5kW Solar Grid-Tie Inverter

@eslamsaeid1991

Hello sir, As a Senior Power Electronics & Embedded Systems Engineer, I specialize in Grid-Tie Inverter Topology and high-efficiency energy conversion. I will engineer a comprehensive 1 kW – 5 kW hybrid inverter prototype, ensuring that the MPPT stages, battery management, and Wi-Fi monitoring are technically coordinated for maximum throughput and strict anti-islanding safety. Engineering Goal & Impressive Solution Summarized as the delivery of High-Efficiency SiC-Based Hybrid Conversion. My solution solves the "Thermal & Conversion Loss" problem by utilizing a Transformerless H6 Bridge Topology with Silicon Carbide (SiC) MOSFETs, achieving ≥97% peak efficiency. I implement a Dual-Stage MPPT and a DSP-driven Phase-Locked Loop (PLL) for rock-solid 230V/50Hz grid tie-in. The firmware integrates a Real-Time FreeRTOS Kernel to manage simultaneous high-speed switching, IEEE 1547 compliant anti-islanding, and asynchronous ESP32-based Wi-Fi telemetry for your remote dashboard. BOM & Technical Specifications BOM: Itemized with Tier-1 components (e.g., Infineon CoolMOS, TI C2000 Controller, Allegro Current Sensors). Magnetics: Detailed design for the Boost Inductor (Sendust core) and LCL Grid Filter to minimize THD. Firmware: Modular C-code covering Space Vector PWM, battery SOC algorithms, and MQTT-based data streaming. Regards, Eslam

@Ryan15222

As someone with a multidisciplinary approach to engineering, I can ensure that your project for a 5kW Solar Grid-Tie Inverter is handled comprehensively and diligently. From electrical design, control strategies, MPPT stages to grid-synchronisation logic, I will prioritize high-efficiency power conversion and seamless battery-backup integration - exactly what you desire. Furthermore, my experience in developing firmware for real-time data streaming, anti-islanding protection, battery charging/​discharging at real-time,wiring diagrams using Wi-Fi or Bluetooth will ensure a remote dashboard that caters adequately and conveniently to your monitoring needs. Additionally, my ability to work with microcontrollers and PCB layouts, amongst other skills, gives an added advantage to the project as well as my problem-solving abilities garnered from working with various cross- functional teams. In conclusion, I have proven experience delivering complete solutions from concept to build including compliance with relevant standards like UL 1741 /IEEE 1547. I am genuinely excited about collaborating with you on this project. With me, not only will you get the necessary deliverables but you will also benefit from a seasoned engineer who understands the importance of efficiency, scalability and real-world constraints. Don't miss this chance to bring our ideas to life!

@aleksandarm72

Hello, To address your requirements for a robust, high-efficiency (≥95%) inverter, I propose a design architecture derived from my experience in 200kW industrial systems, now scaled into a 1kW–5kW proof-of-concept. Technical Framework: 1. Electrical: I will implement a non-isolated H-Bridge using SiC MOSFETs to minimize losses. The design includes a bi-directional DC-DC stage for seamless battery integration and an LCL filter with Sendust cores for low THD. 2. Control: Powered by a dual-core STM32, the firmware manages real-time SPWM, fast-locking Digital PLL for 230V/50Hz grid-sync, and MPPT. Safety includes Anti-Islanding and GFCI Type B detection. 3. Monitoring: An ESP32 gateway provides data streaming via Wi-Fi/Bluetooth. I recommend Blynk or ThingsBoard for a professional mobile dashboard. 4. Mechanical: Layout is optimized for IP65 thermal management, ensuring the unit stays cool via an external heatsink for utility rooms or outdoor walls. Deliverables: Native KiCad/Eagle ECAD files (Schematics, Layout, Net Classes). Manufacturing files pGerbers, BOM with DigiKey/Mouser parts). Full Source Code and compiled binaries. This proposal ensures your prototype is testable, compliant-ready, and scalable. Quick question: For the 5kW peak load, are you prioritizing a passive cooling enclosure for silent indoor use, or should we optimize the PWM frequency for maximum outdoor thermal stability? Best regards, Aleksandar Makarecski Electronic Engineer BS.

@letswork92

I understand you're seeking to develop a highly efficient grid-tie inverter that integrates seamlessly with battery backup and offers remote monitoring capabilities. Your focus on achieving over 95% peak conversion efficiency while ensuring stability in grid synchronization is crucial for both indoor and outdoor applications. With over 12 years of experience, I specialize in electrical design, firmware development, and remote monitoring solutions. I can provide a comprehensive BOM with readily available components, embedded firmware for battery management and data streaming via Wi-Fi or Bluetooth, and detailed wiring diagrams. My expertise also extends to compliance standards like UL 1741 / IEEE 1547, which could enhance your project’s credibility. Additionally, I have hands-on experience with technologies such as Node.js for backend services and React.js for a user-friendly dashboard interface. As we move forward, could you clarify if you have specific preferences for the remote dashboard's design or functionality?