pard, another thing you need to consider, most of these home builders are running their ideas off the 48volt bus, NOT 300 volts, so it would not work in our situation. even the ones going higher voltages are running maybe 96 volt, which still, ours at 300, it won't work for us. Well.... i don't want to say it won't work for us, it will-it can but will take a lot more tinkering and engineering to do so, you can't just take their idea and overlay it on the energica and it'll work. I get you, god forbid something pops or you ding it into something, would hate to throw it away but there are uses for it. the battery is great for a storage batter for solar, as an example
aaron
True. Much more research required.
BTW, if you have not tried out Grok AI yet, give it a go.
I typed in 300V speed controller for EV and it gave me this:
"Since you're specifically asking about sourcing a 300V speed controller for an electric vehicle (EV), I’ll focus on practical options and guidance for finding one as of March 9, 2025. A 300V speed controller is a high-voltage component typically used in mid-sized EVs like cars, motorcycles, or custom conversions, so sourcing one involves balancing performance needs, availability, and budget. Below, I’ll outline where and how you can source such a controller, based on my knowledge of the EV ecosystem and typical supply channels.
Key Considerations for Sourcing
Before diving into options, clarify your requirements:
Current Rating: How much power do you need? A 300V controller might range from 100A to 500A (30 kW to 150 kW), depending on your motor and vehicle.
Motor Type: Ensure compatibility (e.g., BLDC, PMSM, or AC induction).
Features: Do you need regenerative braking, CAN communication, or programmability?
New vs. Used: Are you open to salvaged parts (e.g., from scrapped EVs) or only new units?
Budget: Prices can range from $500 for basic units to $3000+ for advanced, OEM-grade controllers.
Sourcing Options
1. Commercial EV Component Suppliers
These companies specialize in EV parts and often stock or can custom-order 300V controllers:
EV West (evwest.com): Known for conversion kits, they carry controllers like the Curtis 1238 series or Hyper9 systems. A 300V-capable Curtis controller (e.g., 1238E-7621, 96V–650V, 550A peak) might work, though you’d need to confirm voltage compatibility. Contact their sales team for exact matches.
Kelly Controls (kellycontroller.com): Offers high-voltage DC and BLDC controllers, such as the KHB series (up to 325V, 200A–600A). Prices range from $600–$1500. Check their catalog or email for a 300V-specific model.
Electric Motorsport (electricmotorsport.com): Supplies drive kits with controllers (e.g., ME1910 kit). Their offerings lean toward lower voltages, but they may source 300V units on request.
Cascadia Motion (cascadiamotion.com): Provides industrial-grade controllers (e.g., Rinehart PM series) up to 400V+. These are premium (>$2000) but robust for serious EV builds.
Action: Visit their websites, filter for 300V controllers, or contact them directly with your specs (voltage, current, motor type).
2. Online Marketplaces
For broader selection or deals:
Alibaba (alibaba.com): Search “300V EV motor controller” or “300V BLDC controller.” Suppliers like Shenzhen manufacturers offer units (e.g., 300V, 200A for ~$500–$1000), often customizable. Minimum order quantities (MOQs) may apply, but single units are negotiable. Verify supplier ratings and request specs sheets.
Amazon: Limited for high-voltage EV parts, but search “high voltage motor controller” for smaller-scale options. You might find RC-grade 300A ESCs (e.g., for boats), though they’re rarely EV-suited.
eBay: Great for used or surplus controllers. Search “300V motor controller” or “EV controller.” You might snag a salvaged unit from a Tesla, Leaf, or DIY build for $300–$800. Check condition and compatibility.
Action: Use specific keywords, compare listings, and message sellers for voltage/current confirmation.
3. Salvage and OEM Parts
Repurposing controllers from existing EVs can save money:
Tesla Components: Tesla Model S/X battery modules often pair with 300V–400V inverters. Salvaged inverters (e.g., via eBay or EV salvage yards) might cost $500–$1000 but require hacking or a compatible VCU (e.g., AEM VCU300).
Nissan Leaf or Chevy Volt: Older EV parts (250V–350V range) are widely available through dismantlers. Check sites like car-part.com or local junkyards.
OEM Suppliers: Companies like Dana TM4 or Bosch sell 300V+ controllers to manufacturers, but retail access is limited. You’d need a distributor or industry contact.
Action: Search salvage networks or forums like diynissanleaf.com for leads. Test units before use.
4. DIY and Open-Source Communities
For custom builds:
OpenInverter (openinverter.org): An open-source project for building or adapting inverters. Pair it with a salvaged Toyota Prius inverter (300V–400V capable) and customize firmware. Total cost: ~$500–$800 (parts + time).
Endless Sphere Forums (endless-sphere.com): EV enthusiasts often sell or recommend high-voltage controllers. Post your specs in the marketplace section.
X Search: I can search X posts for real-time leads if you’d like—e.g., “selling 300V EV controller.” Let me know!
Action: Join forums, download OpenInverter files, or ask for recommendations.
5. Specialty Manufacturers
For high-end or niche needs:
AEM EV (aemev.com): Their VCU300 (up to 400V, multi-motor support) is ~$2500 but offers pro-grade features like torque management.
Sevcon (BorgWarner): Gen5 controllers handle 300V+ systems (200A–500A), though they’re OEM-focused. Contact distributors like thunderstruck-ev.com.
VEICHI (veichi.com): Offers EV-specific controllers (e.g., EV series, 200V–400V) for motorcycles or small vehicles. Request a quote online.
Action: Email or call for pricing and availability; expect higher costs ($1500–$3000).
Recommendations
Quickest Option: Kelly Controls KHB series—affordable, available, and configurable.
Best Value: eBay/Alibaba for used or bulk units—riskier but cheaper.
High Performance: AEM VCU300 or Cascadia Motion—top-tier but pricey.
DIY Route: OpenInverter with a Prius inverter—flexible and community-supported.
Next Steps
Tell me more about your project (motor type, power needs, budget) or if you want me to:
Search X or the web for specific listings as of today, March 9, 2025.
Analyze a controller from a link/post you provide.
Refine this list further!
What’s your priority—cost, speed of delivery, or performance?
regenerative braking details
battery management systems"
