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Electric Motor fault diagnosis in EVs.

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BY   AFZAL YOUSAF     Electric motor is considered as the HEART of the EVs as is the main motive element. Even though maintenance in electric vehicles especially in motor is very less but faults can occur like any other materials. Main parts of the motor are Stator, Rotor, Bearing, Shaft, Poles, Yoke, electrical connection etc. And possible electric faults that can occur in a motor are:- Electrical faults Mechanical faults In Electrical fault, Major faults are Rotor related faults and Stator related faults. And in Mechanical section, usual faults are Bearing faults and Eccentricity-related faults . These faults can be summarised by the location of the fault occurrence. Rate of occurrence of the above faults are shown below in the pie chart. From above we can see the Bearing faults and Stator related faults are the most common faults in Electric motor. And when we take a deeper look on the specific faults that occurs during these faults are listed below. Rotor...

Most exciting 10 electric cars in the world by Forbes 2020

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BY     AFZAL YOUSAF Electric cars are getting ready to compete with gasoline cars as technologies are developing and more companies focusing on manufacturing E-cars. EVs are usually faster and technically more advanced than gasoline cars. In this article you can find the list of 10 exciting cars in 2020 according to Forbes. TESLA ROADSTER 2020 No one could miss out Tesla when it comes to electric vehicles as everything they makes becomes a trademark. Tesla roadster 2020 is an all electric battery powered four seater sports car. Tesla is claiming that it can go from 0 to 60 mph in 1.9 seconds which is faster than any legal production car till the date of its announcement. Its consist of three electric motors, one in front and two in rear and range expected is 620 miles on single charge. LOTUS EVIJA Lotus Evija is an exciting 2000 hp all electric Hyper car model from iconic British sports car manufacturer Lotus . It is a limited production car unveiled in July 2019. The f...

Elon Musk Hints Battery technology with 50% more energy density ahead of Tesla Battery day.

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  BY     AFZAL YOUSAF Ahead of their much awaited Tesla Battery day Tesla Inc CEO ELON MUSK hints about a battery technology that that will improve current energy density of the batteries by 50%. If this happens, it allows electric vehicles to achieve longer range without much difference in battery size and probably reduction in weight of the battery. This will be a huge boost to EV sector. Elon musk tweeted that " 400 Wh/kg *with* high cycle life, produced in volume (not just a lab) is not far. Probably 3 to 4 years". Wh/kg is the common way to express the energy density of the battery. Energy density of the battery means how much energy can be stored in a battery on a particular unit . Currently 265 wh/kg is the maximum energy density of Li ion batteries. If Tesla  comes with batteries of energy density 400 wh/kg, it will be around 50% more of current system and helps EVs to break the barrier of low ranges. This will make EVs more competitive in automobile...

EV Charging station guideline by Ministry of power India.

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  BY    AFZAL YOUSAF As EV adoption will be increasing drastically in India on coming years, the need of charging stations is so high. As a result Govt. and many other organisations, Entrepreneurs are setting up charging stations in India. Read the article to know the guideline for EV charging station by Ministry of Power issued on October 2019. Indian Ministry of Power issued the Revised guideline and standards on October 2019 to enable faster adoption of EV ensuring safe, reliable and affordable charging. Also looking to promote affordable charging tariff to EV Owners and Charging station operators along with increasing the employability through this sector. As per the guidelines:- Private charging at residences/ offices shall be permitted. Distribution companies (DISCOMs) may facilitate the same. Setting up of Public charging station (PCS) shall be de-licensed activity and any individual is free to set up public charging stations provided that, such stations meet the...

1000 E- buses and 200 charging stations to set up in Delhi. Central Govt. assures subsidy.

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BY    AFZAL YOUSAF As per the new EV policy of Delhi govt. Delhi transport minister Kailash Gahlot   discussed issue of installation of  around 200 charging stations with Union power minister R K Singh . Delhi transport minister said that central government assured subsidies for the 1000 electric buses to be deployed in the city. As per the reports, Gahlot and Singh discussed the installation of charging stations in Delhi-NCR in the presence of officials from the State and Union territories as per the new EV policy by Delhi govt. First phase of the EV policy by Delhi targets to install around 200 charging infrastructure within one year. So there will be charging stations in every 3 km as per central govt. guideline. Delhi transport minister Kailash Gahlot tweeted that " Had a fruitful meeting today with Hon'ble Minister of Power @RajKSinghIndia and other stake holders. Heartfelt thanks & gratitude for your appreciation of Delhi Electric Vehicle Policy & ...

Types of Electric motors used in EVs.

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BY    AFZAL YOUSAF Electric motors are the main motive source of EVs. Working together with batteries, motor converts electrical energy into rotational energy and then into mechanical movement in wheels. Electric motor is usually referred as the "Heart" of the electric vehicle and it should have certain features to make it suitable for e mobility. As an ev enthusiasts and professional, when we look at the specifications of EVs, we find different types of motors are used like BLDC. PMSM, ACIM etc. In this article you can find the different types of motors used in EV. Types of motors used in EVs are following:- Direct current motor (DC) Brushless Direct current motor (BLDC) Alternate current Induction motor (ACIM) Permanent magnet synchronous motor (PMSM) Swithched reluctance motor (SRM) DC MOTOR DC Motor is an electric motor working on Direct current and converts it into mechanical energy. Main parts of the DC Motor are Stator, Rotor, Yoke, Poles, Stator Winding, Armature Wind...

Fault diagnosis in EV Battery.

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  BY    AFZAL YOUSAF As electric vehicles are increasing in our roads, peoples are eager to know more about EVs. There are few components in electric vehicle where fault can occur compared to IC Engine vehicles. Battery is the source of energy in EVs and it is one of the important part where failure can cause a costly breakdown for the vehicle. In the early stage, fault diagnosis in EV battery were simple and relies on over current , over voltage, over heating etc. But with improved technology, fault diagnosis in EV battery becomes more diverse and specific. Read this article to find out possible faults that may occur in your EVs battery,  working of BMS and Battery diagnostic system. Normally battery fault in EVs can be classified into four:- Battery voltage fault Battery current fault Battery temperature fault Battery state of charge (SOC) fault. In battery voltage fault , types of possible fault we need to check are Low voltage fault, Over voltage fault, High vol...

Cost and requirements for setting up a charging station in India.

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  BY   AFZAL YOUSAF Development of Charging stations are the vital part of the EV infrastructure in India. Charging station should be set up on a regular interval that will help people bend towards more to electric vehicle and makes EV more friendly amongst them. Indian Govt. set up an infrastructure guidelines that makes compulsory of setting up a charging station every 3 km in cities and 25 km in Highways. Also there should be a charging infrastructure on every 100 km for long range and heavy vehicles on national highways. But unfortunately, at present we are nowhere near this requirement and there is an urgent requirement to set up required charging station as number of EVs are increasing in near future especially in big cities. If you are an entrepreneur, ev enthusiast or a person who is looking to set up a charging station in India, Please read the article to get an idea about the set up cost, Infrastructure required, and Cost effectiveness. Major steps for the charg...

Indian Govt. to allow sale and registration of EVs without battery to boost EV sector.

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                                                                                                BY     AFZAL YOUSAF Indian ministry of road transport and Highways on Wednesday, August 2020 directed all the states and UTs to allow the sale of electric vehicle without batteries. Experts says that this is a move aiming to accelerate the using of swappable batteries and increase the uptake of electric mobility in the country. Currently battery is the most costliest part in the EVs, as it constitute of 30- 40% of the total vehicle price. This announcement will drastically reduce the price of  EVs and makes it more affordable for the people to buy. In the copy of the letter directed to States and UTs states that " For the promotion of ...

Top 10 Electric cars in India 2020

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  BY   AFZAL YOUSAF Electric vehicles are gaining its popularity worldwide and in India also. Many companies are launching their electric models to acquire their space in the Indian EV industry. If you are planning to buy an EV, Here you can find the list of Top 10 electric car models launched or to be launched in India. MERCEDES BENZ EQC Mercedes Benz  launched their first ever all electric vehicle,  EQC , in India. Mercedes Benz India launched the all electric SUV on 8th October 2020, which is a full electric version of GLC Class.  The vehicle is powered by Two  Asynchronous Three Phase AC Motors  each placed at front and rear axle. It together produces a maximum power of  402 bhp  and  765 nm torque.  It has All Wheel drive drive train.  Mercedes EQC achieves a  top speed of 180 kmph  and can accelerate from  0 - 100 kmph in just 5.1 seconds.   This vehicle is powered by  80 kWh Li ion...