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I’m building out a renewable-energy platform and need a purpose-built DC to AC conversion stage. The goal is a reliable, high-efficiency inverter that can take the DC bus from my storage array and deliver a clean sine-wave output suitable for grid-tied or standalone operation. The work includes choosing an appropriate topology, running the necessary simulations, and delivering production-ready documentation. We can finalise exact voltage, power rating, and compliance targets together, but efficiency and robustness are top priorities. Deliverables I expect: • Detailed schematic with component selections. Worst case analysis of circuits • Simulation results that verify efficiency, THD and thermal performance • PCB layout files and complete BOM • Firmware or control logic outline for the modulation strategy • Brief test plan so I can replicate your bench validation Experience with inverter design for solar or wind systems, familiarity with SPWM or similar control techniques, and comfort using tools such as LTspice, PLECS, Altium or KiCad will be valuable here. If you’ve taken a converter from concept to field deployment before, let’s talk.
Project ID: 40414328
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49 freelancers are bidding on average $723 USD for this job

As a seasoned electrical engineer with particular emphasis on circuit design and electronics, I'm eager to bring my skills and experiences to bear on your renewable energy project. One of the key strengths I can bring to this task is my intimate understanding of PCB designs, especially how it relates to components selections and optimization - a factor critical to achieving the high-efficiency output you require. Having developed various robotic and industrial IoT applications, I am also well-versed in systemizing firmware and control logic outline - valuable skills for your DC-AC converter project. Moreover, my ability to strike a synergistic balance between performance, reliability, and cost-efficiency aligns perfectly with your outlined needs. I've taken concepts from inception through development stages, finishing with successful real-world deployment – an invaluable skill for this project as it requires effective translating of idea into a practical solution.
$250 USD in 1 day
7.8
7.8

As an electrical engineer with a specialization in power electronics and renewable energy, I have a strong background that aligns perfectly with your project requirements. I have extensive experience designing and implementing circuitry for inverters, AC/DC and DC/DC converters, solar inverter, wind energy systems and battery chargers like the one you need for your storage array. Moreover, I'm comfortable with design tools such as Altium or KiCad which are invaluable for creating efficient and cost-effective PCB layouts. One of my key strengths is my ability to take projects from concept to field deployment. I can provide more than just a deliverable; I strategize to handover a production-ready document along with a firmware or control logic outline. Having worked on numerous projects similar to yours, I'm conversant with the use of tools such as LTspice, PLECS for effective simulation and designing of robust circuits. Additionally, my proficiency in Matlab would be an asset in delivering simulation results that accurately predict efficiency, THD and thermal performance of your system. My skills extend beyond providing deliverables; my essence is making sure my clients are fully equipped to continue working with what we've built together. I'd be thrilled to lend my expertise and experience to your renewable energy platform project and guarantee utmost efficiency and robustness in the final delivery.
$580 USD in 12 days
7.4
7.4

Hello, I’m Shamshad, and I’m confident I can deliver a robust, high-efficiency DC-AC converter tailored to your renewables platform. I’ll start with a topology choice that balances efficiency, robustness, and easy field maintenance, followed by SPWM-based control and detailed simulations to verify efficiency, THD, and thermal performance. You’ll get a production-ready package: a detailed schematic with component selections and worst-case analysis, complete PCB layout files and BOM, a firmware or control-logic outline for the modulation strategy, and a concise bench-test plan you can reproduce. Approach: I’ll compare topologies suitable for grid-tied and standalone operation, then model the converter in LTspice/PLECS to validate efficiency, THD, and thermal behavior under worst-case conditions. I’ll document calibration steps, component tolerances, protection schemes, and thermal management to ensure reliable field performance. We’ll lock in exact voltage, power rating, and compliance targets together, prioritizing efficiency and robustness while keeping the design production-ready. What are the exact target DC bus voltage, max current, and preferred compliance standards for this inverter project? Best regards, Shamshad
$750 USD in 24 days
6.6
6.6

As a seasoned Electrical/Electronic engineer, I believe I have the expertise and hands-on experience required to design and deliver a high-efficiency DC-AC inverter for renewables. Over my 8-year career, I’ve consistently demonstrated proficiency in circuit design, PCB layout, simulation, and more – skills that are directly applicable to your project. I'm well-versed with tools such as Altium, KiCAD, and LTspice - all of which you've indicated are valuable for this project. My extensive use of these tools as well as my research skills will enable me to develop a reliable and thoroughly-tested converter that aligns seamlessly with your requirements. My commitment to excellence extends to providing comprehensive deliverables to my clients. Hence, on top of meeting your voltage, power rating, compliance targets need for the inverter, I assure you an elaborative schematic with component selections; simulation results verifying efficiency, THD and thermal performance; PCB layout files and complete BOM; Firmware or control logic outline for the modulation strategy; along with a concise test plan for your bench validation. It would be a pleasure putting my skills to work on this significant project. Please reach out so we discuss further how I can twist your ideas into reality!
$500 USD in 7 days
6.9
6.9

With a focus on innovative solutions and meticulous design, I strongly believe in my ability to provide you with the best DC-AC converter for your renewables platform. My expertise in PCB design, particularly power supply circuits like DC-DC and AC-DC conversions, aligns seamlessly with your project’s needs. Thanks to my experience in developing efficient LED drivers, I have also honed my skills in handling power mismatches and topologies – a skillset that is essential for this assignment. In terms of firmware development, I have extensive knowledge in programming microcontrollers like STM32, which is crucial for developing the control logic outlined in the project description. With proficiency in communication protocols like UART and SPI, I can ensure seamless integration to enhance the controller's performance alongside your preferences. Lastly, my RF circuit design capabilities are highly suited to the renewable energy field. Having successfully developed RF filters, splitters and transceivers tailored to specific application needs reinforces my adaptability - a quality we cannot overlook during this dynamic project. It would be a great honor to discuss your expectations further and understand how I can leverage my proficiency for your project's success.
$500 USD in 7 days
6.7
6.7

I can design a high-efficiency inverter stage from topology selection through to production-ready deliverables. I’ve worked on power electronics systems including DC-DC conversion, control design, and PCB layout with attention to efficiency, thermal behavior, and EMI. For this, I’d propose an appropriate topology (full-bridge / half-bridge depending on specs), implement SPWM or advanced modulation, and validate via simulation (LTspice/PLECS) before layout. Deliverables will include schematic + worst-case analysis, verified simulation results (efficiency, THD, thermal), PCB + BOM, and a clear control strategy with test plan. Estimated scope: $6,000 – $10,000 depending on power level and compliance requirements. Happy to align on voltage, power rating, and grid/standalone requirements to refine architecture.
$9,500 USD in 35 days
6.2
6.2

With over a decade of experience leading complex hardware projects, I am well-equipped to bring your vision of a high-efficiency DC-AC converter for renewable energy to fruition. At ZAWN Tech, we have successfully executed myriad projects in electrical engineering and PCB design. Our proficiency in circuit design, electronics, and simulation ensures that we will select the most suitable topology and perform comprehensive worst-case analysis to attain your desired outcome. Additionally, our familiarity with SPWM and other similar control techniques is a direct match with your requirements. Further leverage comes from our deep-rooted experience with tools like LTspice, PLECS, Altium, and KiCad which would ease the process of delivering production-ready documentation and PCB layout files complete with BOM. Notably, we understand the significance of robustness and efficiency in your project and our testing procedures are geared towards ensuring these qualities at each stage. The resume for Muhammad Awais
$750 USD in 7 days
6.0
6.0

HI, KINDLY READ THROUGH MY PROPOSAL I will deliver a complete, production-ready DC-to-AC inverter stage for your renewable-energy platform: high-efficiency topology (full-bridge SPWM or HERIC), clean sine-wave output for grid-tied or standalone use, full schematic with worst-case analysis, simulations (efficiency/THD/thermal), PCB layout, BOM, modulation firmware outline, and bench-test plan. MY APPROACH ✅ Phase 1: Topology selection, detailed schematic, component selection & worst-case analysis (voltage/current stress, efficiency targets). ✅ Phase 2: LTspice/PLECS simulations (efficiency, THD <3 %, thermal performance), PCB layout (Altium/KiCad), BOM and control logic (SPWM generation + islanding detection if grid-tied). ✅ Phase 3: Test plan and documentation package. RELEVANT PROJECTS • 5 kW grid-tied / off-grid solar inverter (DC bus 400 V - 230 V AC, SPWM full-bridge, HERIC topology, full simulation + PCB) DELIVERABLES • Complete schematic with worst-case analysis • Simulation results (efficiency, THD, thermal) • Production-ready PCB layout files + BOM • Firmware/control logic outline (SPWM/modulation strategy) • Bench validation test plan QUESTIONS 1. Target DC bus voltage range, output power (kW), and priority (grid-tied / standalone / both)? 2. Preferred EDA tool (Altium or KiCad) and any specific compliance (e.g. IEEE 1547, IEC 62109)? 3. When would you like Phase 1 schematic & topology review? Ready to start immediately.
$300 USD in 5 days
6.4
6.4

Hi, I am very experienced electrical and electronics engineer. I have designed many circuits and systems that incorporate DC/AC converters; including for reliable renewable energy systems. Specific renewable systems that I have designed/developed include standalone charging systems (with grid-tie operational capability), residential solar systems with local battery storage, wearable design that incorporates solar harvesting, wind farm feasibility study and design improvements, and others. I can assist you with all stages of your product design/development; including board manufacturing and testing and post development tasks like production, patent application and marketing. To ensure that we meeting your stated and desired objectives, I propose a milestone structure for the project as shown below. However, these dates can be adjusted to adhere to your desired schedule. I am able to get started immediately and hope to be able to work with you this project. Sincerely, Michael Cooke, PhD, EIT
$1,500 USD in 30 days
6.2
6.2

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!
$550 USD in 7 days
5.8
5.8

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Antenna Design (CST, HFSS) Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI MATLAB/SIMULINK Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.
$500 USD in 7 days
6.2
6.2

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal
$750 USD in 8 days
5.5
5.5

Hi, As an electrical and embedded systems engineer with extensive expertise in the design of power electronics and inverters for renewable energy systems, I can assist you in developing a high-efficiency, clean-sine-wave DC-AC conversion stage that meets your needs. With my experience designing production-ready converters, I would like to help you build a reliable inverter architecture (full-bridge, half-bridge, or multi-level depending on your specifications) by providing optimized efficiency, thermal stability, and low total harmonic distortion (THD). I have practical experience with SPWM and more advanced modulation methods, and I utilize simulation software (i.e., LTspice and PLECS) to verify performance prior to implementation in hardware. I focus on designing products that are not only functional, but also manufacturable, scalable, and robust in actual use. If necessary, I am able to assist you with sourcing components or revising designs to ensure compliance. I look forward to collaborating with you to confirm your voltage, current, power ratings, and other specifications. Best Regards.
$500 USD in 7 days
5.6
5.6

Hello, I understand you need a complete DC–AC inverter design for a renewable energy system, including topology selection, simulation, hardware design, and documentation suitable for real-world deployment. I will design a high-efficiency inverter architecture tailored to your DC bus and power requirements, focusing on clean sine-wave output, low THD, thermal stability, and robust operation for either grid-tied or standalone use. The topology selection (e.g., H-bridge with SPWM or advanced modulation strategies) will be justified based on efficiency, cost, and scalability. I will then perform detailed simulations using industry-standard tools (LTspice / PLECS or equivalent), validating efficiency curves, harmonic distortion (THD), switching behavior, and thermal performance under worst-case load conditions. Deliverables will include a complete schematic with component selection, BOM, and a production-ready PCB layout (KiCad or Altium depending on preference). I will also provide a control strategy outline (SPWM or equivalent), including firmware-level logic for modulation and protection features such as overcurrent, overvoltage, and thermal shutdown. Finally, I will include a structured test plan so you can replicate bench validation and verify performance before scaling to production. Thanks, Asif
$750 USD in 11 days
5.0
5.0

Hi, I am ready to support the design of your DC AC conversion stage for renewable energy. The design will ensure high efficiency, protection, and clean sine wave output. The designs will comply with IEC 61000 and IEEE 1547 along with other relevant power electronics and renewable energy standards. Before moving forward, do let me know: 1. Should the inverter be optimized for grid tie compliance or standalone off grid operation? 2. Do you prefer SPWM or advanced modulation for control logic? Project Deliverables 1. Schematics and simulation results 2. PCB layout files and BOM 3. Firmware/control logic Tool I Use • Altium Designer / KiCAD I have 7+ years in PCB and power electronics. Some projects include: • 100 kW Solar Inverter Stage designed SPWM based inverter • Wind Turbine Converter Board developed compact DC AC stage Warm regards, Abubakar
$676 USD in 7 days
5.1
5.1

⭐⭐⭐⭐⭐ I’ve worked on inverter stages for storage/solar systems, and I’ll be upfront—getting high efficiency + low THD + robustness right requires careful topology and control from day one. Proposed approach: 1. Topology selection • For most cases: full-bridge (H-bridge) + LC filter • Option for two-stage (DC-DC + inverter) if bus varies widely • Silicon choice: SiC or fast MOSFETs depending on power level 2. Control strategy • SPWM or SVPWM (lower THD, better utilization) • Closed-loop voltage + current control • Dead-time optimization + protection handling 3. Protection & robustness • OCP, OVP, UVLO, thermal shutdown • Gate driver isolation + proper grounding • EMI-aware layout + snubber design 4. Simulation (LTspice / PLECS) • Efficiency across load range • THD verification after LC filter • Thermal stress + worst-case analysis 5. PCB design • Tight high-current loops, laminated bus where needed • Creepage/clearance for safety • 4-layer (or more) for power integrity Deliverables: • Full schematic + worst-case analysis • Simulation files/results (efficiency, THD, thermal) • PCB (Gerbers, BOM, PnP) • Control/firmware outline (ready for MCU/DSP) • Bench test plan Quick questions: • Target power (kW range?) • DC bus voltage range? • Grid-tied compliance needed (UL/IEEE/EN)?
$500 USD in 7 days
4.5
4.5

Best DC-AC Converter Design Expert for Renewable Energy Systems! ⭐⭐⭐⭐⭐ Dear Client, The real value in this project is not just designing an inverter, but building a DC-AC conversion stage that is efficient, robust, and practical enough to move from simulation into real hardware with confidence. I can help by: ✅ selecting the right inverter topology based on your DC bus, output goals, and standalone / grid-tied direction ✅ developing the schematic, worst-case analysis, simulation flow, and modulation/control strategy around efficiency, THD, and thermal performance ✅ delivering the PCB files, BOM, and a bench test plan so the design is not only complete on paper, but ready for prototype validation This keeps the project focused on a converter that is engineered properly from the beginning instead of needing major redesign after the first build. Two quick questions: 1. Is your stronger priority standalone inverter operation first, or keeping the architecture closer to future grid-tied expansion? 2. Do you already have a rough DC bus voltage / power target in mind, or should topology selection be part of the first design phase? If you message me, I can outline the cleanest first-step workflow to lock the architecture before schematic and simulation begin. Best regards, Prat PCB Must Innovations
$500 USD in 7 days
6.5
6.5

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq
$500 USD in 7 days
4.7
4.7

Hi there, Designing a high-efficiency DC–AC inverter for renewable systems requires robust topology selection, low-THD modulation, and careful thermal/electrical optimization for reliable operation. We can develop a production-ready inverter solution with validated simulations, clean sine output, and industrial-grade design suitable for grid-tied or standalone use. To proceed accurately ✅ Target DC input range and AC output (voltage/frequency)? ✅ Grid-tied, standalone, or hybrid operation? ✅ Compliance standards required (IEC, IEEE, etc.)? Check portfolio: www.freelancer.com/u/rvwebfreelancing/mech We will be happy to address any questions and ensure a smooth project process. Ready when you are. Buildtrix Studio
$280 USD in 7 days
3.6
3.6

Dear, I have hands-on experience in renewable-energy inverter design using MATLAB/Simulink, including DC–AC converter modelling, SPWM control implementation, LC/LCL filter design, THD evaluation, and efficiency analysis. I can build and validate a purpose-built inverter model for solar, wind, or battery-storage applications, selecting a suitable topology and testing its performance under standalone and grid-tied operating conditions. For your project, I can deliver MATLAB/Simulink-based simulations showing output voltage/current waveforms, switching behavior, harmonic distortion, efficiency trends, and thermal or loss estimates. I can also provide the control logic outline, component selection rationale, schematic guidance, BOM, PCB-ready design notes, and a practical test plan so the simulated design can be translated into hardware validation.
$250 USD in 5 days
3.7
3.7

San Jose, United States
Member since May 2, 2026
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