synchronization with the grid. The ability conversion course of depends on two key levels: an energetic clamp fly-back DC/DC converter with a secondary voltage multiplier and a grid-tied DC/AC inverter. This method achieves a peak effectivity of 93% and maintains lower than 4% complete harmonic distortion (THD), maximizing energy output, lowering warmth dissipation, and increasing system longevity.

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This design affords versatile help for panel enter voltages starting from 28V to 45V, and it delivers common energy outputs—as much as 280W for 220VAC methods and as much as 140W for 110VAC methods—guaranteeing compatibility with numerous international photo voltaic market necessities. The high-frequency operation of the inverter at 100 kHz minimizes harmonic distortion and reduces the price of passive parts, enhancing general system effectivity and affordability.

The only-MCU structure, pushed by the C2000 Piccolo F28035, simplifies system design, reduces price, and permits exact high-frequency management loops for each DC/DC and DC/AC energy levels. Pre-designed software program libraries additional improve customization, providing optimized constructing blocks for energy topologies and algorithms like MPPT and software program phase-locked loops (PLL). The design package deal features a fully-functional analysis board full with {hardware} design recordsdata, pre-loaded software program, a quick-start graphical interface, and detailed documentation for streamlined implementation. This complete strategy helps the event of environment friendly, dependable, and customizable photo voltaic options.

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TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) format, and extra. The corporate’s web site has further knowledge in regards to the reference design. To learn extra about this reference design, click on right here.