Let's discuss about thoughts, first requirement of any vehicle, I will discuss about the operating
point of the vehicle operating plant.
We'll discuss more about Equilibrium Point and operating in the Electric Motor Association, but get
a slightly good idea about the operating point of an.
So they can has a law, has a specific demand, that means each law demands minimum talk to attain certain
speed so that vehicle has a mass and a physical law, it demands certain minimum talk to at certain
speed.
Yet we can represent the speed in km per hour in case of vehicle as well as for considering motor,
because now we are discussing more about electric vehicle and electric motor.
The speed can be considered as the motor speed and talked about the motor.
We can also consider the force produced.
By the mortar that is tangential to the we then drive the vehicle, but currently we are considering
the electric motor, so we will try to conserve the speed in the R.P.M. As we discussed earlier, high
speed motor.
Ten thousand.
So I will consider the same high speed motor.
Ten thousand to eight thousand is the max speed of the motor, which is a maximum speed of the vehicle.
Also, we have seen that the linear relation and get we are assuming for the electric vehicle and by
the motor will consider suppose the maximum considering corrida.
The hundred Newton meter is the talk.
So what is the operating vehicle demand, certain minimum target to operate at a certain speed and motor
electric motor produce to.
So it makes him talk at particular speed, the operating part of the vehicle is when this both match
and become exactly equal to each other, that is targeted by the mortar, and that is by the law that
we demand dominion, but at a certain speed.
So that vehicle will be at equilibrium point when applied torque that is produced by the motor will
become part of the vehicle that is opposing force, frictional force and opposing direct force that
all will be opposing force will decide, decide the vehicle characteristics or characteristics that
we are going to discuss much more about the slower characteristics and motor characteristics in electric
motor transmission.
But yet we want to just understand operating quite so that we can understand what is the speed requirement
of any vehicle and that how we depend upon the driving condition that better or say, the driving cycle.
So if I see the.
This is the.
Typical characteristic of Martha.
If this is the third characteristic of.
We can then this is the.
Operating point for this.
Condition and this characteristic is the maximum allowable crime and this will be the operating budget
of this will be the speed of Wakhan and this is the nail, the motor in the equilibrium, steady state
condition.
But when when we can attain this equilibrium point and the steady state speed before this due to this
large gap, it will accelerate and speed will increase very fast.
So rate of speed will be higher in this case and it will reduce as its equilibrium condition and finance
will be achieved.
So this characteristic can be change, this characteristic will remain the same.
This characteristic can be modified by the controller or by the various methods so that we can have
the different operating point.
And according to different weather conditions, this characteristic also can be changed according to
the road condition and weather condition of different direction.
So we will have a different operating point.
So now you understand what is the operating point, so operating point to represent any.
Quite in between these characteristics.
We can now point out any operating point to understand this is the operating point of Wacol at a particular
time, so it represents the speed and dark.
This part represents the exact way of talking speed.
So if I represent one another, quite so certain, the the operating participative during starting support,
this is the operating point during high speed operations.
This is the operating point at some other parts of operation.
This is the operating point.
You can see various operating point.
Now, if you recall the driving cycle, we have seen the different driving cycle where the vehicle runs
to certain top speed and deceleration.
So we will have a different operating point.
So.
During starting, it will remain for less time if there is no any representative of third dimension.
That is how long this operating part for me is not a live picture yet.
But we need to think about operating point of vehicle that will help us to understand the passport requirement
of Wacol and to select and design the electric motor.
Let's discuss the talks with a requirement for different driving patterns.
So I hope you got the idea about the electric vehicle and vehicle operating by itself is the speed.
So toxified requirement of carbon cycle because of the carbon driving cycle, and if you think the An
area and if if you're driving the vehicle and sitting area, just image at which speed you generally
drive your vehicle most of the time.
So if I consider this is the maximum speed of our car, suppose 120 kilometers per hour and a thousand
is the motor speed, it doesn't r.p.m. and I consider torque maximum 100 Knewton meter.
And it can be very with the different vehicle, but yet we are assuming eight thousand is the motor
speed and maximum speed is 120 kilometers per hour.
A hundred eighteen meter dot.
So if we consider the city traffic and we can see if it got our vehicle, it's mostly going to run around
60 kilometers per hour speed and at this dot.
So these are the operating most of the time our vehicles will run on.
And during starting and certain operation really quite high to some operating point, will be there
also, but most of the operating point will be around this portion and for a certain time, we also
assume that a high speed also.
So what we are interested in we are interested in this area and this on that give us idea that if our
vehicle is going to drive in the urban driving cycle or in the city traffic, then it is going to operate
in most of the time in this speech talk.
Characteristics in this area and this region.
So what is important is we need to select the electric motor and also we can design the electric motor
such that it's the highest efficiency at this operating point.
And this combination of speed and.
If we compare the carbon cycle with the talksport requirement of the highways, then now we can have
idea if this is a Mexican food.
It is a Mexican thought then for the highway.
Our vehicle is mostly.
We run at this region for a longer time, and most operating flights will have at higher speed during
starting.
It will also.
Essakane.
Stable at last, but most of most operating quite well with high speed, so we are interested in this
region.
So selection of mortar as well as the.
We can also design the electric motor, so if electrical engineer is studying the subject and they also
consider the design of electric motor for this the roads, we are also going to discuss about the different
characteristics of different motors.
A selection of motor be made by each engineer is going through this code that we are going to discuss.
One more thing I would like to add if electrical engineering is that.
They will know that the we are covering the very high speed, higher r.p.m. up to more than 8000, 10000,
because when we designed the electric motor for the high speed electric motor generally are waitress's
better and we will have the smaller and compact sized motor designed for the higher speed, particularly
in case of induction motor.
But if we want to get less motor and we need to go for the the LDC and some special designed motor,
and if you want the fixed gate system, then we can go to the induction motor and we can also design
motor for the particular speed either gateless operation or the fixed gate operation.
But currently we are considering high speed motor keeping in mind the application of induction motor.
So, OK, you got the idea about our requirement for the hybrid driving cycle and possible requirement
for the urban driving cycle of the vehicle is different.
And it will USA Today about the selection of electric motor because the efficiency is most important,
particularly in the electric vehicle, because we want the higher range and this is more important in
case of electric vehicle it compared to AC.
So if you summarize, it is important to understand our speed requirement of vehicle to optimize the
vehicle performance and improve efficiency and range.
It helps in selecting electric motors for particular reapplication, as well as in designing the electric
motor.
This is why and how we record the information about the speed requirement of the vehicle, and it is
depend upon the driving and driving cycle.
That means its application despite its top speed requirement.
And accordingly, we need to select the electric, motor or electrical engineers can design the electrical
motor accordingly.