Cleanfield Energy

Cleanfield Energy

1404 Cormorant Road, Unit #6
Ancaster, Ontario

Phone (905) 304-5223
Toll-Free 1 (866) 430-VAWT
Fax (905) 304-5221

Cleanfield Energy™ develops, manufactures, markets and distributes innovative renewable energy products. As organizations, businesses and governments are becoming more aware of environmental concerns, Cleanfield offers economical and green energy solutions to overcome those challenges.

These solutions include the Cleanfield V3.5, a modular vertical-axis wind turbine for residential/agricultural ground mounts, and commercial rooftop or ground mounts. The Cleanfield V3.5 can be mounted on suitable flat rooftops, towers, silos, or poles.

The Cleanfield V3.5 can provide homeowners and businesses with renewable, reliable electricity, emergency backup during blackouts and brownouts, and savings on their utility bills. Those with the vision to try new solutions such as the Cleanfield V3.5 can change an uncertain future. They can free themselves from a dependence on an unsteady electrical grid system and empower themselves with a clean and reliable electricity resource.

Company History

* September 2002 – Cleanfield Energy™ established by cofounders Mihail Stern, Alexander Trica and Tony Verrelli
* November 2002 – University of Timisoara, Romania, commenced Research & Development of Cleanfield’s VAWT in conjunction with our engineering team
* January 2004 – Cleanfield Energy™ commenced testing of the first prototype VAWT
* April 2006 – McMaster University’s Mechanical Engineering Department successfully tested the VAWT at the 9-metre NRC wind tunnel facility in Ottawa, Ontario, Canada
* September 2006 – Ownership changed; owners finalized an RTO with Strike Resources, resulting in a name change to Cleanfield Alternative Energy, which became the parent company of Cleanfield Energy™
* September 2006 – Cleanfield Alternative Energy commenced trading on the TSX Venture Exchange under the symbol AIR (TSXV-AIR)
* June 2006 – Cleanfield Energy™ held a media release for the offical naming of the commercialzed Cleanfield V3.5
* November 2007 – Cleanfield Energy™ releases a letter of intent (LOI) for the sale of 500 turbines.



Main structural components:

  • Turbine – composed of three blades, six arms that connect the blades and the shaft, and a shaft (centre post), which connects the arms and the generator. This component converts kinetic wind energy into mechanical rotational energy.
  • Generator – a low-speed direct-connected permanent magnet synchronous generator that converts the rotational mechanical energy of the turbine rotor into electric energy. It produces electricity from the rotation of the turbine rotor after it converts potential energy in the wind into electricity
  • Power electronics including the inverter, controller and diversion (dump) load – these are the technologies associated with the efficient conversion, control and conditioning of electric power by static means from its available input form into the desired electrical output form. The inverter is extremely innovative, as it is tailor-made and programmed specifically for the VAWT, but can be configured to accept additional energy sources (e.g., solar, micro-hydro), creating a hybrid renewable energy system.

Other characteristics include:

  • Controlled electro-mechanical brake – assembled inside the generator
  • Micro-vibrations of the blades to prevent ice buildup
  • The turbine top has provisions for installing a lightning rod
  • Optional batteries can store or provide energy based on the consumer’s use.

Cleanfield Energy™ has developed a 60kW Universal Inverter (UI). The UI has received positive test results to date at the Atlantic Wind Test Site in Prince Edward Island. It was installed at the Wind Energy Institute of Canada (WEICan) in May 2006 and is undergoing testing and evaluation.

The Universal Inverter allows for the development of an inverter product family for wind turbine applications ranging from 30kW to 250kW. The UI can work on a variety of generators, such as induction, synchronous with permanent magnets or field windings, and DC. The UI works with generators with the nominal stator frequency at 50 Hz or 60 Hz and with low-speed direct shaft generators. The UI can deliver the energy produced to a three-phase or single-phase grid or can work in an autonomous system and create its own three-phase or single-phase grid. In all situations, the grid frequency can be 50 Hz or 60 Hz. This variety of applications involves reconfiguration of building blocks and loading of different firmware.

The hardware uses a classical approach of two power converters, one controlling the generator to turn the turbine to an optimal speed (maximum output power) and the second to transfer the energy produced by the generator to the AC line. In situations in which there is a significant difference between the generator’s voltage and the AC voltage, the cost of the application will dictate the use of a transformer between the AC line and the UI or a DC boost or buck-cell between the two power converters.

Using the UI in a wind turbine application produces energy at lower wind speeds. Once the turbine turns, depending on its performances, the inverter can deliver energy to the grid.

The UI has been developed in accordance with international standards in terms of power quality, safety and environment.

Geothermal and Solar Techs will be available in the near future

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