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Propdrive 42-48 650 Kv motor 70 Amp ESC rated to 7S 6S, 4AH, 30C battery AR6200 receiver Spektrum DX7 transmitter Assuming a fully charged battery at 25 Volts the expected current draw was about 44 Amps (Ecalc). The actual current was about 32 Amps annd the rpm was baout 12,00 compared to the calculated value of about 13,800, well under estimates.
The motor will *try* to draw enough current to perform that mechanical work, which determines how much current is flowing from the battery through the ESC. This in turn determines flight time based on battery pack size.
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Discussion Confused about current draw in battery-esc-motor chain Electric Power Systems
Hey there, I''m on arducopter 4.5.7, using hobbywing motors, connected via CAN to get back esc telemetry. I''m able to see each full telemetry data like motor rpm, voltage and current. The battery monitor sensor param set to “9” (ESC). In GCS it perfectly show total current, watts, voltage, but total consumed is missing.
There is no need to use an ESC rated for the motor max current if the actual current is a lot less. And you would not want to run a 198g motor at 80A on 3S let alone 4S anyway - 60A would be a more reasonable peak current. I believe the more simplistic guidelines recommended by the thread "Help w/motor, esc & battery combo" under "Electric
Here is how I test voltage or current to the ESC or individual servos. I use a watt/voltage/current meter (every RC guy should have one of these). These are built to test the watts/voltage/current from the battery to the ESC. I built an adapter that has servo plugs on one end and battery/ESC plugs on the other end.
Working voltage of the motor is decided by the ESC, whilst the voltage of ESC is decided by the output of batteries. Hence the total voltage of
The motor controls (without getting into details here) how much current it will pull. The ESC controls for how much percent of time that current will go to the motor. So, if you are at half throttle (roughly) with the motor and the ESC you have, the ESC connects the battery to the motor for half the time.
I''m going to be running two 500 motors connected to one ESC, 2. my battery power will be 12v, 3. therefore, each motor has a 2.7amp load with a stall 21amp, 4. each ESC current at double the load amp 5.4, = 10 amp controller, 5. but because i have two motors on one esc, a 20amp controller will be required, 6. Will a 15 amp fuse to protect the esc?
A battery does not push electrical current ( amps ), amps are drawn by the motor & prop . The prop determines the amount of amps drawn ( load ), if the load is higher than the battery/ESC can deliver.. that''s when heat & damage will occur . If only the ESC was getting warm ( and not the motor or battery ), replace it with a 40A ESC .
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Question Battery, ESC, and Motor Current Flow Electric Power Systems
Hi, I am new to this hobby. I have 1 battery 1 ESC and 2 Motors. Could you please recommend to me which of the 2 motors is appropriate? Battery: 600 mAh 50c/100c 2S1P 7.4v 4.44WH On motor 2 you could use a 6x4 prop to get about 500g of thrust drawing 12A of current. On motor 1 you could use a 9x5 prop to give about 540g of thrust at 11A
Because the motor voltage is always lower than the battery voltage, but the power is the same, then the current is higher. If the controller PWM was 20%, then the motor
What wire gauge should be used for esc''s and motors. At moment, I''m just using 540 motors but not sure which cable to purchase in terms of 10, 12 or 14 gauge. I''m also looking at colour coding (red/black) esc to battery and (yellow/blue) esc to motor Any advice greatly appreciated. Declan
I was using lead acid to test the brush less motor. I measured the current passing through the ECS and it is always bellow 3A. The lead acid battery is 2.2P LEAD-12V PANASONIC( LC-R122R2P). The driver was 40A brush less motor driver. The motor was a 1400kv. I have tried to connected 4 lead acid battery in parallel. But, it gives a similar result.
The same terms apply for phase current (simply replace "battery" with "motor"). The actual battery current and actual phase current are constantly changing according to riding conditions. The relationship between actual battery current and actual phase current is not fixed, it is also constantly changing according to riding conditions.
The esc uses PWM modulation to adjust the motor current, this means that the transistors is on for a portion of time and off for the next, this happens really fast. So battery current = motor current * duty cycle, and duty cycle is roughly proportional to motor speed. 15 Likes. glyphiks October 6, 2019,
If battery operates under the maximum current, the life of battery will be shortening. Propeller: For propeller, take 1045 as an example, “10” means the diameter and “45”
SPS Safety Power Switch 70V 100/200A Battery / ESC Isolator A72011 from Emcotec IRC Electronic safety power switch for electric power systems. The SPS SafetyPowerSwitch separates the motor from the battery. The electric
Solution I: Keep battery wires short, lengthen the ESC-motor wires. That''s hardly critical because there''s already a lot of wire in the coils in the motor itself. If the motor-ESC wire eventually gets too long, it will not harm motor and/or controller. May cause interference though, give the motor-ESC wires a twist. Always a good idea to do
Outcome 1 - Current to the motor stays at an average of 40A, due to PWM peaks of 80A (troughs of 0). Outcome 2 - PWM peaks of 40A are seen, but due to the 50%
Get a esc thats rated HIGHER then the motor. Get a battery that can handle the amp demand and then some. EXEMPLE: Without knowing the amp draw frmo the motor and prop combination you can get a esc rated for higher then the max amps of the motor. If you motor is rated for 50A MAX then get a esc rated for higher. Simple really.
Here''s the numbers using your motor, prop and ESC: min. Flight Time: 2.7 min Mixed Flight Time: 6.4 min Current: 41.26 A Voltage: 9.95 V Revolutions*: 18567 rpm electric Power: 410.5 W est. Temperature: 185 °F You would be over-current on the ESC and over-watts on the motor, and you''d still only get 2.7 minutes at max throttle.
if your battery can do 100a and you have 2 motors, you want the battery current limit on each vesc to be 50a, but you can safely set the motor current limit higher.
So the current drawn by the motor is a function of the applied voltage and the load being spun. In the case of an ESC controlled motor, the applied voltage is the battery voltage multiplied by the duty cycle of the PWM signal applied to the winding by the ESC, where the duty cycle of the PWM is determined by the Throttle position.
Looking at this a slightly different way. Say you were running a motor/prop on a battery that can barely cope with the load. Its voltage will drop quickly to say 3.3V/cell. The current it can (just) deliver based on that voltage may be OK for the motor and ESC. Get a brand new same cell count battery, but more capacity, higher C rating.
ESC''s typically have some sort of motor limit (in kv or turns), which you need to adhere to. If the ESC specifications says that the motor limit is 8.5T on a 2S battery, then you must use a
Most batteries are series devices. 50c is current, the nominal voltage applies to only the battery (example a lead 12v battery is described as a 12v battery charged 13.8 or dead 10v this is ''nominal voltage''), a specified
But having long esc to motor wires increases electromagnetic interference greatly due to the AC power running to the motors. IE you can probably extend the power wires to the esc without any issuse (i''ve done it without a problem). The wires from battery to the esc are carrying DC current. For a given amount of power transmitted, the line
Proper Sizing: Always select an ESC with a higher current rating than your motor requires to handle sudden power surges without overheating. An ESC rated at 20% to 30% more than the motor''s maximum current draw is a good rule of thumb. Adequate Ventilation: Ensure that your ESC is well-ventilated to prevent overheating. Take into account
The batteries should be rated for the same or higher (continuous) current than the ESC, which should in turn be rated for a significantly higher current than the motor. The rule of thumb is: Never draw any more current than whatever you're drawing it from can supply. Also, motors can draw more current than they should.
Chose a battery with higher current rating than the peak current draw of the motor. The ESC can be selected based on the voltage and the peak current rating of the motor. A simple rule is to choose an ESC with atleast 5A more capacity than the peak rating of the motor, since you may be powering servos, receiver and other accessories from the ESC.
1.Battery voltages should not be higher than the maximum voltage that ESC can suffer. 2.Continuously output of battery's current need to be bigger than the ESC's. Working voltage of the motor is decided by the ESC, whilst the voltage of ESC is decided by the output of batteries.
Working voltage of the motor is decided by the ESC, whilst the voltage of ESC is decided by the output of batteries. Hence the total voltage of batteries must be equal or less than the maximum voltage of motor. Maximum voltage of ESC should not be higher than what the motor can suffer. Current in ESC is larger than motor.
It may draw up to ~5 times higher current at startup or when a load is initially applied, but ESCs are usually rated to handle these momentary current surges. The ESC should always be rated to handle whatever current the motor draws at full throttle (100% PWM).
ESC Most brushless ESCs will run pretty much any 3 phase brushless motor so long as it doesn't draw too much current or spin too fast. Your ESC is rated for operation at 6-12V, which suggests that you could use a 7.4V or 11.1V Lipo battery.