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I’m working on an electric-vehicle project that needs a robust, high-efficiency DC-DC chopper built around an IGBT module. The converter must operate as a buck stage and meet the following ratings: • DC input: 360 V, 300 A • DC output: 0 – 170 V, up to 650 A • Continuous power: 110 kW Thermal performance, switching strategy, and layout all need to be optimised for maximum efficiency, as that is the key driver for this build. Compactness and cost matter, but only insofar as they don’t compromise efficiency targets or reliability in an EV environment. Deliverables I need from you • Complete electrical schematic with IGBT selection, gate-driver circuitry, magnetics, snubbers, protection and measurement points • Detailed design calculations that justify component ratings and predict losses • Simulation files (PSpice, LTspice, MATLAB/Simulink or similar) showing steady-state and transient behaviour across the full 0-170 V range • Preliminary thermal model and heatsink sizing for the chosen switching frequency • Bill of materials with manufacturer part numbers and availability notes • PCB layout guidelines or Gerber files if layout is included • Short design report summarising efficiency, expected ripple, and protection strategy (over-current, over-temperature, soft-start, etc.) Acceptance criteria 1. Simulated efficiency ≥ 94 % at nominal load 2. Output ripple within ±2 % of set voltage across the usable range 3. Component junction temperatures < 125 °C at 40 °C ambient with the proposed cooling solution 4. All protection features trigger within safe limits without nuisance tripping If you have previous EV powertrain or high-current converter experience, please highlight it when you reply. I’m ready to move quickly once I see a solid technical approach and timeline.
Project ID: 40725104
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30 freelancers are bidding on average ₹66,212 INR for this job

I'm Sardar Hasnain, an accomplished Electrical Engineer with a Master's in Embedded Systems. My broad range of expertise encompasses all key areas relevant to your project, especially in the field of power electronics and high-current converter design. For the past 5 years, I've been deeply involved in firmware development, PCB design, and product engineering for powertrain systems, including embedded charging solutions for various EVs. Indeed, I have walked the walk when it comes to developing efficient and reliable power systems that are key to sustaining performance in demanding environments like EVs. In terms of technical approach, I propose a meticulous, multi-step strategy that starts with comprehensive electrical schematic design driven by stringent efficiency and cooling-performance estimations. This would be backed by state-of-the-art simulations on platforms like PSpice and MATLAB/Simulink to ensure steady-state and transient behavior optimally meet your requirements. My holistic deliverables promise detailed calculations justifying component ratings alongside a preliminary thermal model with well-sized heatsinks fitting your chosen switching frequency.
₹90,000 INR in 30 days
8.3
8.3

Hello, I trust you're doing well. I am well experienced in machine learning algorithms, with nearly a decade of hands-on practice. My expertise lies in developing various artificial intelligence algorithms, including the one you require, using Python, and similar tools. I have worked with pytorch, and tensorflow to develop DL models, .I hold a doctorate from Tohoku University and have a number of publications in the same subject. My portfolio, which showcases my past work, is available for your review. Your project piqued my interest, and I would be delighted to be part of it. Let's connect to discuss in detail. Warm regards. please check my portfolio link: https://www.freelancer.com/u/sajjadtaghvaeifr
₹56,250 INR in 7 days
7.8
7.8

Dear Client, I hope this message finds you well. Drawing from my extensive background in Electrical Engineering and Electronics, I confidently offer to meet your project requirements for designing your 110 kW IGBT Buck Converter. My strong suit in skills like Digital Motor Control, Power Electronics, Electronic Design and MATLAB simulation equip me aptly for this project. With significant proficiency in DC-DC converters, I've completed similar high-current projects which facilitate me to adhere to demanding specifications such as yours. Having worked on EV powertrain projects previously, I perfectly understand the criticality and emphasis on efficiency, reliability and compactness weighing against cost - levels of precision that distinguish an qed&perpetrative design from mere functionality. Additionally, my meticulous approach ensures comprehensive documentation of every stage; design calculations to thermal models which will give temperature estimates at different ambient temperatures. My promises: an efficiency≥ 94% at nominal load with simulated output ripples < ±2% of set voltage across usable range. Robust protection strategies censured are ensured without having any nuisance tripping. I'm excited to commence this project with you! Anticipating a fruitful collaboration where quality meets punctuality. Please let me know if we can discuss any aspect further. Warm Regards, Metin
₹75,000 INR in 15 days
7.5
7.5

As a highly experienced professional in both electrical engineering and PCB design, I believe I am the ideal candidate for your high-efficiency DC-DC chopper project. Over the past 8 years, I have worked on numerous projects similar to yours, crafting robust and efficient designs with paramount precision. What sets me apart is my profound understanding of semiconductor devices such as IGBT modules and their selection to suit specific project requirements. Drawing from my expertise, I can deliver a comprehensive electrical schematic optimally designed for your EV application. With my significant experience using simulation tools like LTspice and MATLAB/Simulink, I assure you that my designs will be thoroughly validated to withstand transient behaviors and remain efficient across the full 0-170V range. My proficiency also extends to designing thermal models ensuring your chosen switching frequency operates within acceptable temperature limits. My track record demonstrates my ability to meet stringent specifications while remaining within budget constraints. Your project’s emphasis on efficiency aligns perfectly with my core values as an engineer; the efficiency, expected output ripple, and protection strategy summaries of my proposed design will provide you with not only detail but also practical solutions. Together, we can create an advanced DC-DC chopper tailored precisely to your EV needs.
₹56,250 INR in 7 days
7.0
7.0

Hi, I’m a mechanical/electronics engineer experienced in power electronics, PCB design, thermal analysis, embedded control and engineering simulation. I can develop the engineering design for your 360 V / 300 A to 0–170 V / 650 A buck converter with efficiency and reliability as the primary objectives. My approach will cover: • IGBT/module selection and loss comparison • Gate-driver, isolation and protection architecture • Switching-frequency optimization • Inductor/magnetics sizing and current ripple analysis • Snubber, over-current and over-voltage protection • Current/voltage measurement • Conduction + switching loss calculations • Thermal model and heatsink/cooling sizing • LTspice/PSpice or MATLAB/Simulink simulation • Full-load and transient analysis across 0–170 V • EV-oriented creepage, clearance, grounding and layout considerations • BOM with manufacturer part numbers I will specifically design against your acceptance criteria: ≥94% simulated efficiency, ±2% output ripple, junction temperatures below 125°C at 40°C ambient, and reliable protection without nuisance triggering. I can provide the complete schematic, simulation files, calculations, BOM and engineering report, with PCB/Gerber work as an optional scope. Best regards,
₹300,000 INR in 25 days
6.7
6.7

As a seasoned Electrical Engineer, my specialization in creating smart embedded systems and IoT devices make me a perfect fit for your electric-vehicle project. Over the years, I have built a reputation for delivering top-notch solutions while adhering to strict performance requirements and ensuring optimum efficiency. My demonstrated expertise in designing high-current converters and previous work on EV powertrains gives me an edge when tackling your project. Not only do I have significant experience handling all the deliverables you require for your IGBT Buck Converter design including complete electrical schematics, detailed design calculations, simulations files, thermal models and heatsink sizing, BOM with availability notes, PCB layout guidelines or Gerber files along with a comprehensive design report. I am fully aware of how crucial features like ripple control, protection mechanisms and cooling solutions are for an EV environment. Rest assured that my technical approach will meet your exact specifications. Reliability is paramount in EV technology a reality I deeply understand. Recognized for my ability to deliver scalable designs that perform consistently even under demanding circumstances, you can count on my commitment to ensure the smooth functioning of your electric-vehicle system.
₹50,000 INR in 4 days
6.8
6.8

Hello my name is Collins; I am ready to engineer your 110 kW IGBT-based DC-DC buck converter (360 V} input to 0 -170 V} / 650 A output), optimizing for high efficiency (>96\% target) and EV-grade reliability. Engineering Approach & Deliverables Component Selection & Schematics: Full schematic incorporating low- V power modules (e.g., Infineon PrimePACK/EconoDUAL), isolated desaturation-protected gate drivers, custom high-current output inductors, and active snubber circuits. Modeling & Simulation: Complete LTspice / MATLAB Simulink files verifying steady-state ripple, transient response, and soft-start/protection logic (OCP, OTP, OVP).Thermal Architecture: Loss distribution calculations (conduction vs. switching losses) paired with a 3D thermal model for liquid/forced-air heatsink sizing, keeping junction temperatures well below 125 ambient. BOM & Layout: Full BOM with active manufacturer part numbers, stock availability, and high-current PCB layout guidelines (EMI shielding, parasitic inductance minimization, and power busbar layout).Past ExperienceI have designed 100 kW power electronics for heavy EV powertrains, including traction inverters and high-power DC-DC stages.I can deliver the initial simulation, thermal model, and preliminary schematic within 10–12 days. Let’s connect to begin!
₹56,250 INR in 7 days
6.1
6.1

With specialization in RF and electronics design, I offer you a unique blend of skills that can be of great value for your electric-vehicle project. My deep understanding of power supply and filtering, combined with my experience in high-speed and mixed-signal PCB design, make me well-equipped to handle the challenges involved in building a robust, high-efficiency DC-DC chopper. I understand that efficiency is a key driver for your project, and this is where my skills in optimization come into play. Whether it's impedance control for minimizing energy losses or grounding strategies for optimizing overall performance, I have consistently prioritized maximum efficiency without compromising on reliability. In addition to my technical expertise, I promise you clear and effective communication throughout the project. I'll ensure you're updated every step of the way so we keep things moving at the desired pace. Lastly, if given this opportunity, I assure you my total commitment to meet all deliverables and acceptance criteria with zero compromise on quality. Let's get started on creating an outstanding product together!
₹55,555 INR in 7 days
5.8
5.8

Hello sir I lead an electrical engineering design team with extensive experience in high-power EV powertrains, industrial motor drives, and high-current DC-DC converter architectures. Operating at 360 VDC input, 170 VDC output, 650 A continuous output current, and 110 kW rating requires a low-stray-inductance, highly optimized power stage where conduction losses dominate. Below is our technical strategy, component selection rationale, thermal management approach, and project roadmap for delivering a complete design package for your 110 kW buck converter.1. High-Current Buck Converter Architecture Strategy At 650 A continuous output, a single-phase buck inductor and IGBT module would suffer extreme thermal stress, prohibitive magnetics size, and high current ripple ($I_{RMS}$). We recommend a 4-phase interleaved buck topology: ┌──► Phase 1 (162.5 A) ──► L1 ──┐ ├──► Phase 2 (162.5 A) ──► L2 ──┼──► Output Capacitor Bank (C_OUT) ──► Load (170V, 650A) 360 VDC Input ────┼──► Phase 3 (162.5 A) ──► L3 ──┤ └──► Phase 4 (162.5 A) ──► L4 ──┘ Eslam
₹60,000 INR in 3 days
5.6
5.6

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
₹70,050 INR in 7 days
5.3
5.3

As an Electronics expert, I would be the perfect fit for your 110 kW IGBT Buck Converter Design project. With ample experience in electronics design, robust calculation abilities, and high proficiency in MATLAB and simulation tools, I can provide you with a comprehensive technical solution. In addition to my technical expertise, I'm well-versed in the importance of thermal performance, efficient switching strategies, and layouts - all crucial elements for your project. In terms of deliverables, I guarantee you a detailed schematic design that considers every important aspect from IGBT selection to gate-driver circuitry to protection and measurement points. Furthermore, my proficiency in simulation tools like PSpice and LTSpice will ensure comprehensive insights into the steady-state and transient behaviors of your converter under various constraints. My proposal extends beyond just an efficient design; it focuses on ensuring long-term reliability even within the challenging EV environment. Fulfilling the acceptance criteria is paramount! By leveraging my experience & skill set along with my software knowledge, we can make this happen! Let's work together to create a highly efficient converter that not only meets but exceeds your project expectations.
₹40,000 INR in 4 days
5.2
5.2

Hi there, I am ready to design a robust, high-efficiency IGBT-based buck converter for your electric-vehicle project, covering IGBT selection, gate-driver circuitry, magnetics, snubbers, protection and measurement, loss calculations, simulation, thermal modelling, and PCB layout, following IEC 61800, IEC 60664, IPC-2221, and JEDEC standards for a high-efficiency, thermally optimised, and EV-reliable converter. Project Deliverables: Complete electrical schematic Detailed design calculations Simulation files Preliminary thermal model and heatsink sizing Bill of materials PCB layout guidelines Gerber files Short design report I have a few questions: Q1: Could you share the preferred IGBT module, switching frequency target, and cooling method? Q2: Could you specify the transient scenarios and load conditions to be covered? Over 8 years of experience in high-power converter design and EV powertrain systems. Similar projects I have done: 110 kW IGBT Buck Converter Design for EV DC-DC Chopper with Gate-Driver Circuitry Loss Calculations and Thermal Modelling High-Current DC-DC Converter Design with Simulation, Protection Strategy, and BOM for Electric Vehicle Applications Software I can use: LTspice MATLAB/Simulink Altium Designer I am ready to start immediately. Thank you! Warm regards, Abubakar
₹56,250 INR in 7 days
5.1
5.1

Dear Client, I propose an electrical design and simulation package for your IGBT buck converter, subject to confirming the operating specifications. At 360 V and 300 A, input power is 108 kW, so 110 kW continuous output is not achievable within that input limit. At 94% efficiency, 110 kW output requires approximately 325 A at 360 V. We should also define the minimum regulated voltage and an absolute ripple limit near zero output. The work will cover topology and switching-frequency assessment, IGBT and gate-driver selection, magnetics, snubbers, sensing, and protection. Deliverables will include schematics, component and loss calculations, steady-state and transient simulations, a preliminary thermal model, a BOM with dated availability notes, and layout guidelines. The report will assess efficiency, ripple, and predicted junction temperatures against the agreed operating envelope and document protection behaviour and model limitations. My proposed fee is INR 68,000, with delivery within 25 days after the requirements are agreed and necessary inputs are received. One consolidated revision is included. PCB Gerbers, fabrication, firmware, and physical validation are excluded. Simulation results will guide prototype testing rather than constitute hardware qualification. Kind regards, Mahmoudreza
₹68,000 INR in 25 days
5.0
5.0

Dear Sir/Madam, **Please Read** I have 10 years of experience in power electronics and can design the high-power IGBT buck converter for your EV project. I can handle the complete schematic, IGBT and gate-driver selection, design calculations, MATLAB/Simulink simulation, thermal analysis, protection, and BOM. I can also provide the simulation files and design report with efficiency, ripple, thermal, and protection results according to your requirements. Please check the reviews and works in freelancer. I look forward to working with you. Let’s connect in the chatbox for further discussions. Thank You. Dr. Divya.
₹37,500 INR in 7 days
4.2
4.2

As an engineering expert Having prior experience of working in designing converters I want to offer my services. Let's connect to discuss details.
₹56,250 INR in 7 days
4.2
4.2

With impeccability in all my past 56 projects with a consistent ⭐ 4.9★ rating and 96% on-time delivery, I am ready to leverage my Electronics expertise to deliver superior results on your 110 kW IGBT Buck Converter Design project. Although predominantly skilled in software and AI, the challenges of this endeavor resonate with my problem-solving abilities. Over the years, I have developed logical, analytical mindsets that will enable me to meticulously engineer an efficient, high-powered DC-DC converter in line with your specifications. Although Powertrain design might not be a direct match for my skill set it is a challenge I am eager to tackle. My multidisciplinary approach will allow me to offer fresh perspectives on optimizing efficiency, compactness, and cost without compromising on reliability - essential attributes for any EV environment. I'm well-versed in designing electrical schematics, conducting detailed design calculations, creating simulation files and BOMs that have consistently cut across as thorough, accurate and future-facing.
₹56,250 INR in 3 days
2.3
2.3

With a broad-based engineering background, including a strong foundation in electrical engineering and electronics, I have what it takes to deliver all the required deliverables in your requested project promptly and to the highest standard. I have a BSc in Electrical Engineering that has given me depth of knowledge across areas like magnetics, semiconductor devices (like IGBTs) simulation, layout design as well as experience with popular simulation tools like PSpice, LTspice, MATLAB/Simulink among others. Additionally, my experience as the CTO of an AI-driven startup where I led end-to-end technical solution development along with custom tools for data extraction and automation, will be invaluable for this demanding task. Building on my proven ability to deliver exceptional work within agreed timelines while meeting stringent quality specifications at scale, I'm confident that I can deliver on your acceptance criteria and exceed expectations. Thank you for taking the time to see how my diverse skill set aligns with your needs. Let's get started on crafting a highly efficient DC-DC chopper that will power the future of electric vehicles!
₹37,500 INR in 7 days
2.2
2.2

Before selecting the IGBT module or switching frequency, I would first reconcile the electrical operating points. At 360 V × 300 A, the stated input limit is 108 kW, while 170 V × 650 A corresponds to 110.5 kW output before converter losses. The required continuous operating point therefore needs to be clarified. I would also establish the following before component selection: • Is 650 A continuous or peak, and for what duration? • Required minimum output voltage at full current? • Available cooling method and coolant/ambient conditions? • Maximum allowable input/output current ripple? • Isolation requirements between control, chassis and HV domain? • Target switching-frequency range and packaging constraints? • Is the 360 V bus nominal, or what are its actual min/max limits? I have experience with power-electronics simulation and electronic/PCB design, but I want to be transparent that I do not have previous production experience designing a 110 kW EV IGBT converter. Therefore I would not present myself as the senior EV power-converter engineer required to independently guarantee this design. If you are open to engineering support focused on simulation, calculations or documentation under a senior power-electronics engineer, I would be interested in discussing that scope
₹56,250 INR in 9 days
0.4
0.4

?IF YOU'RE NOT HAPPY, YOU DON'T PAY.? Recently, I helped a client optimize a power electronics design for an electric vehicle application, achieving their efficiency targets without compromising on reliability. I can assist you in designing a high-efficiency DC-DC chopper tailored to your specifications and performance metrics. I noticed you emphasized the importance of thermal performance, switching strategy, and a robust design for an EV environment. These aspects are crucial for achieving the efficiency and reliability you desire. I have extensive experience in power electronics and have worked on similar high-current converter projects outside of Freelancer, but I am new to Freelancer. I look forward to discussing how we can bring your vision to life. Regards, MORNE.
₹37,500 INR in 14 days
0.0
0.0

I can develop an auditable preliminary design and simulation package for the 110 kW IGBT buck converter. I will build the switching model in MATLAB/Simulink or LTspice, size the inductor and key semiconductors, evaluate steady-state and transient operation across 0–170 V, estimate conduction and switching losses, and document ripple, efficiency, thermal margins, and protection thresholds. Deliverables will include the schematic, simulation files, design calculations, preliminary thermal/heatsink model, BOM with part-selection rationale, layout guidance, and a concise engineering report. I will clearly distinguish simulated results from bench validation and flag any margin that depends on final device, magnetics, cooling, or packaging data. My background includes MATLAB/Python signal and engineering analysis, and I can provide a structured, reviewable model rather than unsupported production claims.
₹50,000 INR in 10 days
0.0
0.0

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