SESC a VESC 6 derivative

In fact, when used in FoC mode, there is no need for sensor connection. So I left points only in case someone was using it.

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We see very differently. There is a difference between sensored FOC and unsensored FOC.

There’s a good majority of people like myself that won’t run boards without sensors, becuase there is a performance difference. FOC isn’t a solve all…but atleast you have left the pads available

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I am out of this topic the guys really has like 0 knowledge about VESC :smiley: or ESC in total :slight_smile:

@secupol ADC doenst run constantly there is delay in between current readings :wink: At those brakes you can even consume 500A if motor wants as you have direct connection to battery through open mosfet :wink:

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Your proof is groundless. Can you prove it with a formula?

So if the current flows, everything will melt.

Additional explanation Let’s see what happens when 500A flows, whether it’s a break or not.

  1. The shunt resistor of the VESC6 is directly connected to the motor. Therefore, the rated power of the shunt resistor is obtained as follows. P = VxI = I ^ 2xR, 500A depending on your horse, P = 500x500x0.0005 = 125W The rated power of the shunt resistor used in the VESC6 can not exceed 10W.

The maximum current that can flow through a shunt resistor with a rated power of 10W is: Imax = √ (10W / R) = √ (10 / 0.0005) = 141A

  1. If the motor current is 500A, the battery current is approximately. Below Ibat = Imotor / √ 3= 500 / 1.732 = 288A How many of them should be made in parallel to make this possible?
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The main design directions of SESC are as follows.

  1. Add a TVS diode to prevent the high voltage from the motor causing all breakdowns.
  2. Using a new gate driver to reduce PCB size and using a type of Aluminum Organic Polymer capacitor for a link capacitor.

If you want to know the difference between ordinary aluminum capacitors and aluminum organic polymer capacitors or how they differ in performance, please refer to the link below.

http://www.rubycon.co.jp/en/products/topics/t005.html

If there is an error in the above comparison, please let us know.

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few corrections.

I like your layout :+1:

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I know that used a TVS diode on the input side. However, it does not generate a high voltage that is actually problematic at the input side. Most of the problems are caused by the motor side. So there was a problem with DRV8302 in VESC4. But I do not know if the DRV8301 of VESC6 is causing any problems.

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What does @professor_shartsis say about this? He’s good with formulas, got all kinds for esk8 calcs.

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Well, there goes the thread

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And from this I see this version uses a hardware implementation instead of SPI for the DRV8323.

SESC Test Duty : 95% VESC Limit : 60,000ERPM Result : About 58,000ERPM

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But VESC 6 only has a limit at 150.000 AFAIK :thinking:

The 60.000 limit was from the 4.12 era. I like the small size though. looks very compact

How can I give more than 60,000ERPM input? It is always limited 60,000ERPM in VESC tool

You need to flash with non-default no H/W limit F/W afaik image

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Thank you. First, I need to fix the firmware. Because the hardware is different.

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It was flashed to no hw limit fw binary. but it is still limted to 60000erpm… maybe it’s problem of VESC tool app

Run in foc, the fw limits will not apply. Other limit could be from your motor, you need a high kv high pole count motor.

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It’s running in foc and motor have 280kv, 14pole It’s enough

Power supply voltage 30-36V?

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36V/200W power supply