Check out what the corn state has(Nebraska)Electric motorcycle | |
Anonymous Coward User ID: 635745 United States 03/23/2009 01:07 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 478762 United States 03/23/2009 09:13 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 478762 United States 03/23/2009 02:09 PM Report Abusive Post Report Copyright Violation | Solar Powered Cars traditionall are defined as cars which run on energy from the sun. They got their first recognision as a possible transportation method through the seriies of annual races across Australia. This definition however is changing, in recent years of the green movement, solar power explosion now allows people to charge plugin electric vehicles (PEVs) through solar panels installed on their homes and in recent history solar panels installed on the roof of the car itself. There is a very bright future for solar energy to power our transportation needs and we're just scratching the surface of the possibilitiesWe are at the time of the first airplanes,remember 1903. We have people like janitors to eggheads working on this. |
Anonymous Coward User ID: 479485 United States 03/23/2009 07:38 PM Report Abusive Post Report Copyright Violation | Solar Powered Cars traditionall are defined as cars which run on energy from the sun. They got their first recognision as a possible transportation method through the seriies of annual races across Australia. Quoting: Anonymous Coward 478762This definition however is changing, in recent years of the green movement, solar power explosion now allows people to charge plugin electric vehicles (PEVs) through solar panels installed on their homes and in recent history solar panels installed on the roof of the car itself. There is a very bright future for solar energy to power our transportation needs and we're just scratching the surface of the possibilitiesWe are at the time of the first airplanes,remember 1903. We have people like janitors to eggheads working on this. |
Anonymous Coward User ID: 479485 United States 03/23/2009 07:38 PM Report Abusive Post Report Copyright Violation | Solar Powered Cars traditionall are defined as cars which run on energy from the sun. They got their first recognision as a possible transportation method through the seriies of annual races across Australia. Quoting: Anonymous Coward 478762This definition however is changing, in recent years of the green movement, solar power explosion now allows people to charge plugin electric vehicles (PEVs) through solar panels installed on their homes and in recent history solar panels installed on the roof of the car itself. There is a very bright future for solar energy to power our transportation needs and we're just scratching the surface of the possibilitiesWe are at the time of the first airplanes,remember 1903. We have people like janitors to eggheads working on this. |
Anonymous Coward User ID: 476798 United States 03/23/2009 10:22 PM Report Abusive Post Report Copyright Violation | But we will find a way to keep our wheels rolling. All we need is to get our people to THINK. That is what Orlando Tony Parker is showing our young people.WE NEED TO THINK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! OUR SCHOOL SYSTEM IS NOT TEACHING OUR PEOPLE TO THINK.People may call the man a janitor,I will call him a THINKER. |
Anonymous Coward User ID: 479989 United States 03/23/2009 10:57 PM Report Abusive Post Report Copyright Violation | We type in Orlando Tony Parker in YouTube. This guy wants our kids to learn. Just take a look at his face, when he talks about the kids. I want my kids to take a look at his video. We have along way to go to get back on top. I like the way he is using that bike he made to teach the kids. |
Anonymous Coward User ID: 482505 United States 03/23/2009 11:43 PM Report Abusive Post Report Copyright Violation | We type in Orlando Tony Parker in YouTube. Quoting: Anonymous Coward 479989This guy wants our kids to learn. Just take a look at his face, when he talks about the kids. I want my kids to take a look at his video. We have along way to go to get back on top. I like the way he is using that bike he made to teach the kids. The guy is real,I tooked at the youtube video of him. He is doing a very good thing and he shows it in his face. |
Anonymous Coward User ID: 490427 United States 03/24/2009 01:11 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 641728 United States 03/24/2009 11:45 AM Report Abusive Post Report Copyright Violation | Mr Parker get 5 stars from us. Quoting: Anonymous Coward 490427 |
Anonymous Coward User ID: 491532 United States 03/24/2009 11:50 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 641878 United States 03/24/2009 03:36 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 482453 United States 03/24/2009 06:05 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 635745 United States 03/24/2009 07:22 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 491436 United States 03/24/2009 07:45 PM Report Abusive Post Report Copyright Violation | Youtube shows that Orlando is doing ,what we all need to Quoting: Anonymous Coward 635745do. Did he find a job yet? In the youtube vedio Orlando is riding a honda. He had Triumph jacket and hat on.???? The guy is doing good and thats what counts. I like the utube video |
Anonymous Coward User ID: 483757 United States 03/26/2009 01:17 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 635745 United States 03/26/2009 07:51 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 643987 United States 03/27/2009 11:47 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 478762 United States 03/28/2009 06:59 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 645454 United States 03/29/2009 02:43 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 476798 United States 03/29/2009 05:39 PM Report Abusive Post Report Copyright Violation | World’s fastest production car to go electric. Quoting: Anonymous Coward 645454Now check out the post on the GLP on this one. Up to 7 years before charging?Did I read this right? That is bull! Power must be charged Some lies are just stupit. |
Anonymous Coward User ID: 479485 United States 03/29/2009 07:07 PM Report Abusive Post Report Copyright Violation | As increased energy efficiency, and particularly fuel efficiency, becomes a greater concern, hybrid and electric vehicles gain greater prominence in the market. Electric vehicles (EVs), in particular, provide an attractive option as they produce no emissions during operation, isolating any potential emissions and effluents in the manufacturing and energy-generation streams. Hybrid Technologies worked with Kennedy Space Center in the testing and development of its line of electric vehicles. The necessary energy stores to support a shift to EVs already exist, as utilities constructed to address peak demands have off-peak surpluses sufficient to charge about 180 million plug-in hybrid or all-electric cars. According to a report from the U.S. Department of Energy’s Pacific Northwest National Laboratory, there is enough excess generating capacity during the night and morning to allow more than 80 percent of today’s vehicles to make the average daily commute solely using this electricity. Effective energy management sees its ultimate realization in the vehicle-to-grid (V2G) concept, in which plug-in hybrid and electric vehicles can be used to balance energy demand and consumption. In a V2G system, millions of automotive batteries could absorb excess power generated, and release it back into the grid at times of insufficient supply. With a several kilowatt-hour storage capacity per vehicle, millions of operational plug-ins could act as a safety net for the power grid, supplying backup power in an outage, with the vehicle owners credited for power returned to the grid. This smoothing of excess and deficiency in the power grid would also help stabilize intermittent sources of energy such as wind power and make them more viable alternatives. Historically, the primary obstacles to the widespread application of EVs were lack of infrastructure development and a lack of sufficiently robust battery technologies to consistently power vehicles for an extended duration and at performance levels suitable to a modern urban environment. Technology may at last have caught up with the need, and rising petroleum prices are encouraging more and more consumers to consider electric and hybrid vehicles. In addition, a study by the U.S. Department of Transportation has indicated that plug-in cars capable of 50 miles per day would meet the needs of 80 percent of the American driving public, the average daily commuters. NASA has taken a keen interest in battery-powered vehicles, and is encouraging their continued development. The “NASA Official Fleet Management Handbook,” regarding the use of alternative fueled vehicles, states: “Ideally, all Centers should have on-site alternative fuel facilities . . . . Centers are encouraged to use NEVs [Neighborhood Electric Vehicles] to fill inventory requirements where feasible.” Partnership The EV MINI Cooper proudly displays its NASA heritage and boasts a range of 120 miles at 75 miles per hour. Hybrid Technologies Inc., a manufacturer and marketer of lithium-ion battery-EVs, based in Las Vegas, Nevada, and with research and manufacturing facilities in Mooresville, North Carolina, entered into a Space Act Agreement with Kennedy Space Center to determine the utility of lithium-powered fleet vehicles. Under this agreement, the company supplied a fleet of cars for the engineers at Kennedy to test. In return for the engineering expertise supplied by the NASA employees, the Center was given the opportunity to use the zero-emission vehicles for transportation around the Kennedy campus. NASA contributed engineering expertise for the cars’ advanced battery management system, and vehicles selected for use in the Kennedy fleet included the Hybrid PT Cruiser, lithium smart fortwo, and a high-performance all-terrain vehicle. The vehicles were powered by Ballard Power Systems’ 312V 67 MS electric drive system, which has a 32kW continuous rating and delivers a peak power of 67kW, with torque of 190 Nm (140 lb-ft). Hybrid Technologies selected this motor based on its proven track record and excellent power-to-weight ratio. The electric PT Cruisers have a top speed in excess of 80 miles per hour and a range of 120 miles. Charge time is 6-8 hours with either 110-120 V or 220-240V, and the lithium-ion battery pack has a cycle life of more than 1,500 charges. In addition to the vehicles supplied to NASA, the company provided a fleet of lithium-ion battery-powered vehicles for use by the U.S. Environmental Protection Agency and the U.S. Navy. Product Outcome Hybrid Technologies deployed the first all-electric taxi in New York City and has begun demonstrating smart fortwo conversions like the ones used at Kennedy. The company also delivered an additional two PT Cruiser-based electric taxis and an electric Chrysler Town & Country minivan to the city of Sacramento for use by a private para-transit nonprofit organization. Most recently, Hybrid Technologies has produced an EV version of the popular MINI Cooper, which debuted in the December 2007 Sam’s Club catalog. The EV MINI Cooper proudly displays its NASA heritage, sharing the STS-128 designation with an upcoming Space Shuttle Endeavor mission. It boasts a range of 120 miles at 75 miles per hour, and is driven by a 40kW electric motor and powered by a 30kWh battery pack. The appeal of the electric MINI is strong and widespread, and Hybrid Technologies conversions have already attracted celebrity fans. Hybrid Technologies offers the LiV series of purpose-built lithium electric vehicles, which also includes custom motorcycles, utility vehicles, and mobility scooters. Also available from Sam’s Club, the 2007 Hybrid Technologies lithium-powered smart fortwo EV (also available as a limited edition STS-118 smart fortwo) has an estimated range of 150 miles, a top speed over 70 mph, and takes only 4 hours to charge at 220 volts. There are two electric motors that can be used in the vehicle, one from Ballard and one from Siemens VDO. The lithium polymer battery pack comes from Kokam America Inc., and the battery management system is Hybrid Technologies’ own. As an introductory offer, Sam’s Club included a behind-the-scenes trip to Kennedy and attendance at a space shuttle launch, with purchase of one of the EVs. When asked about the availability of amenities such as air conditioning and heating, comforts not always incorporated into EV conversions, Richard Griffiths, Strategic Relations for Hybrid Technologies, stated “The [smart fortwo EV] has absolutely every option, every feature that a regular, production smart car has.” Griffiths estimated the extra amenities consume about 5 percent of the vehicle’s battery capacity. “We’re offering the fully electric smart car to Sam’s Club members as it represents the latest in advanced lithium technology . . . . This limited edition STS-118 smart car will be the perfect addition for car collectors or the environmentalist wanting to make a difference by driving a zero emissions vehicle.” In addition to the MINI Cooper and smart fortwo conversions, Hybrid Technologies offers PT Cruiser and Chrysler Crossfire EV conversions. Even more impressive than its line of conversions, Hybrid Technologies now also offers a series of purpose-built lithium electric vehicles dubbed the LiV series. The LiV series is designed from the ground up at Hybrid Technologies’ Mooresville plant. The LiV Wise is aimed at the urban and commuter environments, and is larger and offers more interior space than the smart car, the conversion of which is called the LiV Dash. Hybrid Technologies has rounded out the LiV line with custom motorcycles, utility vehicles, mobility scooters, bicycles, and even a military vehicle. Hybrid Technologies plans to offer these vehicles to the U.S. market on a wider scale by 2009, and is especially focused on developing a system that will seamlessly integrate LiV Wise cars in small markets by 2009 and mass markets by 2010 |
Anonymous Coward User ID: 487122 United States 03/29/2009 07:53 PM Report Abusive Post Report Copyright Violation | As increased energy efficiency, and particularly fuel efficiency, becomes a greater concern, hybrid and electric vehicles gain greater prominence in the market. Electric vehicles (EVs), in particular, provide an attractive option as they produce no emissions during operation, isolating any potential emissions and effluents in the manufacturing and energy-generation streams. Quoting: Anonymous Coward 479485Hybrid Technologies worked with Kennedy Space Center in the testing and development of its line of electric vehicles. The necessary energy stores to support a shift to EVs already exist, as utilities constructed to address peak demands have off-peak surpluses sufficient to charge about 180 million plug-in hybrid or all-electric cars. According to a report from the U.S. Department of Energy’s Pacific Northwest National Laboratory, there is enough excess generating capacity during the night and morning to allow more than 80 percent of today’s vehicles to make the average daily commute solely using this electricity. Effective energy management sees its ultimate realization in the vehicle-to-grid (V2G) concept, in which plug-in hybrid and electric vehicles can be used to balance energy demand and consumption. In a V2G system, millions of automotive batteries could absorb excess power generated, and release it back into the grid at times of insufficient supply. With a several kilowatt-hour storage capacity per vehicle, millions of operational plug-ins could act as a safety net for the power grid, supplying backup power in an outage, with the vehicle owners credited for power returned to the grid. This smoothing of excess and deficiency in the power grid would also help stabilize intermittent sources of energy such as wind power and make them more viable alternatives. Historically, the primary obstacles to the widespread application of EVs were lack of infrastructure development and a lack of sufficiently robust battery technologies to consistently power vehicles for an extended duration and at performance levels suitable to a modern urban environment. Technology may at last have caught up with the need, and rising petroleum prices are encouraging more and more consumers to consider electric and hybrid vehicles. In addition, a study by the U.S. Department of Transportation has indicated that plug-in cars capable of 50 miles per day would meet the needs of 80 percent of the American driving public, the average daily commuters. NASA has taken a keen interest in battery-powered vehicles, and is encouraging their continued development. The “NASA Official Fleet Management Handbook,” regarding the use of alternative fueled vehicles, states: “Ideally, all Centers should have on-site alternative fuel facilities . . . . Centers are encouraged to use NEVs [Neighborhood Electric Vehicles] to fill inventory requirements where feasible.” Partnership The EV MINI Cooper proudly displays its NASA heritage and boasts a range of 120 miles at 75 miles per hour. Hybrid Technologies Inc., a manufacturer and marketer of lithium-ion battery-EVs, based in Las Vegas, Nevada, and with research and manufacturing facilities in Mooresville, North Carolina, entered into a Space Act Agreement with Kennedy Space Center to determine the utility of lithium-powered fleet vehicles. Under this agreement, the company supplied a fleet of cars for the engineers at Kennedy to test. In return for the engineering expertise supplied by the NASA employees, the Center was given the opportunity to use the zero-emission vehicles for transportation around the Kennedy campus. NASA contributed engineering expertise for the cars’ advanced battery management system, and vehicles selected for use in the Kennedy fleet included the Hybrid PT Cruiser, lithium smart fortwo, and a high-performance all-terrain vehicle. The vehicles were powered by Ballard Power Systems’ 312V 67 MS electric drive system, which has a 32kW continuous rating and delivers a peak power of 67kW, with torque of 190 Nm (140 lb-ft). Hybrid Technologies selected this motor based on its proven track record and excellent power-to-weight ratio. The electric PT Cruisers have a top speed in excess of 80 miles per hour and a range of 120 miles. Charge time is 6-8 hours with either 110-120 V or 220-240V, and the lithium-ion battery pack has a cycle life of more than 1,500 charges. In addition to the vehicles supplied to NASA, the company provided a fleet of lithium-ion battery-powered vehicles for use by the U.S. Environmental Protection Agency and the U.S. Navy. Product Outcome Hybrid Technologies deployed the first all-electric taxi in New York City and has begun demonstrating smart fortwo conversions like the ones used at Kennedy. The company also delivered an additional two PT Cruiser-based electric taxis and an electric Chrysler Town & Country minivan to the city of Sacramento for use by a private para-transit nonprofit organization. Most recently, Hybrid Technologies has produced an EV version of the popular MINI Cooper, which debuted in the December 2007 Sam’s Club catalog. The EV MINI Cooper proudly displays its NASA heritage, sharing the STS-128 designation with an upcoming Space Shuttle Endeavor mission. It boasts a range of 120 miles at 75 miles per hour, and is driven by a 40kW electric motor and powered by a 30kWh battery pack. The appeal of the electric MINI is strong and widespread, and Hybrid Technologies conversions have already attracted celebrity fans. Hybrid Technologies offers the LiV series of purpose-built lithium electric vehicles, which also includes custom motorcycles, utility vehicles, and mobility scooters. Also available from Sam’s Club, the 2007 Hybrid Technologies lithium-powered smart fortwo EV (also available as a limited edition STS-118 smart fortwo) has an estimated range of 150 miles, a top speed over 70 mph, and takes only 4 hours to charge at 220 volts. There are two electric motors that can be used in the vehicle, one from Ballard and one from Siemens VDO. The lithium polymer battery pack comes from Kokam America Inc., and the battery management system is Hybrid Technologies’ own. As an introductory offer, Sam’s Club included a behind-the-scenes trip to Kennedy and attendance at a space shuttle launch, with purchase of one of the EVs. When asked about the availability of amenities such as air conditioning and heating, comforts not always incorporated into EV conversions, Richard Griffiths, Strategic Relations for Hybrid Technologies, stated “The [smart fortwo EV] has absolutely every option, every feature that a regular, production smart car has.” Griffiths estimated the extra amenities consume about 5 percent of the vehicle’s battery capacity. “We’re offering the fully electric smart car to Sam’s Club members as it represents the latest in advanced lithium technology . . . . This limited edition STS-118 smart car will be the perfect addition for car collectors or the environmentalist wanting to make a difference by driving a zero emissions vehicle.” In addition to the MINI Cooper and smart fortwo conversions, Hybrid Technologies offers PT Cruiser and Chrysler Crossfire EV conversions. Even more impressive than its line of conversions, Hybrid Technologies now also offers a series of purpose-built lithium electric vehicles dubbed the LiV series. The LiV series is designed from the ground up at Hybrid Technologies’ Mooresville plant. The LiV Wise is aimed at the urban and commuter environments, and is larger and offers more interior space than the smart car, the conversion of which is called the LiV Dash. Hybrid Technologies has rounded out the LiV line with custom motorcycles, utility vehicles, mobility scooters, bicycles, and even a military vehicle. Hybrid Technologies plans to offer these vehicles to the U.S. market on a wider scale by 2009, and is especially focused on developing a system that will seamlessly integrate LiV Wise cars in small markets by 2009 and mass markets by 2010 100 mile range would work for over 90% of us. I would buy a car |
Anonymous Coward User ID: 635745 United States 03/29/2009 11:12 PM Report Abusive Post Report Copyright Violation | Ckeck out this motor!!!!!!!!!!!!!!!!!!!!!!! Brutally powerful electric motors are already here Raser Technologies, a technology licensing company that develops and licenses advanced electric motor, controller and related technologies, released independent test results last month at the Society of Automotive Engineers World Congress in Detroit that measured the combined effectiveness of its P2 Symetron motor and controller technology working together as a drive system. The test was at an independent dynamometer testing facility in Detroit and showed that a Symetron P2 motor driven by a matching Symetron controller consistently delivered more than 420 ft-lbs of torque on numerous test runs. In each test run more than 420 ft-lbs of torque was measured for a minimum duration of 60 seconds. Now put that on an electric motorcycle. |
Anonymous Coward User ID: 479989 United States 03/29/2009 11:32 PM Report Abusive Post Report Copyright Violation | Ckeck out this motor!!!!!!!!!!!!!!!!!!!!!!! Quoting: Anonymous Coward 635745Brutally powerful electric motors are already here Raser Technologies, a technology licensing company that develops and licenses advanced electric motor, controller and related technologies, released independent test results last month at the Society of Automotive Engineers World Congress in Detroit that measured the combined effectiveness of its P2 Symetron motor and controller technology working together as a drive system. The test was at an independent dynamometer testing facility in Detroit and showed that a Symetron P2 motor driven by a matching Symetron controller consistently delivered more than 420 ft-lbs of torque on numerous test runs. In each test run more than 420 ft-lbs of torque was measured for a minimum duration of 60 seconds. Now put that on an electric motorcycle. One bitchin motor |
Anonymous Coward User ID: 478762 United States 03/30/2009 09:25 PM Report Abusive Post Report Copyright Violation | * High Torque Low Cost * Ideal for Integrated Hybrid Market Applications PM performance without PM material (1.01 ft-lbs/lb) Overview Many applications require flat or hub style motors. Symetron™ AC induction motor technology applied to a “pancake” motor can produce the torque of a PM motor without using permanent magnet material. Early test results show powerful potential. Other benefits include reduced manufacturing costs, and operation at higher temperatures and higher RPM. Next Generation Hybrid Motor As hybrid vehicles become “electric motor dominant” they require a motor that can deliver more power and more torque at a lower cost with more reliability. Raser’s Symetron™ technology is available for license for “hub” style motors to meet the needs of the next generation of hybrid vehicle motors. Symetron™ technology offers PM motor performance with the economy of an AC induction pancake motor. The technology is ideal for many applications including integrated hybrid motors, intergraded starter generators, and is scaleable for a wide range of sizes from small scooters to the large heavy vehicles and generators. This is one motor that going to change things |
Anonymous Coward User ID: 478762 United States 03/31/2009 06:28 AM Report Abusive Post Report Copyright Violation | * Promising AC Induction Pancake New Design Quoting: Anonymous Coward 478762* High Torque Low Cost * Ideal for Integrated Hybrid Market Applications PM performance without PM material (1.01 ft-lbs/lb) Overview Many applications require flat or hub style motors. Symetron™ AC induction motor technology applied to a “pancake” motor can produce the torque of a PM motor without using permanent magnet material. Early test results show powerful potential. Other benefits include reduced manufacturing costs, and operation at higher temperatures and higher RPM. Next Generation Hybrid Motor As hybrid vehicles become “electric motor dominant” they require a motor that can deliver more power and more torque at a lower cost with more reliability. Raser’s Symetron™ technology is available for license for “hub” style motors to meet the needs of the next generation of hybrid vehicle motors. Symetron™ technology offers PM motor performance with the economy of an AC induction pancake motor. The technology is ideal for many applications including integrated hybrid motors, intergraded starter generators, and is scaleable for a wide range of sizes from small scooters to the large heavy vehicles and generators. This is one motor that going to change things Thinks for posting this information. |
Anonymous Coward User ID: 490923 United States 04/01/2009 12:11 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 491532 United States 04/01/2009 12:52 PM Report Abusive Post Report Copyright Violation | With more type of new power soruce and electric motors. Quoting: Anonymous Coward 490923We will have 100 plus miles per charge cars and motorcycles soon.Thinks Orlando Tony Parker from your help with our young people on utube. It take balls to do what you are doing. |
Anonymous Coward User ID: 496382 United States 04/01/2009 03:45 PM Report Abusive Post Report Copyright Violation | The permanent magnets are made from neodymium iron boron (NdFeB). NdFeB is the most powerful magnetic material at room temperature, with high flux density at high magnetization. It also resists demagnetization and is less costly and brittle than samarium cobalt, another widely used rare-earth material. The motors also deliver more power in a smaller size. For instance, to power the in-line drives of a paper machine directly at 220 to 600 rpm with a conventional asynchronous motor would require a motor frame substantially larger than that of a 1,800-rpm motor. The new permanent-magnet motor is, in most cases, the same size or smaller than an existing induction motor. Standard induction motors, normally designed to run at base speeds between 850 to 3,500 rpm, are not particularly suited for low-speed operation because efficiency drops with reduced speed. They also may be unable to deliver smooth torque at low speeds. A gearbox is the traditional mechanical solution for this challenge. However, gearboxes take up space, reduce efficiency, and need both maintenance and constant lubrication. Eliminating the gearbox saves space and installation costs, energy, and maintenance, and provides more flexibility in production line and facility design. The motor also delivers high torque at low speed, a benefit traditionally associated with dc motors. For example, low-base-speed permanent-magnet ac motors are the heart of a system known as the DriveIT Direct Drive Solution. This consists of a DriveIT permanent-magnet synchronous ac motor, controlled by a DriveIT low-voltage ac drive, based on the ACS 600 or ACS 800 ac drive and connected directly to a motor/load without gearboxes or pulse encoders. With a favorable weight-to-performance ratio, the new Direct Drive permanent-magnet motor from ABB provides high accuracy and reliability for industrial applications that require high torque at low speed without gearboxes and encoders. ABB's Drive IT Direct Drive also incorporates the company's exclusive Direct Torque Control (DTC) technology, which optimizes motor control and enables the drive to provide speed feedback without an encoder. "The DTC algorithm lets each motor drive calculate the state (torque and flux) of the motor 40,000 times/sec, which makes the drive virtually tripless," notes Chuck Hollis, manager of ABB's ACS 600 drives line. Eliminating the encoder further reduces maintenance, decreases downtime/stoppage, and increases a production facility's uptime and throughput. Optimal motor operation, based on load conditions, also saves energy. Sensorless vector control (SVC) evolved from what is called full field-oriented control (FOC). So most of the SVC algorithms use the FOC control architecture as the starting point, and then try to estimate the speed using motor current and voltage information instead of the encoder. In SVC, the flux and torque-producing currents (two separate current regulators) produced in the machine control torque and flux in the machine. In DTC, flux and torque of the machine are estimated and two (hysteretic) loops are closed without the intermediate torque and flux producing current loops, which run at 25 &micor;sec. Their small size and high accuracy have, in the past, made permanent-magnet motors preferred for use in servo applications and computer hard drives. But now, large permanent-magnet motors weigh in at up to 7 tons. The actual motor design is a radial-flux construction, air or water cooled, with a permanent-magnet rotor. Powers range from 22 to 670 hp (17 to 500 kW) and include base speeds from 220 to 600 rpm with voltages ranging from 380 to 690 Vac. The line is available in standard IEC-frame sizes from 280 to 400. All of the usual options and modifications available for traditional cast-iron induction motor frames are also available. Standard modifications include fan-cooled (TEFC), separate-cooled (TEAO), and water-cooled (TEWC) units. Because there are virtually no rotor slip losses, the rotor of the permanent-magnet motor stays cool, boosting power density. Water cooling the motor stator can increase power density even more. The use of permanent-magnet rotors in standard ac motor frames can double the torque produced. Electric motors are getting more powerful and smaller. |
1 | Electric motorcycle in nebraska | 07/31/08 |
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