ALTERNATIVE ENERGY
Solar Micro-Inverter
Solar micro-inverters work based on Digital Signal Controller (DSCs) that boast powerful algorithms to provide the features of both off-grid and on-grid inverters, so that functions such as MPPT (Maximum Power Point Tracking), charge management, inversion, and connection with grid can be enabled on a single device. A micro-inverter is built with battery charge management, an inversion circuit and a relay.
Battery charge management includes a DC-DC module, and circuits for detection of input/output voltage and current. It provides MPPT and charge management functions under the control of a DSC. Inversion circuit is made up of four circuits: input filter circuit is implemented with filter capacitors which are used to reduce input voltage ripples; boost circuit includes a Schottky diode, an inductor and a DSC-driven MOSFET to boost a low DC voltage (usually 12-36V) provided by batteries to a high DC voltage; single-phase full-bridge inverter consists of 4 MOSFETs which are driven by a DSC to convert high-voltage DC power into 50-60Hz AC power; output filter circuit uses two inductors and a capacitor to eliminate harmonics of output voltage. Relay could be functioning either to supply power for AC loads or to lead current to power grid under the control of a DSC. When micro inverters are connected to AC loads such as home appliances and lights, relays can be switched on under any condition. But if inverters are connected to the power grid, relays should stay switched-off until a match is found on voltages and phases between the relays’ output end and power grid. Inverters can display operation status, input/output voltage and current. They also have keys for configuring necessary parameters to ensure proper operation.
Hover over the diagram blocks to view recommended products for this solution:
Multi PWM output DSC
FREESCALE
2808PZA
TEXAS INSTRUMENTS
Microchip
NATIONAL SEMICONDUCTOR
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High reliability digital isolator or photocoupler
ANALOG DEVICES
Broadcom
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300V,3A,MOSFET
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Low resistance, precision resistor
TE CONNECTIVITY / CGS
PANASONIC
Hall current sensor or current transformer
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EPCOS
HONEYWELL S&C
LEM
15-30A, power inductor
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Wurth
Cable for solar panel
Lapp Kabel
TE CONNECTIVITY
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Connector for solar panel
Multi Contact
TE CONNECTIVITY
Amphenol
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Capacitor
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Capacitor
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Battery
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Connector
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Signal Conditioning
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NATIONAL SEMICONDUCTOR
NATIONAL SEMICONDUCTOR
Signal Conditioning
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NATIONAL SEMICONDUCTOR
NATIONAL SEMICONDUCTOR
Signal Conditioning
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TEXAS INSTRUMENTS
Signal Conditioning
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TEXAS INSTRUMENTS
Signal Conditioning
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TEXAS INSTRUMENTS
Signal Conditioning
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TEXAS INSTRUMENTS
 | MC56F8006DEMO-T FREESCALE MC56F8006DEMO is a cost-effective board targeting quick digital signal controller (DSC) evaluation, demonstration and debugging of the NXP MC56F8006VLF digital signal controller. | BUY |
 | TMDSHVMPPTKIT TEXAS INSTRUMENTS EVAL, KIT, SINGLE PHASE, INVERTER | BUY |
| TEXAS INSTRUMENTS | DSC | EEPROM Emulation With the TMS320F28xxx DSCs | TMS320F28xxx | Click here | |
| TEXAS INSTRUMENTS | DSC | Optimizing Code Performance and Size for Stellaris Microcontrollers | Click here | ||
| TEXAS INSTRUMENTS | DSC | Clocking options for Stellaris Family Microcontrollers | Click here | ||
| TEXAS INSTRUMENTS | DSC | Advanced Linker Techniques for Convenient and Efficient Memory Usage | Click here | ||
| TEXAS INSTRUMENTS | DSC | Using PWM Output as a Digital-to-Analog Converter on a TMS320F280x (Rev. A) | TMS320F280x | Click here | |
| TEXAS INSTRUMENTS | DSC | Flash Programming Solutions for the TMS320F28xxx DSCs | Click here | ||
| TEXAS INSTRUMENTS | DSC | An Overview of Designing Analog Interface With TM320F28xx/28xxx DSCs (Rev. A) | TM320F28xx | Click here | |
| TEXAS INSTRUMENTS | DSC | Copying Compiler Sections from Flash to RAM on the TMS320F28xxx DSCs | TMS320F28xxx | Click here | |
| TEXAS INSTRUMENTS | DSC | Configuring Source of Multiple ePWM Trip-Zone Events | Click here | ||
| TEXAS INSTRUMENTS | DSC | TMS320F281x Boot ROM Serial Flash Programming | TMS320F281x | Click here | |
| MICROCHIP | Power | AN1278 - Digital Power IPFC Reference Design Application Note | AN1278 | Click here | |
| MICROCHIP | DSC | Implementing Digital Lock-In Amplifiers Using the dsPIC® DSC | AN1115 | dsPIC | Click here |
| MICROCHIP | DSC | Achieving Higher ADC Resolution Using Oversampling | AN1152 | Click here | |
| MICROCHIP | DSC | Bootloader for dsPIC30F/33F and PIC24F/24H Devices | AN1094 | PIC24F/24H, PIC30F/33F | Click here |
| MICROCHIP | DSC | Using the C30 Compiler to Interface Serial EEPROMs with dsPIC33F | AN1100 | dsPIC33F | Click here |
| FREESCALE | DSC | Smart Energy Brochure | Click here | ||
| FREESCALE | DSC | Design of Indirect Power Using the 56F800/E | AN1965 | 56F8000 Family | Click here |
| FREESCALE | DSC | Production Flash Programming for the 56F8000 Family | AN3118 | 56F8000 Family | Click here |
| FREESCALE | DSC | Solar Maximum Power Point Tracking and Solar Inverter Solutions with NXP DSCs | 56F8000 Family | Click here | |
| INTERNATIONAL RECTIFIER | IGBT | Choose Your IGBTs Correctly for Solar Inverter Applications | Click here | ||
| TEXAS INSTRUMENTS | Solar Power | TMS320C2000™ DSP Controllers: A Perfect Fit for Solar Power Inverters | C2000 Family | Click here | |
| Microchip | DSC | Grid-Connected Solar Microinverter Ref. Design Using a dsPIC® DSC | AN1338 | Click here | |
| Vishay | Resistors | Precision Resistors for Energy, Transportation and High-Temperature Applications | 103 | Click here | |
| Vishay | Resistors | “Mind the Gap”: High Precision Bulk Metal® Foil Resistors, Their Imposters and Impersonators | 118 | Click here | |
| Microchip | DSC | Phase-Shifted Full-Bridge (PSFB) Quarter Brick DC/DC Converter Reference Design Using a dsPIC® DSC | AN1335 | Click here | |
| Microchip | DSC | Grid-Connected Solar Microinverter Ref. Design Using a dsPIC® DSC | AN1338 | Click here | |
| Texas Instruments | MOSFET driver | SM72295 Photovoltaic Full Bridge Driver | SNVS688D | SM72295 | Click here |
| Texas Instruments | ADC | Powerline Communications Analog Front-End | SBOS531C | AFE031 | Click here |
| Microchip | SMPS AC/DC Reference Design | DS70320B | Click here | ||
| Texas Instruments | MOSFET driver | SolarMagic ICs in Micro-inverter Applications | AN2116 | SM72295 | Click here |
| Manufacturer | Product Type | AN Title | AN Number | Part Number | URL |
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| NXP | DSC | Benefits and Applications Enabled by Expanded 56F8000 Digital Signal Controllers | Click here |
| NXP | DSC | 56F83xx Lends Hybrid Applications EEPROM Capability FlashEE | Click here |
| NXP | DSC | Novel Digital Signal Processing Architecture With Microcontroller Featuers | Click here |
| NXP | DSC | Applications Enabled by High-Performance Hybrid Controllers | Click here |
| TEXAS INSTRUMENTS | MCU | Design considerations when selecting a TI ARM-based processor for industrial app | Click here |
| TEXAS INSTRUMENTS | MCU | Serial Wire Debug—Ideal for Microcontrollers | Click here |
| TEXAS INSTRUMENTS | DSP | The TMS320 DSP Algorithm Standard White Paper | Click here |
| TEXAS INSTRUMENTS | DSP | Fixed vs. Floating Point white paper | Click here |
| TEXAS INSTRUMENTS | DSP | Optimizing Power Consumption in DSP Designs Whitepaper | Click here |
| TEXAS INSTRUMENTS | DSP | Software and Hardware Design Challenges due to Dynamic Raw NAND Market | Click here |
| TEXAS INSTRUMENTS | DSP | Fixed vs. Floating Point white paper | Click here |
| TEXAS INSTRUMENTS | DSP | The TMS320 DSP Algorithm Standard White Paper | Click here |
| Manufacturer | Product Type | White Paper Title | URL |
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| MICROCHIP | DSC | Buck/Boost Converter PICtail™ Plus Daughter Board | AC164133 | dsPIC33 | Click here |
| MICROCHIP | DSC | PICtail Plus Daughter Board for dsPIC33 | DM240001 | dsPIC33 | Click here |
| OLIMEX | DSC | TMS320-P28016 development board | TMS320-P28016 | TMS320F28016 | Click here |
| SPECTRUM DIGITAL | DSC | DSP Development Systems for F2812 | EZDSP F2812 | TMS320F2812 | Click here |
| SPECTRUM DIGITAL | DSC | DSP Development Systems for F28335 | EZDSP F28335 | TMS320F28335 | Click here |
| Manufacturer | Product Type | Evaluation Kits Title | EVKs Part Number | Part Number | URL |
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| MICROCHIP | Alternative Energy | Microchips Grid Connected Solar Microinverter Reference Design | Click here | |
| MICROCHIP | DSC | DSPIC33F: High Performance, 16-bit Digital Signal Controllers | Click here | |
| MICROCHIP | DSC | dsPIC33FJ06GSXXX DSCs | dsPIC33FJ06GS | Click here |
| MICROCHIP | Battery | Battery Charger Basics | Click here | |
| MICROCHIP | Solar Power | Grid Connected Solar Microinverter Reference Design | dsPIC33F family | Click here |
| MICROCHIP | DSC | Grid-Connected Solar Micro Inverter Reference Design | Click here | |
| Manufacturer | Product Type | Training Title | Part Number | URL |
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