Electric Vehicles & the Brushless DC Motor

ELECTRIC VEHICLES & the Brushless DC Motor First invented in the 1800s, electric cars fell off the radar during the early 20th century. But the need for alternative-fueled vehicles breathed new life into the concept in the 1960s. Since then, electric vehicles have continued to develop – along with the high-tech motors that power them. GROWTH OF ELECTRIC VEHICLES 43% †tII* of U.S. consumers say they're interested in buying an electric vehicle. THE REASON: MORE EFFICIENT LESS CO2 COST-EFFECTIVE ELECTRIC VEHICLE: 80% 2¢ PER MILE Tailpipe Emissions GAS VEHICLE: 12¢+ PER MILE 80% of the energy used by an electric vehicle is converted to usable power (Compared to 15% efficiency of gasoline engines) Even in cities that rely on coal for electricity, electric vehicles produce fewer CO2 emissions ANNUAL EMISSIONS PER VEHICLE (Ib. of CO2 equivalent) 2000 4000 6000 8000 10000 12000 14000 16000 ELECTRIC VEHICLE PLUG-IN HYBRID ELECTRIC VEHICLE HYBRID ELECTRIC VEHICLE CONVENTIONAL GAS VEHICLE 2011 BY 2015 BY 2020 40,000 2.7 MILLION 1/3 electric vehicles were sold worldwide – the most in any year in history plug-in electric vehicles are expected to hit the road of all cars purchased worldwide will be green cars 885,000 of those will be in North America $1.5 BILLION per year will be invested in electric vehicle technology Top cities for electric vehicle adoption: New York City, San Francisco, Los Angeles HOW ELECTRIC VEHICLES WORK BRUSHED DC MOTOR Permanent magnets bonded to steel ring (ring not shown) 0. Commutator Wound armature Brushes mounted in motor endshield (endshield not shown) TYPES OF ELECTRIC MOTORS USED IN ELECTRIC VEHICLES: • Brushless DC (BLDC) motor • Brushed DC motor •AC induction motor ELECTRIC VEHICLES THAT USE BLDC MOTORS: •Cars •Scooters •Motorized bicycles WHY A BLDC MOTOR? Brushless DC motors are commonly used in electric vehicles of all types because of the benefits they offer: Low maintenance 85-90% efficiency High operating speeds Quick response No brush sparking Compact size BRIEF HISTORY OF BLDC MOTORS 1965 1970s 1975-present NASA employs the BLDC motor to run the life support system in its Apollo Lunar Module and other aircraft. The U.S. Army builds and tests BLDC motors for use BLDC motors become common in computer disk drives, robotics, medical equipment, electric vehicles and many other applications. in heavy-duty vehicles. 1962 1968 The first brushless DC motor is developed to meet the need for reliable, high-efficiency, non-sparking motors. A BLDC motor is created for use in battery-powered tape recorders. sinotech www.Sinotech.com Infographic designed by Mad Fish SEO Copyright © 2013 Sinotech