E for Engineer

0 Types of Motors used in Electric Vehicles Electric vehicles  are not something new to this world, but with the technological advancement and increased concern on controlling pollution has given it a tag of future mobility. The core element of the EV, apart from  Electric Vehicle Batteries , which replaces the Internal Combustion engines is an  Electric motor . The rapid development in the field of  Power electronics  and control techniques has created a space for various types of electric motors to be used in Electric Vehicles. The electric motors used for automotive applications should have characteristics like high starting torque, high power density, good efficiency, etc. Various types of Electric Motors used in Electric Vehicles DC Series Motor Brushless DC Motor Permanent Magnet Synchronous Motor (PMSM) Three Phase AC Induction Motors Switched Reluctance Motors (SRM) 1. DC Series Motor High starting torque capability of the DC Series

Charging a Detroit Electric car, 1919. An electric car is powered by an electric motor instead of a petrol engine. The electric motor gets energy from a controller, which regulates the amount of power—based on the driver’s use of an accelerator pedal. The electric car (also known as electric vehicle or EV) uses energy stored in its rechargeable batteries, which are recharged by common household electricity. Thus an electric vehicle will have three basic components : Energy Storage Unit Controller Propulsion system The energy storage unit will have a way to store power.  A chemical battery is the most common energy storage technology currently, although it can be different - for example - A fuel cell (which gets its electricity from hydrogen rather than a battery pack), can be used instead of a chemical battery as the energy storage unit. The controller acts as a pipeline or gateway to the electric motor..  The controller will do other things too - it moderates the power, w

Battery Pack Capacity Calculations The importance of a battery pack in the electric vehicle power train system is equally important to motor. If the motor provide torque to drive EV than battery pack is the source of power. The travel range of any electric vehicle is completely depends on the battery pack capacity. It's a big confusion to decide the battery pack capacity to get the desired travel range. Normally people considering battery pack capacity on some assumptions which caused the overrated or underrated capacity. In cases they will suffer higher investment or low travel range respectively. So how to calculate the battery pack capacity to get desired travel range in your EV. Before starting the battery pack capacity calculation it's required to understand some variable factors of battery power consumption. 1. Motor  Normally the motor used in EV is bldc specially in ebike. Although the efficiency of bldc motor is quite good ranging from 70-86%. How ever it