SR Motor downscaled by Japanese profesor
Future electric motors build will be SR Motors.
The small-size SR motor was developed by Akira Chiba, professor at the Department of Electrical Engineering, Faculty of Science & Technology, Tokyo University of Science.
The prototyped SR motor has the same size as the 50kW synchronous motor equipped in the second-generation Toyota Prius. Curently all produced Electric cars are equipped with a synchronous motor whose rotor is embedded with a permanent magnet.
But as the permanent magnets are getting more and more pricey (the price has doubled or trippled) because of higher demand, the future of SR Motors is now imminent.
Specifications:
- Maximum torque of 403N·m
- Efficiency of 86%
- The torque density of the SR motor is 45N·m/L.
SR motors have a significant torque ripple, especially when operated in single-pulse voltage control mode. This is the price to pay for high efficiency. For many applications where the machine is operating at fairly high speeds, this is not a problem since the mechanical time-constant is far longer than the fast rates of change of instantaneous torque produced by the motor.
A four-phase 8/6 switched-reluctance motor is shown in cross section. In order to produce continuous shaft rotation, each of the four stator phases is energized and then de-energized in succession at specific positions of the rotor as illustrated.
There is some literature, if you want to get further….
Image source: here
Post source: Tech-On
Popularity: 22% [?]
Related Posts :
There is a group of researchers at the Tokai University, that invented a new brushless DC motor ...
Toyota is promising two new hybrid vehicles and the start of lithium-ion battery production next ...
This info is just great. It comes from Toyota which is currently developping a charging station ...
RiverSimple is designing small, urban, two-seater car, which will be powered by hydrogen fuel c ...
Yuneec E430 is a first electric plane which will be produced in mass production environements. I ...
Other posts from hybrid cars
- Electric Vehicle from TATA
- Laboratory of french Electric vehicles
- Nissan will be producing EV called Nissan Leaf
- Mitsubishi i-Miev will be cloned and named Citroën C-Zero and Peugeot iOn
- Tesla Roadster for 2700 miles drive long
- Rinspeed - electric car to fit into a train
- Nissan gonna put in production new electric car in 2010
- Lotus might come with solar powered plug-in city car
- Small hydrogen car OpenSource
- Bus with ultracapacitors in Paris
- Nissans ZEV - Zero Emission Vehicle
- Convert your car into electric one...
- Aptera 2E Electric Car - nice review video
- Toyota iQ is future electric vehicle, code name FT-EV
- Volt - the test drive by NBC reporter
- 74.3 mpg from Volkswagen
- Mitsubishi MiEV - high efficient electric vehicle
- Solar car breaks record in CANADA
- New electric car from TATA is called Indica
- MDI prepares new Air cars for spring 2009
- Chevrolet Volt at Paris Motor show pictures
- Videos of Chevy Volt
- New technology of LiFePO4 batteries for PHEV and EV will win the battle
- Plug-in Prius tested in the UK
- Tata's Indica Electric car hits the Norway market at 2009
- Honda's hybrid is gonna be Prius Killer
- Toyota plug-in hybrids ahead on schedule
- Energy Innovation has came up with new product using fresnel lens
- Nissan Electric car going to sell in 2010
- Solar Prius - a new way to gain efficiency for the japanese hybrid car
(No Ratings Yet)
Loading ...
