Harmonic Analysis Engineer for HVDC

Hitachi, Ltd.; Ludvika kommun; On-site; SEK 600,000 - 850,000; Full time

Benefits offered by this job

Flexible working hours

Healthcare allowance

Career growth

Mentor program

Training opportunities

Job summary

Hitachi Energy in Ludvika, Sweden, is seeking two project engineers for the Harmonic Analysis team within HVDC. You will work on harmonic analysis, power quality, and electrical system studies for HVDC converter stations, collaborating across projects to integrate HVDC stations with grids and offshore wind farms.

We value an engineering mindset and a willingness to learn. Open to entry-level and experienced candidates; fluent English is required, MATLAB/Python experience is beneficial, and PSCAD

Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Electronic Engineering, or Engineering Physics.
• Strong understanding of electrical power systems and related equipment.
• Ability to model and analyze electrical circuits in the frequency domain, by hand or using tools.
• Effective communication and technical report writing skills.
• Fluency in written and spoken English.

Responsibilities

• Collaborate in project teams on the electrical design of HVDC converter stations.
• Perform harmonic studies below 15 kHz and support commissioning measurements.
• Evaluate whether harmonic power quality requirements can be fulfilled.
• Analyze small-signal stability when connecting an HVDC station to a network or wind farm.
• Propose mitigation measures and discuss with customers and suppliers as needed.
• Develop data analysis tools in MATLAB, Python, or Excel to process large data sets.
• Present technical results and participate in discussions on challenges and forward path.
• Write clear technical reports detailing study work and results.

Skills

Power systems

Engineering problem solving

Technical report writing

English fluency

Education

Electrical Engineering degree

Tools

MATLAB

Python

PSCAD

Job description

Location: Ludvika, Dalarna County, Sweden

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.

In this role, you will work with harmonic analysis, power quality, and electrical system studies for HVDC converter stations. You will collaborate across projects and contribute to the successful integration of HVDC stations with electrical networks and offshore wind farms.

The most important qualities for this role are your engineering mindset and your willingness to learn and explore new areas.

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 nations working in Sweden
• Supplementary compensation for parental leave
• Employee Benefit Portal with thousands of discounts and perks