Introduction To Hybrid Electric Vehicle And Key Challenges

Due to increase in fuel cost and high efficiency demand from market, electric vehicle development is ramped up. Toyota launched its first Hybrid Electric Vehicle (HEV) and it is commercially available across the world.  This article focuses on introduction of HEV and some of its design challenges in electrical system perspective. It also covers how simulation technology is going to play important role in the product (HEV) development.

Inverter, battery, converter and motor are the major additional or new components in the vehicle to make if HEV or EV. Here the battery is also referred as additional component as it would battery pack unlikesingle battery in existing conventional vehicle. Refer figure1, the major components and its likely positions are indicated in the vehicle.

Read full article @ http://www.evhub.in/content/introduction-to-hybrid-electric-vehicle-and-key-challenges/

Permanent Magnet Motors Introduction And Trends

Induction motor is preferred choice of manufacturer and customer primarily due its robustness, easy manufacturing, and low maintenance. But is this the most efficient motor? Answer is obviously no. Efficiency is function of losses, so let us revisit the Induction Motor losses as shown in figure1. Now if compare these losses with permanent magnet (PM)motor, we would notice that there is rotor copper loss which is almost 15 to 20% of overall losses.

As these losses goes down the cooling requirement of motor can be     reduced.

Read full article @ http://www.evhub.in/content/permanent-magnet-motors-introduction-and-trends/

EVHUB.IN 's stall in Bangalore International Auto Expo 2010 as EV media ...

Video Of EVHUB's Stall In Bangalore International Auto Expo 2010

EVHUB's Stall in Bangalore International Auto Expo 2010 as Electric Vehicle media partner to the event. 


Go the video - http://www.evhub.in/content/video-of-evhubs-stall-in-bangalore-international-auto-expo-2010/

Battery Technology Used In EVs

A battery is the most expensive and least environmentally friendly component of an electric car. It is a real pain - a hurdle that keeps the electric motoring from development. Using the knowledge we posses, we cannot make an EC travel further than 120 miles between recharges.

With such a low range it is and remains limited by city borders not giving us the real mobility and flexibility. Is there a chance we could come up with a new electric car battery that gives us a better range? Let's first look at the known and available options.

1.    Lead-Acid Batteries

Although Alessandro Volta invented a battery in 1800, it was 1859 when a lead-acid prototype was created by Gaston Plante. These batteries are robust, tolerant to abuse, tried and tested and because of their low cost.

Ø  For higher power applications with intermittent loads however, Lead acid batteries are generally too big and heavy and they suffer from a shorter cycle life and typical usable power down to only 50% Depth of Discharge (DOD). Despite these shortcomings Lead acid batteries are still being specified for Power Net applications (36 Volts 2 kWh capacity) because of the cost, but this is probably the limit of their applicability and NiMH and Li-Ion batteries are making inroads into this market.

Ø  Lead-acid batteries are composed of a Lead-dioxide cathode, a sponge metallic Lead anode and a Sulphuric acid solution electrolyte. This heavy metal element makes them toxic and improper disposal can be hazardous to the environment.
The cell voltage is 2 Volts 

read full article @ http://www.evhub.in/content/battery-technology-used-in-evs/