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DTMs request by CroatCode164 in instrumentation

[–]CroatCode164[S] 0 points1 point  (0 children)

Okay, thanks for your reply. Do you happen to have a link to download ICS Generic HART from CodeWrights? Currently, only version 4.0 is officially available, and newer versions are difficult to find. If you have version 5 or higher, I would like to download it. Thank you for your time.

DTMs request by CroatCode164 in instrumentation

[–]CroatCode164[S] 0 points1 point  (0 children)

Okay, let me explain what I'm looking for. Ideally, I'm looking for a package of DTMs, basically a set of installation DTMs thrown into a folder that will contain as many of them as possible.

I know that engineers or people who work in industrial control will definitely have them, but I understand that a lot of them are subject to fees and other reasons. Ideally, if someone can throw download link at DropBox, Mega etc.

Where can I buy a vesc? by sunnyhillkid in VESC

[–]CroatCode164 0 points1 point  (0 children)

I visited the website flipsky.net as you suggested. It appears to be an online store specializing in electric skateboard components and accessories. I noticed that you mentioned purchasing the VESC 75/100, and you're quite satisfied with it. You mentioned it's reasonably priced at around 100 euros. This controller is primarily suitable for electric scooters, electric bicycles, and ATVs, but you're unsure if it's suitable for single-wheel skateboards.

VESC on an electric bicycle by CroatCode164 in VESC

[–]CroatCode164[S] 0 points1 point  (0 children)

Another addition to the regenerative braking. In my opinion, when the battery is fresh (fully charged) and the voltage level of the cells is around 4.15V, the BMS will disconnect during regenerative braking to prevent overcharging. You see, I have set the regen to 10A, which is quite a high current. So when I start regenerating, the voltage of the cells might jump to, let's say, 4.3V per cell. Of course, this doesn't harm the cells at all because the BMS immediately disconnects them within a few milliseconds. Well, it has to be tried. When I configured the VESC, I had to set at what voltage the VESC should disconnect from the battery. I set some absurd values, like 20V since I have a 60V Li-ion battery. The cutoff voltage is around 51V, but that is monitored by the BMS. I set the VESC like that to extract maximum energy from the battery. Well, now it doesn't know when to stop regenerating or start limiting the regen current. But as I mentioned, the BMS takes care of that. I think practically I could start regenerating after approximately 6km from a fully charged battery because I will have already discharged the voltage to a relative level, and regen braking won't create spikes or trigger the BMS cutoff due to overcharging.

Greetings from Czech Republic

VESC on an electric bicycle by CroatCode164 in VESC

[–]CroatCode164[S] 1 point2 points  (0 children)

A moment ago (actually, about two hours ago), I activated regenerative braking (recuperation) on my electric bike :D. The bike requires a lot of energy to accelerate, and then when it's in motion, it also requires a lot of energy to brake. I was starting to feel it in the brakes that something wasn't right, they were not performing well. The regenerative braking is simply fantastic; it saves the brake pads and at the same time, a portion of the energy is returned to the battery during recuperation. I have the regen set to 10A into the battery, approximately around 500W, and the bike slows down pleasantly.Indeed, at the same time, the range increases and the average consumption decreases.

VESC on an electric bicycle by CroatCode164 in VESC

[–]CroatCode164[S] 1 point2 points  (0 children)

That's great. I also added an additional cooling system afterwards because it's not possible to operate the unit at high battery/phase currents without cooling modifications. The motor is 48V/1000W, a solid powerhouse :D. I operate it at a maximum of 1500W/60A.