Chorus Motors - AbsoluteAstronomy.com

Chorus Motors PLC. is a subsidiary of the Gibraltar

Gibraltar

Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

-based research and development company Borealis Exploration Ltd. and has invented and developed an improved AC

Alternating current

In alternating current the movement of electric charge periodically reverses direction. In direct current , the flow of electric charge is only in one direction....

induction motor

Induction motor

An induction or asynchronous motor is a type of AC motor where power is supplied to the rotor by means of electromagnetic induction. These motors are widely used in industrial drives, particularly polyphase induction motors, because they are robust and have no brushes...

/drive system.

Meshcon

One example, the Chorus Meshcon motor, is a high-phase-order motor/drive system that offers up to ten times the 'burst,' startup, or acceleration torque of a conventional motor and drive of the same rated horsepower and base speed. The Chorus Meshcon system provides high torque at low speeds without compromising high-speed operation and performance. This configuration is ideal for traction and increased low-speed torque loads

The Chorus Meshcon Motor co-opts the harmonics that limit motor performance and that typically cause motor heating. This means a Chorus AC motor

AC motor

An AC motor is an electric motor driven by an alternating current.It commonly consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft that is given a torque by the...

can generate far more torque

Torque

Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

than its conventional brethren. It does this by changing both the layout of the magnetic coils and the power input waveforms of a standard AC induction motor. Because the Chorus Meshcon motor is software controlled, it can be "reconfigured" on the fly - changing smoothly from a high-torque low-speed motor to a low-torque high-speed motor - without losing power to the friction in a mechanical gearbox.

Star

Another example, the Chorus Star motor, can achieve much higher torque densities than a traditional 3-phase motor, but with no cost penalty. The Chorus Star concept utilizes concentrated, high phase order windings which allows the beneficial use of harmonics (temporal, spatial, and overload). Consequently, a Chorus machine can achieve much higher torque densities than a traditional 3 phase motor, but with no cost penalty. Chorus Star machines are superior (for this purpose) to three-phase machines as well as permanent-magnet machines .

WheelTug

Boeing Phantom Works

The Phantom Works division is the advanced prototyping arm of the Defense and Security side of The Boeing Company. Its primary focus is developing advanced military products and technologies, many of them highly classified, and has produced breakthroughs in defense, space and security.Founded by...

and Air Canada

Air Canada

Air Canada is the flag carrier and largest airline of Canada. The airline, founded in 1936, provides scheduled and charter air transport for passengers and cargo to 178 destinations worldwide. It is the world's tenth largest passenger airline by number of destinations, and the airline is a...

have successfully tested the Chorus Motor's system in a 'proof of concept' demonstration. The goal of this test was to show that onboard electric drive motors can taxi an aircraft and to determine the feasibility of WheelTug. Boeing and Chorus Motors have formed a partnership to develop and market this technology.

The parent company Borealis Exploration Ltd. signed an agreement with Delta Air Lines

Delta Air Lines

Delta Air Lines, Inc. is a major airline based in the United States and headquartered in Atlanta, Georgia. The airline operates an extensive domestic and international network serving all continents except Antarctica. Delta and its subsidiaries operate over 4,000 flights every day...

making Delta the development partner and launch customer for the Boeing 737NG version of WheelTug to allow electric ground taxi. The company Wheeltug PLC has been spun off as a subsidiary of Chorus Motors PLC. and the expected delivery of the first units is scheduled for 2010.

WheelTug and Co-Operative Industries completed an Electrical Load Measurement (ELM) test on a B737NG in January 2010 at Hartsfield-Jackson International Airport in Atlanta, GA to confirm sufficient power.

Wheeltug

WheelTug

WheelTug is a fully integrated ground propulsion system for aircraft which puts a high torque electric motor into the hub of the nose wheel to allow for backwards movement without the use of pushback tugs and to allow for forward movement without using the aircraft's engines. WheelTug will drive...

is a fully integrated ground propulsion system for aircraft which puts a high torque Chorus electric motor into the hub of the nose wheel to allow for backwards movement without the use of pushback tugs and to allow for forward movement without using the aircraft engines. WheelTug will drive the aircraft with power supplied by the onboard APU (Auxiliary Power Unit). The first version is being designed for the Boeing 737NG with delivery expected in 2012.

Car

The parent company Borealis has explored use of Chorus Meshcon in a Series hybrid vehicle.

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