1kw sinewave inverter design jobs

I've got a commercial warehouse that requires an efficient, robust photovoltaic system designed to satisfy high levels of energy consumption, more than 5000 kWh per month. I am seeking an experienced professional with: - In-depth knowledge of photovoltaic system design, especially for commercial use. - Demonstrated expertise in designing systems for high energy consumption environments. - Proven experience in integrating such systems in warehouse environments. The selected candidate should excel at: - Evaluating the energy requirements of the warehouse. - Suggesting and utilizing top-notch equipment to ensure a well-functioning, high-performance system. - Instituting measures for peak energy consumption periods, and providing a system that ensures continuous power supply wit...

I am looking for a freelancer who can provide a detailed quotation analysis as well as perform the operation and maintenance tasks for my 55MW ground mounted solar power plant. The primary foc...freelancer who can provide a detailed quotation analysis as well as perform the operation and maintenance tasks for my 55MW ground mounted solar power plant. The primary focus of this role is to perform routine maintenance and inspections on the solar power plant. Performance optimization is also a key aspect of the role. Specifically, I am interested in improving the solar panel efficiency, inverter efficiency, and overall system efficiency. Ideal candidates for this role should have a strong background in solar power plant operation and maintenance and experience in performance opt...

...a blown resistor, on my inverter. Its code is unreadable. I need to find someone who has the exact same version of this inverter, with experience in handling this kind of devices, to locate the original working resistor on the board, and take a photo of it, with a visible full code. The version of the inverter must be an exact match. It must be the Xian Ke Zhi, 48V, 5000W, and the sticker, and board layout, must be the same has the provided photos. This version does not seem to be manufactured anymore. There is a new version, that has a different sticker (blue instead of orange, and other differences), but the board layout is different, and it doesn't have the same resistor, in the same place. Priority will be given for someone who actually has the same i...

As a developer, I'm seeking expertise in crafting efficient C# code to interact with a JKBMS (inverter BMS). My needs are twofold. • JKBMS Read Operations: Your paramount task will be to read specific battery data from the JKBMS. The required data includes the battery's voltage, temperature, and State of Charge (SOC). • Integration with Existing Program: Once the data retrieval is done and example fully works. is to help me integrate it with my existing program. An accomplished C# programmer with prior experience in system integrations, particularly working with BMS systems like JKBMS, would be the most suitable for this task.

I require an experienced PLC programmer to look into my multi-level parking system. With a focus on: - Review of the existing PLC program - Troubleshooting potential issues using TeamViewer Currently, the system is experiencing errors during the parking or retrieval process which needs rectification. We changed the inverter to the parking system to Yaskawa. The PLC program may need to be reviewed as the automated process is no longer working. No error messages. Just not working as before The ideal freelancer is one who has: - Excellent understanding and troubleshooting skills for multi-level parking systems - Ability to successfully detect and resolve system errors - Prior experience with automated parking systems is preferred.

The project is to create Inverter automation to start export, stop export and charge the battery automatically using a microcontroller that can subscribe to the server to get spot prices to run the automation. Objectives: 1. Modbus read and write 2. ESP32 Webserver 3. Spot price subscribe 4. Calculation / rules 5. MQTT Service (Server) 6. Price Service (Server) 7. Device Dashboard (Server) Project scope and system architecture are referred to the project brief documentation "Inverter Automation Project "

I need assistance in simplifying the library management of a Platformio project. I need the openDTU Project to be simplified so that all the network and mqtt stuff is removed. I want just the inverter control functionality in that library so that im able to control it with the ESP32 without internet connection.

I need someone who can simplify a c++ project for me. The project is the openDTU repository on GitHub () . I want just the inverter control functionality without all the web and cloud connection stuff. I want a library where I can add a device and control it on a ESP32 directly without connecting it to the internet.

I am looking for a proficient C++ develo...who can simplify the openDTU projekt so that I will have only the inverter control functionality without all the other protocols. I want to be able to control the inverter with the ESP32 directly. over the nrf24l01+ module. The Projekt is found at: The OpenDTU is a DTU which enables control of multiple different solar inverters. The Projekt uses a web app to add/delete inverters and show or control the values which the solar panels are producing. I want to use the inverter control functionality inside of my own project so that I need library where I have the same features than in the web app but controled in my own code. So the task is to simplify the openDTU project for just the inverter control functionality.

I'm looking for an experienced MATLAB-Simulink professional to help me simulate DC arc faults in PV system. Key Project Details: - The primary purpose of the PV system is power generation. - I n...Project Details: - The primary purpose of the PV system is power generation. - I need the simulation to provide details on basic electrical parameters and arc dynamics. - I need the simulation using different arc models (Cassie, Mayr, Habedank, Kema, Paukert, Modified Paukert, Heuristic). - The Pv system (20 kW) should be connected to the grid. - The Pv system should have a dc-dc converter and inverter. The ideal freelancer for this project should have: - Strong expertise in MATLAB - Simulink - Experience with simulating electrical systems - Familiarity with photovoltaic systems ...

HELLO :) We are already running on Espcode, that can pull/change modbus on solar inverters(mostly growatt) We need to expand this code, and make it able to take energy (Spot prices) into relation. We use ESP32 1. Be better grapchal looking (Web interface) 2. Access to the energy Prices (Live spot prices) 3. Be able to choose between DK1 or DK2 (This is price regions in denmark) (Also we need to expand to other countries later on) 4. Add tax/vat/tarifs 5. Code needs to be stand alone, meaning it should be able to run without home assistant, but also should be compatible with home assistant. 5. Allow Simple automations, like: Stop exporting electricity if spot price falls below X. or like Start charing battery if prices go lower than X Potentially we i will need you to work with us on ...

I am in need of a professional who has expertise in solar panel system that will be generating electricity for my home. Key requirements: - Proven experience with Hybrid Solar Inverter - In-depth knowledge of residential solar panel setups - Sufficient understanding of electric systems related to residential properties - Preferably certified in solar installation (but not compulsory) - Certified electrician The ideal candidate will guide me through the complete process, from equipment selection (if not provided) to full implementation, ensuring the system runs at maximum efficiency. Prior experience in similar projects is highly appreciated. I have already got the G99 application from DNO.

As a solar energy enthusiast working with a Windows PC, I am seeking a proficient software programmer to write a program for USB to RS-485 communication. This program will retrieve real-time operating conditions from my solar inverter and present it on a visual dashboard - the program also needs to be able to change key operating parameters. Key Requirements: - Development of a program that facilitates communication between PC and solar inverter over USB to RS-485 - Enable the retrieval of real-time operating conditions data from the solar inverter - Create a clear, easy-to-use visual dashboard to display this data in real-time Ideal Skills and Experience: - Proficiency in software programming and systems integration - Previous experience with USB to RS-485 communica...

...Electrical Engineers with a specialisation in solar battery power systems (eg: AC/DC Inverter, LifePo4 storage). This project centres around the design, planning, and building of power generation/ storage systems inside trolley/ tool boxes. Skills and experience you should ideally possess: - Expertise in designing and developing portable energy systems - Understanding of the latest power generation equiment and optimisation - Experience on energy management, storage and power electronic technologies. Project deliverables include schematic designs, system layouts, and a comprehensive implementation plan for this renewable energy-based portable power station unit. If you have the necessary skills and experience to design and make this system, please feel free to...

Hello There! My name is Cosimo ...on Faraday’s law and on the induction equation “f.e.m.= magnetic flux/time” so you could make the aluminum part jump higher by giving the electromagnet more current (increasing the magnetic flux). But I would like to see if the formula works also in the other way: so by keeping the same current and supplying a higher frequency (so by reducing time in the induction equation) So I would need an inverter that can supply a higher frequency current (higher than 50Hz) to the electromagnet and keeping the 220V from the home power socket and see if the piece of aluminum actually jumps higher. I’m sorry if I wasn’t able to explain good enough for you to understand, so I’ll be more than happy to answer any question or ...

Hello There! My name is Cosimo an...Faraday’s law and on the induction equation “f.e.m.= magnetic flux/time” so you could make the aluminum part jump higher by giving the electromagnet more current (increasing the magnetic flux). But I would like to see if the formula works also in the other way: so by keeping the same current and supplying a higher frequency (so by reducing time in the induction equation) So I would need an inverter that can supply a higher frequency current (higher than 50Hz) to the electromagnet and keeping the 220V from the home power socket and see if the piece of aluminum actually jumps higher. I’m sorry if I wasn’t able to explain good enough for you to understand, so I’ll be more than happy to answer any question or ...

I'm looking for expert assistance with the electrical plan/schematic setup of a medium-sized swimming pool 30m2. This will involve the installation of pool lights, a pump system, a heating system and spare wall plugs for potential future use. Here's what I need: Switch/electricL box, containing circuit breakers and timer to control: -Pool lights - pump system - full inverter heat pump system - 4 spare wall plugs for future utilization - salt water solinator. The timer should control all the above, ecluding the pool lights

I'm searching for a proficient 3D designe...for a proficient 3D designer with experience in Fusion 360 to create a high-tech-inspired inverter roller speargun with anatomic handle. KEY REQUIREMENTS: - Create a high-quality 3D model based on the approximate dimensions I provide. - Emulate a high-tech style in the design. This should look cutting-edge and sophisticated. - Reflect wood as the primary material in the model to achieve a natural, robust and refined aesthetic. I will provide specific design guidance and feedback throughout the project to ensure it aligns with my vision. The ideal freelancer for this job has expertise in Fusion 360, 3D modeling for physical production, and an eye for high-tech design. A background in speargun design or ...

I require a seasoned motion graphics artist to create a product demo video. The primary objective? It's the launch of a revolutionary product - let's make an explosive entry. The imagery? Futuristic. Think along the lines of cutting-edge tech, holographic displays, sleek designs. Ideal experience and skills: - Motion graphics creation - Futuristic design aesthetic - Product demo videos and product launches - Ability to translate concepts into visually stunning animations Hit me up if you're keen on shaping the future one frame at a time.

...Previous experience designing real-time monitoring systems is also a plus. System standard: AC Line (110Vac or 220Vac) Normal Operation, Load is connected to AC Line in case of power loss, it will be supplier by li -ion battery Li-ion battery always charged by AC line (need to use BMS) Li-ion battery 12Vdc (18650 x 9pc) or more (expandable) Inverter input 12Vdc Inverter output pure sine wave 220Vac Inverter power: 1500W ** Need to design inverter!! not use from market ones ** Load: ac equipaments with high peak current : Load = 1/4HP ou 1/2HP (i.e: Refrigerator / Freezer / Automatic Gate) Need to have display output to show status of battery charge and input status (battery or AC) Need to have a button to manual switch from ac to battery Need t...

...extensive experience and knowledge in electronics engineering, specifically inverter design to assist me in creating a high-frequency inverter. The input of this inverter will be 120V 50Hz, and it should output the same voltage but at a frequency of 85kHz. Key Requirements: - Purpose: The primary function of this inverter is frequency control. - Load: The inverter will be connected to a resistive load. - Efficiency: The design should aim for over 90% efficiency. Freelancers with a proven track record in high efficiency inverter designs are highly preferred. This project will require a clear understanding of power electronics principles and the ability to apply that knowledge to create a practical and efficient design s...

I'm seeking a skilled engineer to design a generator set powered by a 40 hp 1500 max rpm tractor's PTO. The design must be versatile, providing both DC for SMAW welding (9-48V, 10-500A) and AC power (15KW, 120 or 240V) for appliances. Required Features: - Utilization of an auto alternator or generator. - 12V or 24V battery system. - Digital or analog inverter - Some form of rheostat control for controlling welding amperage - Considerations for grounding and circuit breakers. - Peak performance at optimal rpms and comprehensive voltage regulation. - Off the shelf components highly desirable, so equipment specifications are more important than exact sourcing - Other than specifications for safe spacing of components, mechanical design is not required. ...

...Azure IoT to manage my solar inverter system. Key Requirements: - Build an ESP32 system to gather data from a solar inverter via Modbus through RS485 protocol, including energy production data, voltage levels (0-1000V), current levels (0-100A), solar production, and all further available settings. - Implement the functionality to modify these inverter settings as required. - Develop a mechanism that enables seamless data transfer from the ESP32 system to Microsoft Azure IoT. Ideal Skills and Experience: - Comprehensive knowledge and experience working with ESP32 and Azure IoT. - Expertise in Modbus communication over RS485. - Understanding of solar inverter systems and data protocols. - Proven experience in effective problem-solving and innovative solutio...

I'm looking for a professional in solar panel installations to work on a comprehensive project for a residential house. The project will involve the installation of 8 - 10 panels on both the house and in the backyard. I already purchased 8-10, 365-watt, mono panels, with an EG4 6000 XP 120/240 inverter, and two EG4 48v LL-S batteries. I'm looking to power a 3.5 ton mini-split with off-grid solar. I'm not looking to power the entire home at this time. Key Requirements: - Determine the best positioning for the panels to optimise sunlight and power output. - Advise on and install necessary infrastructure. I am not currently aware of any existing solar panel infrastructure in my home. - Recommendations needed: In terms of brands or models, I have no specific prefer...

I am looking to have a compact 220v inverter designed to power electronic devices during my travels. The ideal candidate for this job will have a deep understanding of electronic product design and development, especially in relation to power inverters. Key Requirements: - Compact Size: The inverter needs to be compact for easy transport during travels, yet capable of delivering the required power for various electronic devices. - Functionality: While the exact devices have yet to be specified, the inverter should be able to handle common electronic devices such as smartphones, laptops, and similar devices. Ideal Skills and Experience: - Extensive experience in electronic product design and development. - Proven portfolio of power inverter ...

Modbus, C++ Specialist, webserver, ESP32, Home Assistant, Hello :) We are looking for specialist who can develop system that can pull data from solar moss. inverter to esp32 and then show on web address. with contols and all working. will use a home assistant integration to handle the process.

...Home Assistant. Our goal is to tailor a customized package that facilitates easy deployment on a Raspberry Pi, enhancing our customers' solar system experience with real-time insights. Description: Integrate real-time energy production data, including power outputs from solar panels, and comprehensive energy consumption information (Grid, PV, Battery, and Consumption). Ability to configure all inverter settings via Home Assistant Ensure seamless integration of Solarman for a holistic view of solar system performance in real-time. Provide continuous updates and optimizations to ensure data display every second, delivering a truly immersive real-time experience. Requirements: Proven experience in Solarman integration and Home Assistant customization. Proficiency in Raspberr...

I am searching for a programmer specialized with STM32 to develop an inverter. Here are the core competencies you need for the project: - Knowledge of basic communication protocols like UART, SPI, I2C. - Ability to handle sensor integration. - STM32 programming experience, preferred language not specified. - In-depth knowledge in developing off-grid inverters would be a great plus. For this task, you will focus mainly on creating the inverter. The work may require employing a variety of communication protocols and integrating them with various sensors. Please confirm if you have these capabilities before bidding on the project.

I'm seeking a proficient AutoCAD freelancer to help me design a 5-10 meter pole which incorporates solar plates, an inverter, battery, camera, and other components. - The work involves creating a comprehensive and detailed CAD design of the structure. - The freelancer should ideally have a background in mechanical and electrical design, as well as significant experience with AutoCAD. - Your final deliverable will be a CAD drawing representing the layout and specifications of the pole and its add-on features. This role is well-suited to individuals who excel in detailed, precise work and possess a solid understanding of mechanical design and back office technologies.

I am seeking an experienced electrical engineer or talented drafter to make some alterations to an existing wiring diagram. The wiring diagram is for a control panel for a speed door, that we are having to add a dual channel emergency stop system into. We would therefore need the wiring diagram altering to show the new e-stop & e-stop relay as well as a power inverter to get from 400 to 24v. Parts being added are all of the shelf products, can send the links over to show products intended to be used.

We are looking for an Electrical Engineer with expertise in Automotive electrical work and testing equipment. We are looking to develop some equipment and need a highly qualified engineer to assist us. I am attaching some photos of the a/c compressor we are working on. We are looking for a EDT in High voltage brushless inverter 20 amps 3 poles

I have a MOES solar power transfer switch. This device seamlessly switches power from inverter power to mains power and vice versa. The problem with this device is that it switches by detecting the battery voltage and not the actual remaining power in the battery bank. This is a problem when using high inductive loads such as the electric kettle or washing machine etc as this pulls the voltage down temporarily while the heating element is on and causes the the solar switch to switch back to grid power because it has dropped below the voltage threshold. I have a Victron smart shunt that accurately measures the real time remaining power in the battery. I’m looking for a way to use the smart shunt information and somehow bridge that gap between the smart shunt and the switching u...

I'm seeking a talented electronics engineer to design a high-frequency inverter circuit. - *Project Purpose*: Convert 12V DC to 230V AC for powering small appliances with 12Amps Solar Charging Feature with necessary LED indicators. - *Specifications*: - Output Power: Manage loads from 100W to 500W - Safety Features: Must include overload and short circuit protection *Necessary Skills*: - Experience in Power Electronics - Circuit Design Proficiency - Familiarity with PCB Layout *Ideal Candidate*: - Someone who has successfully designed inverters and can provide examples. Please submit your proposal with a plan of action and your experience with similar projects.

I'm in need of expert assistance for testing, or establishing a test set up for IGBTs and MOSFETs. The primary focus of this project is to drive IGBT and MOSFET inverter modules (half bridge) at different power and switching frequencies and monitor key parameters during testing. I would also like to measure temperature on the top of the device (with the top cover open) via an IR camera. - Required measurements/ key parameters: Input variables such as voltage, current, switching frequencies, and any other parameters Temperature via the IR camera and a thermocouple in the coolant line Coolant flow rate I currently lack clarity on the equipment and setup required for such testing. Recommendations or guidance on necessary items, such as testing kit, power supply, any other equ...

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I have a home battery 10kw with a fault message - the chinese vendor says a new battery management system board may be required or they say i need a multimeter to check inverter battery input port to check for fault - IF YOU HAVE EXPERIENCE IN THIS AREA MY LOCATION IS NEAR HEATHROW /SURREY

...hire a knowledgeable and skilled freelancer who can create a solar design tutor. The aim of the project is to cater specifically to an intermediate level, unravelling the intricacies of designing 100KW and above solar systems. Major Deliverables: - Teach how to design solar systems effectively - Provide comprehensive information on PV, battery, and inverter sizing - Tutor on how to proficiently use different solar design software Required Features: - Step-by-step design tutorials to aid understanding and ensure a detailed grasp of concepts - Interactive simulations for practical hands-on experience - Calculation tools for PV, battery, and inverter sizing to create proficient designs - Video tutorials on using solar design software ...

I'm looking for an experienced electrical engineer to create a schematic for a 10000w 12vdc to 120vac inverter, with a precise list of materials needed. A key requirement is that the output waveform must be a pure sine wave. This inverter will be used primarily for operating home appliances. Including the following safety features in the design is crucial: - Overload Protection - Short Circuit Protection - Overheat Protection Your expertise in designing power inverters, knowledge of component sourcing, and ability to consider safety and efficiency in schematics will make you the ideal candidate for this project.

Hi! I just need a very simple CAD drawing. I was wondering if you can help me. I'm designing a small wind turbine for a home, and need a diagram showing the wind turbine producing DC electricity which is connected to an inverter which converts it to AC electricity and then is connected to the mains of a household. Just generic diagrams of each would be perfect

...interfacing with three or more PV inverters, and the key functionality needed for the software includes: - Communication: The software should be capable of communicating with multiple PV inverters. - Changing power should be realised acc. to hourly energy prices, that should be read using JSON queries (from external server). - Changing Power: Crucially, we have to adjust the power output of each PV inverter according to our specifications. The perfect freelancers for this project bring: - Experience in PLC devices selection - Proficiency in software development with specific experience in JSON, modbus RTU and Modbus TCP interfacing. - Specific understanding or background in power systems, particularly PV inverters control. Given the highly specific requirements of this proj...

I'm seeking a skilled designer and developer proficient in AutoCAD/ANSYS technology, with an understanding of thermodynamics, to create an optimized heat sink for my electric vehicle's motor inverter. The ideal mission is twofold: 1. **Thermal Management**: The newly developed design should effectively decrease the risk of thermal overloading, preventing damage and maintaining the hardware longevity. 2. **Increased Efficiency**: By managing thermal output, the design should inherently lead to increased efficiency and enhanced performance. As for the material selection, I have no specific preference. I welcome the expertise of the selected professional to guide the appropriate choice, weighing up benefits and disadvantages of materials like aluminum, copper...

I've developed a groundbreaking product within the field of Technology and Energy. Now, I'm on the venture to take the next big step, gearing up for production and Development of the Inverter to Handel all the power. I need a proficient grant writer who can help me secure the critical funding for my product's manufacturing. • GRANT PURPOSE: The grant money will be specifically deployed for manufacturing and production of the product. Hence, the proposal must compellingly demonstrate the production readiness and the potential market impact of the product. • PRODUCT STAGE: The product is fully developed and tested. The product is also already Patented! All supporting documents, test result, and relevant details will be provided for fine understanding. &bull...

...freelancer who can design and create a 48V, 1.5KW BLDC Drive Chiller for an ice battery project. The deliverable will be the actual prototype shipped to Hong Kong for testing. Note this compressor must be DC electric drive. We want no submissions incorporating alternating current (AC) power. 48V 1.5 KW BLDC COMPRESSOR for ice battery 1. Prototype Specification: Type: Scroll Compressor Power Rating: 1.5KW Voltage: 48V (DC) Motor Type: Brushless DC (BLDC) Coolant Discharge Temperature: -9°C, specifically designed for integration with an ice battery system 2. Operational Requirements for Prototype: Variable Speed: Capable of efficient operation at variable speeds, particularly under solar power varying conditions. Inverter Compatibility: Should be compat...

I'm seeking an experienced Electrical/Electronics engineer specializing in power systems and inverters that has code that uses SPWM to generate 3 phase sine waves for Inverter purposes. You must have this code already and it must run on ESP 32 module.

I need an animated diagram of how a PV solar system works that i can include in an owners manual. the diagram is just a basic over view. i need an imagine of the sun, a house with solar panels on the roof, an inverter, a switchboard, some powerlines and a load(a fridge, oven, power point etc any of these will be fine). the diagram needs to show that the sun shines onto the solar panels, the DC electricity runs down to the inverter where it is changed into AC electricity. from the inverter in runs to the switchboard where the electricity can be consumed by the load. the electricity that is left over that is not consumed by the load then flows back to the powerlines

Project Description: 3.3kva SMA Ongrid Inverter for Solar Power System Installation Skills and Experience: - Experience in installing SMA ongrid inverters for solar power systems - Knowledge of electrical wiring and connections for grid-tied power systems Project Details: - The client is seeking a freelancer who specializes in installing ongrid inverters for solar power systems. - The preferred brand for the ongrid inverter is SMA. - The purpose of the ongrid inverter is to be used in a solar power system. - The client requires installation services for the ongrid inverter. - The freelancer should have experience in installing SMA ongrid inverters and be knowledgeable in electrical wiring and connections for grid-tied power systems. Please note that further d...

I am looking for a freelancer who can hel...freelancer who can help me with my project to install a 3.3kva ongrid inverter. Preferred Brand: - I am open to suggestions for the preferred brand of the ongrid inverter, with options including ABB, SMA, and Delta. Output Power Capacity: - I require an output power capacity of 3-4kW for the ongrid inverter. Additional Features: - One of the additional features I require in the inverter is energy storage. Ideal Skills and Experience: - Experience in installing and configuring ongrid inverters - Familiarity with the preferred brands (ABB, SMA, Delta) - Knowledge of energy storage systems and their integration with ongrid inverters Please provide me with your expertise and recommendations for the best ongrid ...

I'm in need of an experienced professional who can efficiently make a wired connection between my Remote Monitor Unit (RMU) or IoT device and an inverter. Essential details include: - Connection type: The successful applicant will need to make a wired connection, not wireless. - Equipment: You will need to bring and use your own laptop for debugging purposes. - Communication Protocol: My RMU supports RS485 communication. - Timeframe: All work needs to be completed within one day. Ideal skills and experience for this role include those well-versed in the use of RS485 converters. Familiarity with debugging and making secure, wired IoT device connections is a must. Knowledge in remote monitoring units is a plus. Please note this is a single-day job.

<Overview> Please collect product information on transaxles for electric vehicles including cooling systems that have or will have the technologies described in the “Technology Description” section below. <Technology Description> This technology is related to a cooling system used for cooling components of a transaxle of electric vehicle. The transaxle includes an inverter, motor and gears. The inverter is cooled by coolant (LLC, etc.), and the motor is cooled by oil. With this technology, a coolant chamber for storing coolant and an oil chamber for storing oil are placed adjacent to each other with a single wall interposed therebetween. Thus, it is possible to cool oil through the wall with coolant flowing through the coolant chamber. Please search ...

Off grid solar system with 12 panels 12 400 w dna bifacial panels 2 inverters 20kw battery I need a design that shows 3 panels connected to one inverter and battery and the other 9 panels connected to the second inverter and battery .