Brushless DC Motors - Technology For Future Transportation

Now a days world is plagued with global issues like fuel shortage, global warming. No doubt Electric Vehicles are the solution for fighting against these issues. As convectional vehicles has fuel as energy source and engine as prime mover, Electric vehicles uses battery as energy source and electric motor as the prime mover to drive. The various options available for driving electric vehicle are DC motor, induction motor, and Brushless DC motors. 

In Electric Vehicle, there should a portable power supply. Hence we can use Battery to power the vehicles and DC is the default power supply. 

DC Motors: These motors constitutes of Brushes and commutator which will act as a mechanical position sensor on rotor and supplies the power supply to corresponding stator winding so that there will be a forward torque produced in the motor. Advantage of this motor is its constant torque characteristics at various rotor positions. But  following are the disadvantages of this motor  

• The Brushes will be wear out due to constant contact between rotation and stationary portions of motor.
• The commutator segments might get shorted due to the burned carbon precipitated in between which might result in unbalancing of the motor operation.
• Low operating efficiency

Hence, a DC motor needs a periodic maintenance to prevent it from permanent damage. 



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More electric vehicles will change electricity markets

19 de junio de 2010

Ford Motor Co. has announced it expects up to one-fourth of its fleet to be electric vehicles by 2020, only a decade from now.

Stories in USA Today and the Detroit Free Press note that of those electrified vehicles, 70% will be hybrids, 20% to 25% plug-in hybrids, the rest pure electric cars. 

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Ontario to offer rebates on electric, hybrid cars

Ontario Premier Dalton McGuinty sits behind the wheel of a Chevrolet Volt during a press conference in Toronto on Wednesday, July 15, 2009 to announce support for Ontarians buying electric vehicles. (THE CANADIAN PRESS/Darren Calabrese)

Updated: Fri Jun. 18 2010 6:00:47 PM

The Canadian Press

TORONTO — The Ontario government will offer consumers a rebate of between $5,000 and $8,500 if they buy a new plug-in hybrid or fully electric vehicle after July 1.
But the rebates will only be offered to the first 10,000 applicants who qualify, the government said Friday.
Details of eligibility for the rebate were not immediately available, but the government said it would provide full criteria and application forms on the Ministry of Transportation's website beginning July 1.

Read this news @ http://www.evhub.in/news/108#108

Federal grants fund thousands more electric vehicle charging stations

With six months before the release of major new electric car models from the likes of Nissan, Chevrolet and Ford, thousands of new public and home-based recharging systems are being installed.

The new infrastructure is initially focused on certain urban areas seen as key markets for new electric vehicles.

ECOtality, which began developing its plan for 12,000 new charging stations under its EV Project in October, said this week it is extending the program to Los Angeles and Washington DC thanks to an extended federal grant.

It will also extend its offer of free charging systems to include new owners of the Chevrolet Volt, and 1,000 more Nissan LEAF customers.

Another recharging company, Coulomb Technologies, which started installing 4,600 charging stations under its $37 million ChargePoint America program this month (see this BrighterEnergy.org story), will now also be providing 1,800 home charging points to Chevy Volt customers.

Chevrolet – one of General Motors’ brands – is the only motor manufacturer to be funding recharging infrastructure under both the EV Project and ChargePoint America schemes.

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