Questions tagged [electric-vehicle]
Electric vehicles (EV) use electric motors rather than combustion engines for propulsion. The source of energy may be internal (such as from batteries or solar panels) or external (such as an electrified rail).
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Using home EV charge point to power Christmas decorations (UK)
I have a home EV Charge Point I am not currently using to charge a vehicle. I want to be able to use it as an outside power source for an electric mower or to power outside Christmas lights. Is this ...
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DANA IPM motor not working
I have a DANA TM4 IPM 6kw motor and its not running.
The controller that I have is supplying 20A, 20A and 45A (approx) when put in reverse, forward and boost mode respectively.
The motor jitters (...
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Will the efficiency of PMSM motor increase if it is rewound for high voltage keeping everything else the same?
The background is:
I have to redesign a 10.8 volt DC-battery supply, PMSM 3-phase motor to work with 24VDC. I can only rewind the current motor and adjust it to 24VDC.
The motor is rated for 550 watts ...
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Electric moped PWM MOSFETs failure
I am back with my PWM moped project. Here is a link to my previous question if you're interested:
Advice about power MOSFET layout and heat management
Here is a quick summary of my circuit along with ...
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Voltage Response of Equivalent 1-RC Model for a Lithium Ion Cell
Context: While studying Equivalent Circuit Modelling of Li-Ion cells, I came across a rough approach to approximate the model parameters. My source is this (Refer Book Page 39 in sample) The model is ...
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What is the essence of frequency in DC circuits?
While studying equivalent circuit models for lithium-ion battery packs, I came across the topic of Warburg Impedance. A paragraph from my source (Book Page 40 in preview) goes as follows:
In the ...
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How do traction inverters behave during regenerative braking?
I have been wanting to know exactly how regenerative braking works in an electric vehicle (3 phase) motor. It's hard to find details about it on the internet.
Recuperation utilizes the body diodes of ...
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Can I use two SCRs instead of the relay in an EVSE charging station?
I'm designing an 11.1 kW AC EVSE, and the conventional architecture is to use a relay to allow current flow to the electric vehicle's onboard charger. However, I was considering replacing the relay ...
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Charge EV from array of small solar panels DC/AC
Suppose I have 20 solar panels specified to yield 18V, 40-80W.
What would be the best (most efficient, non-damaging) way to use this to charge an EV, if possible?
Note that it doesn't matter for me ...
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Not able to understand S2-5’ in IPM motor datasheet?
I am working on an electric go-kart, the only specs of the motor I have are:
Motor type: IPM,
Operating voltage: 48V,
Nominal power: 6kw,
Peak Power: 8.5kw,
Peak motor torque: 42Nm,
Max rpm: 6700,
...
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How does the PWM protocol work in AC chargers for electric cars?
I'm trying to design an AC charger for electric vehicles. They don't seem to be a big deal in terms of electronic design, but I can't understand how the CP and PP signals work in these devices. So far,...
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Number of solar panels to power a level-2 EV charger
I am working on a project for my intro to engineering class. We are theoretically designing a EV charging station powered by solar panels. I found an example level-2 charger that says it is 9.2 kW at ...
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Electromechanical solution for opening the charging port of electric vehicle
Below image shows the charging port of my ev. Currently if I want to charge the vehicle I will manually open the port cover(the white color one in the image).
My intention is to place a switch in the ...
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What happens to the motor when the car is in "D" drive mode with brakes held on? [closed]
Typically the electric cars do not have clutch or gearbox. This means that for short periods the car be stopped with brakes (hand brake or foot brake) while the car is in "D" (for drive) ...
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EV charger connector identification
I am building a portable EV charger demo for conferences, and for transportability reasons, I need the charger cable to be removable. Have you ever seen that connector?
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EV charger individual cable insulation
Are the internal conductor strands inside the Level 1, level 2, level 3 EV chargers bare or do they have a coat of insulation? I know the conductor strands combined as a wire have a sheath of rubber ...
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What’s this PCB that interfaces with the USB CarPlay connector of the Ioniq 5 / EV6? [closed]
As with several owners of the Hyundai Ioniq 5 and the Kia EV6, I’ve been having intermittent issues with the USB CarPlay functionality. It worked fine when the car was new, but after a few months the ...
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Shutdown circuit of an EV gokart
My student project team is planning to build an EV gokart. It's supposed to have a shutdown circuit/kill switches. I was planning to implement a DC contactor/high power relay to connect/disconnect the ...
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Choosing Contactors for an EV Battery Pack
I’m designing a battery pack and am uncertain about which contactor to select. Many electric vehicles (EVs) use three contactors: one each in the positive terminal, negative terminal, and precharge ...
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Charging li-ion 72V with solar MPPT controller [closed]
I have an EV 72V li-ion battery with given charger (peaks at 11 A).
My MPPT solar charger is designed among other types for li-ion up to 96V ie 12/24/36/48/60/72/84/96V settable at 72 V. 50 A max.
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Two motor controllers in parallel
Can I, when connecting two inverters (motor controllers) in parallel, control each current independetly? Also is it possible to charge a battery trough a inverter (motor controller) with both inverter ...
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Read voltage (isolated circuit) from 24S Li-ion battery pack and output 0-5 V signal
I am finishing up a EV-conversion and everything works well except the SoC display.
The BMS I am using outputs 0-5 V to indicate the SoC but the output pin for this signal is broken from the previous ...
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What is the difference between Electric Vehicle Charging Infrastructure (EVCI) and Electric Vehicle Supply Equipment (EVSE)?
I'm just getting involved in the EV charging in a professional capacity, and I'm having trouble finding an authoritative answer on the difference between supply equipment and charging infrastructure. ...
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DC-DC buck converter's MOSFET or IGBT?
Motor Specifications:
Rated power: 50 kW
Rated voltage: 200V DC
Rated current: 250A
Battery Specifications:
Nominal voltage: 400V DC
Capacity: 50 kWh
Design Requirements of the DC-DC Converter
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Does the RCD go before or after the MCB?
I am going to connect a 4 pole RCD and MCB to the input of a power supply. Which one should I connect first, the RCD or the MCB? I have seen them connected both ways.
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How long would it take a 400 W solar panel to charge a 28 kWh EV battery?
I'm located in The Gambia which is almost on the equator. We get over 11 hours of sunlight on Dec. 21st. Being a tiny country, daily travel is minimal, at most, maybe 28 km. If I place a 400 watt ...
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If the chassis is at high potential and a human touches it, will he get shocked? The proposed circuit is for the cancellation of CM current
This circuit is compensating the potential difference between the chassis and motor so the bearing current or leakage current cannot flow from motor to chassis to ground.
If the chassis is at a high ...
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Small Fuse for 600VDC with 6kA interrupt current
I'm looking for a 0.1A - 1A Fuse for a 600VDC system with an interrupt current rating of at least 6kA.
I found some fuses like the TC-632414, which would fulfil the criteria, but they are quite big.
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How EV chargers know the battery's charge level? [duplicate]
I know charging station generates 1kHz PWM to set charging current - even Wikipedia has nice explanation how to use it. But that is only communication protocol I can find. I did notice some charging ...
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Power Meter current (for EV charging)
I would like to charge an EV at 10, or even 15A through a GPO that has a power meter attached.
The meter states 5(45)A, and
Rated Current (Ib ) 5 A
Maximum Rated Current (Imax) 45 A
So, will a ...
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CAN protocol for communication between EV and Charging equipment
I am trying to understand (and hopefully build) DC fast chargers (GB/T) for electric vehicles, specifically the communication between the Electric Vehicle Supply Equipment (EVSE) and the electric ...
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How does EVSE gets the SoC of a vehicle in Level 1 and Level 2 chargers, Type2 Gun(IEC62196-2)?
Type2 gun does not allow full-fledged communication between the EV and EVSE, Electric vehicle can only tell the EVSE what state it is in through the control pilot. is it possible for EVSE to share SoC ...
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IEC 61851 - reason for minimum current?
I would like to understand the reason for the minimum charging current of 6 amps. This poses a serious limitation for people with charging stations and smaller solar installations. While they may have ...
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Simple way to achieve constant output current from a boost converter for battery charging in an EV penetration simulation study using EMTP simulation
I am simulating Level 1 and Level 2 EV chargers to test the impact of such chargers on a grid in a developing country. I am simulating in EMTP-RV (software for simulation and analysis of power systems)...
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BQ2054: Studying the impact of high-current charging EV Li-po batteries at high C-rates and most common charging methods used
I am trying to replicate the charging method of fast-charging stations for electric vehicles using one or two Li-po cells. The purpose of the experiment is to measure the impact of high C-rates on Li-...
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How does an electric vehicle determine how much current to draw from a 230 V mains socket?
I was talking with an electrician doing some basic wiring at my house and mentioned that I'm getting an EV. He told that his relatives came to visit and wanted to charge an EV at his house. He had ...
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How to dynamically simulate an EV plug disconnection in order to automate charging power setup
I bought a well-made Chinese charger for our Zoe ZE50 R110 electric vehicle.
It can be set to various charging levels (8,10,12,16A at 220V), but as a safety (I guess), the procedure requires me to ...
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how do i make 384 volts at 200 amps or 80kw from a lower voltage battery source with a transformer [closed]
this is to completely replace my 2012 Nissan leaf traction battery. with a transformer.
methods I've considered.
-dc to dc boost converter
-power inverter
-voltage multiplier
-some type of unknown ...
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What is the relation (equation) between mileage output and charging frequency of an electric vehicle? [closed]
What is the relation (equation) between output mileage (km/charge) and charging frequency (how many times an electric vehicle is charged in a day) of an electric vehicle?
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15A 125V smart plug being used to slow charge electric car [closed]
So my car is using a charger that from what I'm told is both level 1 and level 2 capable. What I'm getting from the car is that its slowly drawing 8A continuously untill charged. The plug I have in ...
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Lithium 72V (2x 36V series) charging with double 36V charger for ebike project [closed]
Edit1: Voltage is wrong but here is a basic wiring diagram for a parallel to series changeover switch I found on internet closest to what I want.
I want to 2 36v battery packs in series. I know that ...
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