Harmonic Analysis Engineer for HVDC

Hitachi Energy Sweden AB; Dalarnas län; On-site; SEK 650,000 - 900,000; Full time

Benefits offered by this job

Collective agreement

Flexible hours

Wellness allowance

Global career

Mentor program

Training & education

Diverse workforce

Parental leave support

Employee discounts

Job summary

Hitachi Energy Sweden AB in Sweden is seeking two project engineers to join the Harmonic Analysis team within HVDC. You will perform harmonic studies below 15 kHz and support commissioning tests, evaluating compliance and proposing mitigation.

You'll develop tools in MATLAB, Python, and Excel to handle large data sets, and you will engage in technical discussions with customers and suppliers while writing clear technical reports.

Qualifications

• Degree in electrical engineering or related field.
• Foundation in electrical power systems and power electronics.
• Ability to model circuits in frequency domain.
• Experience with multi-phase system analysis using modes.
• Strong communication and report writing skills.
• Familiarity with MATLAB and Python is valued.

Responsibilities

• Conduct harmonic studies below 15 kHz for HVDC converter stations.
• Evaluate harmonic power quality requirements feasibility.
• Analyze small-signal stability in harmonic range for HVDC connections.
• Propose mitigation measures such as filters or dampers.
• Develop data analysis tools in Excel, MATLAB, or Python.
• Prepare clear technical reports and present findings.
• Engage in technical discussions with colleagues and customers.

Skills

Power systems

Frequency-domain modeling

Multi-phase analysis (modes)

MATLAB

Python

PSCAD

Technical report writing

English fluency

Education

Bachelor's or Master's degree in Electrical/Electronic Engineering or Engineering Physics

Tools

MATLAB

Python

PSCAD

Job description

The opportunity

HVDC (High Voltage Direct Current) is a product group within Hitachi Energy that develops, manufactures, and sells DC transmission systems on a global market. HVDC technology is used to transmit electricity over long distances and to connect offshore wind farms to the grid.

We are looking for two project engineers to join the Harmonic Analysis team within HVDC. We welcome applications from both entry-level and experienced candidates. If this opportunity interests you, we encourage you to apply even if you do not meet every requirement.

How you'll make an impact

• Collaborate in project teams responsible for the electrical system design of HVDC converter stations. Perform harmonic studies below 15 kHz and support compliance measurements during commissioning.
• Evaluate whether specified harmonic power quality requirements can be fulfilled.
• Analyze small-signal stability in the harmonic range when connecting an HVDC station to a network or wind farm.
• Propose active or passive mitigation measures, such as harmonic filters or harmonic dampers, when needed.
• Calculate harmonic stresses in HVDC station main circuit equipment and assess whether mitigation measures or redesigns are required.
• Develop tools in Excel, MATLAB, or Python to efficiently analyze and process large amounts of data.
• Participate in technical discussions and negotiations with colleagues, customers, and suppliers. Present your work and contribute to discussions on challenges and the path forward.
• Write clear and professional technical reports describing complex study work and results.
• Participate in conferences and standardization work groups within the international engineering community.
• Live Hitachi Energy's values of safety and integrity by taking responsibility for your actions while caring for your colleagues and the business.

Your background

• Bachelor's or Master's degree in Electrical Engineering, Electronic Engineering, or Engineering Physics.
• General understanding of electrical power systems and related equipment.
• Ability to model and analyze electrical circuits in the frequency domain, both by hand and using computer-based tools.
• Understanding of how multi-phase systems can be analyzed using modes.
• A practical approach to problem solving, understanding that models and calculations are estimates, that input data can be uncertain, and that technical requirements may need to be challenged and discussed with customers to find effective solutions.
• Strong communication and technical report writing skills.
• Programming experience in MATLAB is highly beneficial. Experience with Python is also valued.
• Experience with EMT tools such as PSCAD is advantageous.
• Fluency in written and spoken English.

What we offer

• Collective agreement
• Flexible working time
• Health care and wellness allowance
• Fantastic career possibilities within Hitachi Energy both within Sweden and globally
• Mentor to support you throughout onboard phase
• Various trainings and education supporting employee development
• Diversified company with over 70+ nationalities working in Sweden
• Supplementary compensation for parental leave
• Employee Benefit Portal with thousands of discounts and perks

Please note that applications will be reviewed by mid-August due to the summer vacation period.