1 00:00:02,100 --> 00:00:10,230 Let's discuss about thoughts, first requirement of any vehicle, I will discuss about the operating 2 00:00:10,230 --> 00:00:12,780 point of the vehicle operating plant. 3 00:00:14,220 --> 00:00:21,270 We'll discuss more about Equilibrium Point and operating in the Electric Motor Association, but get 4 00:00:21,270 --> 00:00:24,990 a slightly good idea about the operating point of an. 5 00:00:28,230 --> 00:00:39,930 So they can has a law, has a specific demand, that means each law demands minimum talk to attain certain 6 00:00:39,930 --> 00:00:51,000 speed so that vehicle has a mass and a physical law, it demands certain minimum talk to at certain 7 00:00:51,000 --> 00:00:51,540 speed. 8 00:00:52,560 --> 00:01:00,690 Yet we can represent the speed in km per hour in case of vehicle as well as for considering motor, 9 00:01:00,720 --> 00:01:05,910 because now we are discussing more about electric vehicle and electric motor. 10 00:01:06,420 --> 00:01:11,890 The speed can be considered as the motor speed and talked about the motor. 11 00:01:12,040 --> 00:01:14,700 We can also consider the force produced. 12 00:01:15,940 --> 00:01:25,660 By the mortar that is tangential to the we then drive the vehicle, but currently we are considering 13 00:01:25,660 --> 00:01:32,890 the electric motor, so we will try to conserve the speed in the R.P.M. As we discussed earlier, high 14 00:01:32,980 --> 00:01:33,640 speed motor. 15 00:01:33,640 --> 00:01:34,420 Ten thousand. 16 00:01:35,200 --> 00:01:39,880 So I will consider the same high speed motor. 17 00:01:39,910 --> 00:01:48,810 Ten thousand to eight thousand is the max speed of the motor, which is a maximum speed of the vehicle. 18 00:01:48,820 --> 00:01:59,950 Also, we have seen that the linear relation and get we are assuming for the electric vehicle and by 19 00:01:59,980 --> 00:02:05,690 the motor will consider suppose the maximum considering corrida. 20 00:02:05,780 --> 00:02:09,460 The hundred Newton meter is the talk. 21 00:02:11,460 --> 00:02:22,890 So what is the operating vehicle demand, certain minimum target to operate at a certain speed and motor 22 00:02:22,890 --> 00:02:24,820 electric motor produce to. 23 00:02:26,030 --> 00:02:35,150 So it makes him talk at particular speed, the operating part of the vehicle is when this both match 24 00:02:35,150 --> 00:02:44,390 and become exactly equal to each other, that is targeted by the mortar, and that is by the law that 25 00:02:44,390 --> 00:02:47,660 we demand dominion, but at a certain speed. 26 00:02:48,050 --> 00:02:56,540 So that vehicle will be at equilibrium point when applied torque that is produced by the motor will 27 00:02:56,540 --> 00:03:06,140 become part of the vehicle that is opposing force, frictional force and opposing direct force that 28 00:03:06,140 --> 00:03:14,030 all will be opposing force will decide, decide the vehicle characteristics or characteristics that 29 00:03:14,030 --> 00:03:20,900 we are going to discuss much more about the slower characteristics and motor characteristics in electric 30 00:03:20,900 --> 00:03:21,870 motor transmission. 31 00:03:21,890 --> 00:03:29,780 But yet we want to just understand operating quite so that we can understand what is the speed requirement 32 00:03:30,020 --> 00:03:37,880 of any vehicle and that how we depend upon the driving condition that better or say, the driving cycle. 33 00:03:39,100 --> 00:03:40,930 So if I see the. 34 00:03:42,740 --> 00:03:43,460 This is the. 35 00:03:44,710 --> 00:03:48,160 Typical characteristic of Martha. 36 00:03:49,470 --> 00:03:52,260 If this is the third characteristic of. 37 00:03:53,420 --> 00:03:56,120 We can then this is the. 38 00:03:57,130 --> 00:03:59,530 Operating point for this. 39 00:04:01,020 --> 00:04:08,710 Condition and this characteristic is the maximum allowable crime and this will be the operating budget 40 00:04:08,710 --> 00:04:17,250 of this will be the speed of Wakhan and this is the nail, the motor in the equilibrium, steady state 41 00:04:17,250 --> 00:04:17,840 condition. 42 00:04:18,120 --> 00:04:26,970 But when when we can attain this equilibrium point and the steady state speed before this due to this 43 00:04:26,970 --> 00:04:33,020 large gap, it will accelerate and speed will increase very fast. 44 00:04:33,730 --> 00:04:44,430 So rate of speed will be higher in this case and it will reduce as its equilibrium condition and finance 45 00:04:44,610 --> 00:04:45,540 will be achieved. 46 00:04:46,170 --> 00:04:50,510 So this characteristic can be change, this characteristic will remain the same. 47 00:04:50,760 --> 00:04:57,720 This characteristic can be modified by the controller or by the various methods so that we can have 48 00:04:57,730 --> 00:04:59,210 the different operating point. 49 00:04:59,460 --> 00:05:06,270 And according to different weather conditions, this characteristic also can be changed according to 50 00:05:06,270 --> 00:05:12,690 the road condition and weather condition of different direction. 51 00:05:13,140 --> 00:05:15,790 So we will have a different operating point. 52 00:05:18,150 --> 00:05:25,530 So now you understand what is the operating point, so operating point to represent any. 53 00:05:27,220 --> 00:05:30,160 Quite in between these characteristics. 54 00:05:34,600 --> 00:05:45,220 We can now point out any operating point to understand this is the operating point of Wacol at a particular 55 00:05:45,220 --> 00:05:49,780 time, so it represents the speed and dark. 56 00:05:50,290 --> 00:05:55,100 This part represents the exact way of talking speed. 57 00:05:55,840 --> 00:06:03,100 So if I represent one another, quite so certain, the the operating participative during starting support, 58 00:06:03,100 --> 00:06:07,560 this is the operating point during high speed operations. 59 00:06:07,840 --> 00:06:13,140 This is the operating point at some other parts of operation. 60 00:06:13,570 --> 00:06:14,850 This is the operating point. 61 00:06:15,190 --> 00:06:17,130 You can see various operating point. 62 00:06:17,440 --> 00:06:23,530 Now, if you recall the driving cycle, we have seen the different driving cycle where the vehicle runs 63 00:06:24,040 --> 00:06:26,760 to certain top speed and deceleration. 64 00:06:26,980 --> 00:06:29,240 So we will have a different operating point. 65 00:06:29,680 --> 00:06:30,070 So. 66 00:06:31,080 --> 00:06:37,060 During starting, it will remain for less time if there is no any representative of third dimension. 67 00:06:37,080 --> 00:06:42,330 That is how long this operating part for me is not a live picture yet. 68 00:06:42,720 --> 00:06:53,940 But we need to think about operating point of vehicle that will help us to understand the passport requirement 69 00:06:53,940 --> 00:06:58,260 of Wacol and to select and design the electric motor. 70 00:06:58,890 --> 00:07:04,910 Let's discuss the talks with a requirement for different driving patterns. 71 00:07:05,160 --> 00:07:14,130 So I hope you got the idea about the electric vehicle and vehicle operating by itself is the speed. 72 00:07:16,140 --> 00:07:23,570 So toxified requirement of carbon cycle because of the carbon driving cycle, and if you think the An 73 00:07:24,120 --> 00:07:30,870 area and if if you're driving the vehicle and sitting area, just image at which speed you generally 74 00:07:31,230 --> 00:07:33,490 drive your vehicle most of the time. 75 00:07:33,900 --> 00:07:43,080 So if I consider this is the maximum speed of our car, suppose 120 kilometers per hour and a thousand 76 00:07:43,080 --> 00:07:50,160 is the motor speed, it doesn't r.p.m. and I consider torque maximum 100 Knewton meter. 77 00:07:51,210 --> 00:07:58,040 And it can be very with the different vehicle, but yet we are assuming eight thousand is the motor 78 00:07:58,050 --> 00:08:00,900 speed and maximum speed is 120 kilometers per hour. 79 00:08:01,390 --> 00:08:03,450 A hundred eighteen meter dot. 80 00:08:03,990 --> 00:08:12,650 So if we consider the city traffic and we can see if it got our vehicle, it's mostly going to run around 81 00:08:13,470 --> 00:08:17,820 60 kilometers per hour speed and at this dot. 82 00:08:18,120 --> 00:08:24,510 So these are the operating most of the time our vehicles will run on. 83 00:08:28,670 --> 00:08:36,170 And during starting and certain operation really quite high to some operating point, will be there 84 00:08:36,170 --> 00:08:44,840 also, but most of the operating point will be around this portion and for a certain time, we also 85 00:08:44,840 --> 00:08:47,360 assume that a high speed also. 86 00:08:49,180 --> 00:08:56,710 So what we are interested in we are interested in this area and this on that give us idea that if our 87 00:08:56,710 --> 00:09:09,220 vehicle is going to drive in the urban driving cycle or in the city traffic, then it is going to operate 88 00:09:09,220 --> 00:09:12,510 in most of the time in this speech talk. 89 00:09:13,520 --> 00:09:16,890 Characteristics in this area and this region. 90 00:09:17,360 --> 00:09:25,340 So what is important is we need to select the electric motor and also we can design the electric motor 91 00:09:25,340 --> 00:09:31,620 such that it's the highest efficiency at this operating point. 92 00:09:31,640 --> 00:09:33,500 And this combination of speed and. 93 00:09:37,650 --> 00:09:44,750 If we compare the carbon cycle with the talksport requirement of the highways, then now we can have 94 00:09:44,770 --> 00:09:46,630 idea if this is a Mexican food. 95 00:09:46,710 --> 00:09:49,240 It is a Mexican thought then for the highway. 96 00:09:49,710 --> 00:09:53,160 Our vehicle is mostly. 97 00:09:54,850 --> 00:10:03,170 We run at this region for a longer time, and most operating flights will have at higher speed during 98 00:10:03,280 --> 00:10:03,910 starting. 99 00:10:05,260 --> 00:10:06,160 It will also. 100 00:10:07,390 --> 00:10:08,230 Essakane. 101 00:10:09,760 --> 00:10:17,380 Stable at last, but most of most operating quite well with high speed, so we are interested in this 102 00:10:17,380 --> 00:10:17,860 region. 103 00:10:18,130 --> 00:10:21,100 So selection of mortar as well as the. 104 00:10:23,200 --> 00:10:29,740 We can also design the electric motor, so if electrical engineer is studying the subject and they also 105 00:10:29,740 --> 00:10:35,080 consider the design of electric motor for this the roads, we are also going to discuss about the different 106 00:10:35,830 --> 00:10:37,980 characteristics of different motors. 107 00:10:38,050 --> 00:10:46,600 A selection of motor be made by each engineer is going through this code that we are going to discuss. 108 00:10:47,080 --> 00:10:51,700 One more thing I would like to add if electrical engineering is that. 109 00:10:53,380 --> 00:11:01,480 They will know that the we are covering the very high speed, higher r.p.m. up to more than 8000, 10000, 110 00:11:01,900 --> 00:11:07,900 because when we designed the electric motor for the high speed electric motor generally are waitress's 111 00:11:07,900 --> 00:11:15,930 better and we will have the smaller and compact sized motor designed for the higher speed, particularly 112 00:11:15,930 --> 00:11:17,510 in case of induction motor. 113 00:11:17,860 --> 00:11:27,490 But if we want to get less motor and we need to go for the the LDC and some special designed motor, 114 00:11:28,210 --> 00:11:34,750 and if you want the fixed gate system, then we can go to the induction motor and we can also design 115 00:11:35,350 --> 00:11:42,280 motor for the particular speed either gateless operation or the fixed gate operation. 116 00:11:42,580 --> 00:11:49,540 But currently we are considering high speed motor keeping in mind the application of induction motor. 117 00:11:52,470 --> 00:11:58,520 So, OK, you got the idea about our requirement for the hybrid driving cycle and possible requirement 118 00:11:58,790 --> 00:12:02,000 for the urban driving cycle of the vehicle is different. 119 00:12:02,240 --> 00:12:08,990 And it will USA Today about the selection of electric motor because the efficiency is most important, 120 00:12:09,300 --> 00:12:20,110 particularly in the electric vehicle, because we want the higher range and this is more important in 121 00:12:20,120 --> 00:12:24,200 case of electric vehicle it compared to AC. 122 00:12:31,030 --> 00:12:39,310 So if you summarize, it is important to understand our speed requirement of vehicle to optimize the 123 00:12:39,310 --> 00:12:44,170 vehicle performance and improve efficiency and range. 124 00:12:46,100 --> 00:12:52,760 It helps in selecting electric motors for particular reapplication, as well as in designing the electric 125 00:12:53,030 --> 00:12:53,540 motor. 126 00:12:54,140 --> 00:13:02,930 This is why and how we record the information about the speed requirement of the vehicle, and it is 127 00:13:02,930 --> 00:13:06,320 depend upon the driving and driving cycle. 128 00:13:06,340 --> 00:13:10,960 That means its application despite its top speed requirement. 129 00:13:10,970 --> 00:13:16,760 And accordingly, we need to select the electric, motor or electrical engineers can design the electrical 130 00:13:17,180 --> 00:13:18,380 motor accordingly.