Generators & Starters
Generator and starter-generator systems for mission critical applications.
Plettenberg is a leading provider of starter-generator / alternator systems for combustion engines used in mission-critical applications, including uncrewed systems, aerospace, motorsport, and many more.
Our product portfolio comprises:
- ORBIT SG Series – outrunner BLDC starter-generators
- NOVA SG Series – inrunner BLDC starter-generators
- SGCU Series – dedicated power electronics and control units
Plettenberg generator / alternator systems are compatible with boxer, inline, and single-cylinder engines ranging from 20 cc to 1,500 cc displacement. The covered electrical power range extends from 500 W to 30 kW.
Our systems are available in multiple integration levels: External Alternator Systems for standalone installation, Attachment Kits for direct installation on existing combustion engines, Frameless Integration Kits for seamless integration into engine housings.
All products are developed, tested, and manufactured at our headquarters in Germany in accordance with EN9100:2018 quality standards.
COTS Starter-Generators
Our commercial-off-the-shelf (“COTS”) starter-generators have been designed to cover a wide range of applications in demanding end-markets. Datasheets for all COTS products are available. Lead times are typically 4-6 weeks, with 24h premium shipment available for many products.
| Name | Engine Size | Rated Power Range | RPM range | Diameter/Length | Weight |
|---|---|---|---|---|---|
| ORBIT SG1 VAC 6.8 | 20 – 80 cc | 250 – 1,000 W | 2,000 – 8,000 | 100 mm / 26 mm | 425 g |
| ORBIT SG1 VAC 11.8 | 20 – 80 cc | 250 – 1,000 W | 2,000 – 8,000 | 100 mm / 26 mm | 425 g |
| ORBIT SG3 VAC 5.2 | 50 – 200 cc | 750 – 3,000 W | 2,000 – 8,000 | 140 mm / 27 mm | 800 g |
| ORBIT SG3 VAC 10.4 | 50 – 200 cc | 750 – 3,000 W | 2,000 – 8,000 | 140 mm / 27 mm | 800 g |
| ORBIT SG10 VAC 9.6 | 150 – 750 cc | 2,500 –10,000 W | 2,000 – 8,000 | 200 mm / 41 mm | 3,050 g |
MOTS
MOTS (“modified-off-the-shelf”) generators have the same mechanical parts as COTS products but come with a customized winding. The winding determines the VAC and allows for adapting the generator to the required voltage/rpm range. Plettenberg offers MOTS generators with electrical design support from our engineering team, including an engineering study, which covers data sheets and performance simulations.
Fully Custom
If a MOTS solution is not sufficient and significant tailorization is required, a FC (“fully-custom”) solution is the best choice. FC solutions are often highly application specific and adjusted to complex requirements. From our experience, most projects start with a COTS or MOTS solution, and progress to FC solutions as first data has been gathered and requirements become more rigid.
