Microinverter
In residential photovoltaic systems Micro inverters are often used as an alternative to string inverters to perform the DC to AC power conversion at panel level helping maximize energy yield and mitigate problems related to partial shading, dirt or single panel failures. In a micro inverter there is a DC-DC converter - implementing Maximum Power Point Tracking (MPPT) - and a DC-AC inverter to shape current and voltage for injection into the AC grid. Data – including voltage, current and power generated - from all the micro inverters in the installation are collected by a concentrator and dispatched to a local or remote monitoring and control access point.
Our solution includes MDMESH power MOSFETs, high-voltage, galvanically isolated gate drivers, high-voltage silicon-carbide (SiC) diodes together with high-performance STM32 microcontrollers - providing a set of dedicated peripherals to help implement complex power conversion control algorithms. Metering ICs and a range of wireless and wired connectivity solutions including multi-standard Power line modems complete the solution.
Resources
Technical Documentation
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AN4070: 250 W grid connected microinverter | 1.0 | 4 MB |
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AN604: Calculation of conduction losses in a power rectifier | 3.2 | 137 KB |
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AN4021: Calculation of reverse losses in a power diode | 1.0 | 120 KB |
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AN4381: Current sharing in parallel diodes | 1.0 | 449 KB |
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AN4653: Cycling endurance and data retention of high density EEPROM based on CMOS F8H process | 1.0 | 267 KB |
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AN3432: How to choose a bypass diode for silicon panel junction box | 1.0 | 290 KB |
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AN1453: NEW FAMILY OF 150V POWER SCHOTTKY | 1.1 | 131 KB |
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AN4242: New generation of 650 V SiC diodes | 2.0 | 4 MB |
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AN5046: Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT™ packages | 3.0 | 5 MB |
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AN5088: Rectifiers thermal management, handling and mounting recommendations | 2.0 | 2 MB |
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AN533: SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting | 3.4 | 216 KB |
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AN443: SERIES OPERATION ON FAST RECTIFIERS | 2.1 | 202 KB |
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AN4068: ST7580 power line communication system-on-chip design guide | 2.0 | 5 MB |
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AN4390: ST’s MOSFET technologies for uninterruptible power supplies | 1.1 | 1 MB |
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AN1542: THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION | 1.1 | 57 KB |
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AN869: Tj max limit of Schottky diodes | 2.2 | 60 KB |
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DN0010: Adapting ST power line modem evaluation boards to communicate over a DC bus | 1.1 | 405 KB |
Presentations & Training Material
| Description | Version | Size | |
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EEPROM 2 Mbit highest density memories | 1.0 | 2 MB |
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Microinverter_marketing_pres | 2.2 | 638 KB |
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ST products and solutions for solar energy | 5.1 | 2 MB |
Publications and Collaterals
| Description | Version | Size | |
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400/650 V MDmesh™ DM2: ST’s new MOSFET series with integrated fast-recovery body diode | 1.0 | 334 KB |
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60, 80 and 100 V STripFET™ F7 MOSFETs | 1.0 | 764 KB |
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Industrial-grade SiC diodes - 650V and low VF - to boost the performance of power converters | 2.0 | 958 KB |
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ST Diodes Finder : the new app for Android and iOS | 2.0 | 1 MB |
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Turnkey PLC chipset for smart-energy infrastructure | 10.2017 | 775 KB |
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Brochure Power management guide | 10.2018 | 4 MB |
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Products and solutions for solar energy | 1.0 | 1 MB |
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STM32F3 series - Mainstream 32-bit MCUs | 17.09 | 2 MB |
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Innovative architectures for solar energy applications: st microinverter system solution | 1.0 | 614 KB |
