Emrax Electric Motors

EMRAX

Emrax E-motors is an electric propulsion system manufacturer providing engine solutions for the aviation, automotive, and maritime industries.

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Manufacturing & delivery
Performance & use
Research & standards
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Product description Brand name and product description

The Emrax Electric Motor is an axial flux motor available with different battery capacities depending on the intended usage, manufactured by Emrax Electric. The motors are stackable to increase the available power. The manufacturer offers the possibility to build customized motor controller packages depending on the need.

Target region(s) Target region for distribution/implementation (listed by country if specified)

Worldwide

Distributors/implementing organizations Organization(s) distributing/deploying this product directly to communities/individuals?"

Emrax d.o.o

Market suggested retail price Price per unit or service price per usage/terms (USD). Subsidies noted.

Price depends on the configuration, a quote is needed for an estimate.

Competitive landscape Similar products available on the market. May not be a comprehensive listing.

Yasa, Magnax

SDG targeted United Nations Sustainable Development Goals (SDGs) targeted with this product/application/service

Goal 7: Affordable and clean energy

Target user(s) Target user/consumer base (country, income segment)

Aviation: Gliders and small airplane owners

Formula student car owners, Motorbikes, Racer cars, Trucks

Nessman Boats

Manufacturing/building method(s) Detail regarding solution production or construction method (instructions, mass production capacity, custom made,etc...)

The electric motors are manufactured at Emrax facilities in Slovenia.

Product Intellectual Property Open source/IP protected (note patent)/trade secret/other?

Patent-pending, international registered trademark

User Provision Model Where can the product be purchased/acquired by end users?

The potential user establishes a quote for a specific configuration and sends it to the manufacturer. The user then receives a reply with the expenses and can then order the engine. The manufacturer will then ship the product from Slovenia.

Distribution to date Number of units that have been deployed, downloads or users to date

Unknown

Fields marked are sourced values that have been evaluated by the manufacturer or a third party, all others are design specifications.

Capacity

The number of people that can fit within product [Persons]

N/A

Gear Ratio

The ratio between the rates at which the last and first gears rotate

N/A

Maximum load capacity (kg)

N/A

Design specifications Component and Operation overview including power, portability, facility requirements, preventative maintenance and user training requirements

Emrax motor has the following features:

5 possible motor versions with 5 possible battery capacities and available torque (52 kW/90 Nm, 68 kW/140 Nm, 109 kW/230 Nm, 200 kW/500 Nm, 380 kW/1000 Nm)
Axial flux permanent magnet motor
Input type: sinusoidal three phase
High torque at low RPM
3 cooling options: Air (IP21), Combined (IP21) or Liquid (IP65)
Possibility to stack two same motors on the same shaft
Power density up to 10 kW/kg
Gearless drive
Weight: around 7 kg
Air cooled, liquid cooled or combined cooled (Air+Liquid)
Max rpm: 6500
Motor efficiency: 92-98%

Product schematics Design and assembly illustrations

Technical support Technical support provided by

Provided by the manufacturer via contact by email

Replacement components Availability of replacement components (in-country, by order,...)

Bearings, internal discs, and jacks

Lifecycle Disposal and warranty

Lifetime of the motor is the same as the lifetime of the bearing

Manufacturer specified performance targets Designer / Manufacturer specified targets

– Customized in shortest time
– Best in class power density (up to 10 kw/kg)
– Best in class efficiency (up to 98%)
– Compact and durable design
– Stacking option

Vetted performance Findings of manufacturer evaluations or independent testing centers

In February 2014 thermal tests were performed. The motor was exposed to shock tests from -40°C to +160°C for 17 days (24h/day). The test results were satisfactory. In addition, customer feedback is continuously gathered.

Testing organizations Independent lab, academic research centers, etc.

The motor was laboratory tested in Piktronik d.o.o in 2010, Siemens GmbH (May 2012), and Letrika d.d.(November 2014).

Safety Potential hazards / risks related to operation of this product

Mixing up the polarity of the battery or a short circuit leads to a destruction of the drive and represents an acute fire hazard and danger of life.

Complementary technical systems Performance of this product is improved with another technology (eg. Cookstoves and Wind-blocking skirts)

One-man rigging aid

Academic research Academic research related to the product (e.g. published papers in peer-reviewed journals)

Allison, M. , Bidwell, B., Hopson, S., Smith, J., Streegan, C. and Villa, D., 2013, Formula Electric: Powertrain, Bachelor thesis, Department of Mechanical Engineering, Santa Clara University

Compliance with regulations Product certifications and standards referenced by designer/manufacturer

EMC certificate (E26)–electromagnetic field testing: the motor complies with essential protection requirements of EMC Directive 2014/30/EU. EMRAX approval number is: E26 10 R 05 1160.

EMRAX is in process of obtaining ISO 9001:2015 certificate.

EMRAX is in process of obtaining European Union Aviation Safety Agency (EASA) certification for EMRAX 268 motor

Evaluation methods Evaluation methods/protocols/guidelines referenced by designer or manufacturer.

Thermal tests, Schock Tests

Other information

None

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