u/Cautious_Bread7765

Hi everyone, I am currently doing my first summer internship.

I am designing a power supply circuit that takes 230VAC grid power, steps it down to 24VDC, and uses a single supercapacitor as a backup power source.
The goal is to keep an isolated DC-DC converter running during brief power outages (it needs to deliver power for at least 5 seconds).

I would highly appreciate any comments or feedback. Since I am a beginner, there is probably a major flaw somewhere in the circuit! Thanks in advance.

Here is my current schematic diagram:
IC (1): BAC10S24DC (AC-DC Converter)
IC (2): RS3K-2424SZ/H3 (Isolated DC-DC Converter)

Circuit Overview: Primary Stage:
1.A 230VAC to 24VDC AC-DC converter module (1) provides the main power rail.

2.Charging Stage: A Step-Down (Buck) converter steps down the 24V rail to charge a single-cell supercapacitor through a current-limiting resistor .

3.Backup Stage: When the grid goes down, a Step-Up (Boost) converter takes the supercapacitor voltage, boosts it up, and feeds it into the main rail through a blocking diode.

Output Stage: The main rail goes through an EMC filter into an DC-DC converter (2) whit a input range (9V–36V), delivering a regulated 24V @ 125mA , Pout=3W

https://preview.redd.it/81ml7c1qovah1.jpg?width=4096&format=pjpg&auto=webp&s=5419bef3ad19ec82b654a5be259f2f826ba83bf4

Hi everyone, I’m a student from Portugal, currently heading into my 3rd year.

Since starting my degree, I’ve always felt drawn to hands-on work ,where I can actually deal with physical electrical issues on-site rather than a design role where I'd spend most of my day in an office.

With this in mind, I started looking into positions like Commissioning Engineer or Field Electrical Engineer, where I can get that practical experience (at least, based on job descriptions and what people in the field say).

However, I know this kind of work is great while you're young and full of energy. When you get older and start looking for stability or wanting to build a family, the constant travel and rotation might not be ideal.

Given this, is field experience actually valued later on if I want to transition into Design roles? Additionally, due to some personal situations at home, I really need to get away and clear my head for a bit, so the travel aspect of this job aligns well with what I need right now.

Should I jump straight into the job market right after my Bachelor’s, or should I make the effort to finish a Master’s degree first before pursuing these roles?"

Hi everyone, I’m currently going to the 3nd-year of Electrical and Engineering.

My career goal after graduating is to move into practical, on-field roles, specifically targeting positions like Commissioning Engineer or Field Electrical Engineer.

To gain some experience, I want to do a summer internship this year, but I'm torn between two very different offers:

Option 1: Focusing on low, medium, and high voltage network design, electrical substation design layout, technical coordination of energy projects, AutoCAD, and learning regulations.
The catch, I spoke with a professor who teaches Power Systems at my Uni. He warned me that since I'm only in my 2nd year, I haven't taken the relevant courses yet (they are 3rd-year subjects). He mentioned that covering all of this in 3 months is impossible, so I would essentially be starting from zero just to learn basic concepts, perhaps focus only on Low Voltage.

Option 2: Hardware / Power Electronics
Developing a voltage and current data acquisition board for 3-phase grid-connected inverters. Circuit simulation in SPICE , PCB Design (80h), and experimental validation.
Although I still need to learn a lot about Power Electronics, I feel much more comfortable here. I've already passed Circuits I & II (AC/DC analysis, transients) and Electronics I (Op-amps, Filters, MOSFETs, BJTs, AC rectification).

Would love to hear some feedback from people working in the field or older students! Thanks!

Tenho estado atento a algumas vagas de Commissioning ou Field Electrical Engineer na Siemens Energy.

Queria saber se alguém tem algum feedback/input sobre este tipo de trabalho, o dia a dia, e se tem um bom salário.

Falta-me 1 ano para terminar a LEEC e estou à procura de uma cena mais prática. Este trabalho, pelo menos pela descrição, pareceu-me ideal. Queria saber se algum fellow tuga já teve esta oportunidade e se me podia falar um pouco mais sobre o seu dia a dia.

Tenho estado atento a algumas vagas de Commissioning ou Field Electrical Engineer na Siemens Energy.

Queria saber se alguém tem algum feedback/input sobre este tipo de trabalho, o dia a dia, e se tem um bom salário.

Falta-me 1 ano para terminar a LEEC e estou à procura de uma cena mais prática. Este trabalho, pelo menos pela descrição, pareceu-me ideal. Queria saber se algum fellow tuga já teve esta oportunidade e se me podia falar um pouco mais sobre o seu dia a dia.

I am currently a 2nd-year Electrical Engineering (EE) student based in Portugal, aiming for the European power sector,specifically targeting major players like Siemens Energy, Hitachi Energy, and GE Vernova.

My academic and personal interests lie at the intersection of power electronics and large-scale grid infrastructure. Specifically, I am fascinated by the design of power converters (AC-DC, DC-DC, DC-AC) and the hands-on aspect of field commissioning and grid connection work. Is there any specific role that has these two things?

I am currently a 2nd-year Electrical Engineering (EE) student based in Portugal, aiming for the European power sector ,specifically targeting major players like Siemens Energy, Hitachi Energy, and GE Vernova.

My academic and personal interests lie at the intersection of power electronics and large-scale grid infrastructure. Specifically, I am fascinated by the design of power converters (AC-DC, DC-DC, DC-AC) and the hands-on aspect of field commissioning and grid connection work. Is there any specific role that has these two things?

Yo, recently I had the opportunity to learn more about power systems, particularly power electronics. I really enjoyed how it involves so many different fields: electric machines, electronics, control systems, and physics (like electromagnetic interference, shielding, etc.).

But there is one key aspect I need in my work, I want to do technical, hands on stuff rather than just sitting at a desk designing converters all day, which is what I'm afraid of. My ideal job would be a 50/50 split between desk work and field work.

Also, I’d love to work across all three aspects of the system not just the converter itself, but also the connection to the grid and the power flowing into the converter. Is that actually possible, or do you usually have to focus on just one thing?

That’s all, thanks for the input guys!

Boas malta.

Como estudante de eletrotécnica , uma das coisas que gosto de fazer é pegar em eletrodomésticos estragados e arranjá-los.

No entanto, é raro as vezes que faço isso porque tenho acesso a pouco equipamento.

Dito isto , há alguma forma de obter estes eletrodomésticos ,mesmo que seja pagar alguma cena ?

Boas malta, queria saber um pouco da vossa opinião sobre essa malta com trabalhos técnicos a tirar milhares por mês.
Ainda há pouco apareceu um post no PT Ordenado de um mestre de obras a sacar 5000 a fazer biscates.