Generators for Small Wind turbines

We have developed highly efficient patent pending technology of direct drive generators for Distributed & Community Wind turbines.

Generators for BioGas & BioDiesel engines

Our generator technology has unique advantages for power generation

Generators for Large Wind turbines

Our novel direct drive generator technology is scalable up to 8MW wind turbines.

Design in progress.

 

 

Motors for Electric Vehicles

EVR's motors fits to any type of electric & hybrid vehicles, starting from cars to heavy machinery and ships.

First negotiations have been held with leading vehicle companies.

Generators for Tidal turbines

Our novel direct drive generator technology is scalable up to 2MW Tidal turbines

 

 

 

Generators for Marine Applications

Power generators with high efficiency for marine applications, such as ships and military applications are planned.

Technology

The Need

Recently, wind turbine design optimization philosophy has been shifting from a predominant reliance on gearboxes towards an increased use of direct-drive technology with permanent magnet generators (PMGs). This trend has been motivated by customer demand for increased reliability (following experiences with bearing-related gearbox failures) and the higher power-to-weight ratios attainable in turbines with direct drives. Across the entire wind power market, direct drives will take 25% market share by 2015 (Navigant).

The Product
EVR Motors developed & tested a patent-pending novel, direct drive generator for variable RPM (Revolutions Per Minute) input sources. The technology is based on a unique design of the generator magnetic system and topology.
Our novel design enables the use of magnets in the generator from both sides, removes entirely the iron from the rotor, and less electrical steel is being used.
As such our generator uses significantly less iron, magnets and copper.

 IRTFPM - Ironless Rotor Transverse Flux Permanent Magnet

Advantages
• Lightweight – at least 50% lighter than others (~10kg/kW), leading to a cost reduction of the turbine & its installation.

• High efficiency – above 94%, leading to significant increase in the capacity factor of the turbine.
• No need for expensive transformer in off-grid systems – the generator can directly produce low voltage & high current.
• Attractive prices.

 

Chosen Specifications

Rest of the available specifications available upon request

 

 

EVRG 5-200

5kW 

EVRG 20-100

 

Electrical Specifications

 

 

Rated output power, P [kW]

5.0

22.0

Rated rotation speed, [RPM]

200

100

Nominal current, I [A]

10.1

17.3

Nominal line voltage, U [V]

285

670

Connection

Star

Star

IP Class

IP 55

IP 55

Standard to be followed

IEC 60034

IEC 60034

Efficiency at full load, η [%]

93.2

93.5

Required torque at rated power, M [Nm]

255

2245

Phase resistance, Rph [Ohm]

0.346

1.14

Number of phases, m [-]

3

3

Insulation

Class F

Class F

Insulation voltage, [V]

2000

2000

Design lifetime

20 Years

20 Years

Mechanical Specifications

 

 

Mounting type

Horizontal & Vertical

Horizontal

Diameter,  D [mm]

512

586

Axial length of generator, L [mm]

116

370

Weight, Q [kg]

63

274

Max ambient temperature

+40°C

+40°C

Min ambient temperature

-20°C

-20°C

Max altitude above sea level, [mm]

1000

1000

Magnet material

NdFeB

NdFeB

 

Partners & Investors

 Horizon Green Tech Ventures

Alstom Power    Rotem Industries

 

Associations

World Wind Energy Association  Israeli Wind Energy Association

 

System Partners

 

Fortis Wind EnergyLight Wind Turbines

 

Contact Form

For all your inquiries, feedback or request for information, you can contact us by calling, or filling the contact form below.

Email: info [at] evr-motors.com

Our Address

EVR Motors Ltd.
53 Hapninim st., Hapninim Center
Ashkelon, 7863638, Israel
Phone: +972-8-6764438
Fax: +972-8-6761890
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