Control Engineer -Battery Energy Storage Systems (BESS)

Larsen & Toubro; Bengaluru; On-site; INR 1,500,000 - 2,100,000; Full time

Job summary

Larsen & Toubro's PES - EPS unit is seeking a Control Engineer for Battery Energy Storage Systems (BESS) in Bengaluru. The role covers end-to-end control algorithm design for utility-scale and commercial/industrial projects, from concept and system design through validation and global deployment.

You will collaborate with PCS, BMS, EMS, and grid-compliance teams, implement real-time control on embedded platforms, and contribute to model-based development, SIL/HIL testing, and qualification

Qualifications

• 5–10 years of experience in control engineering for power electronics, grid-connected systems, or energy storage products.
• Strong proficiency in: Control system theory and practical implementation
• MATLAB/Simulink modeling and simulation
• Real-time or embedded control systems
• Solid understanding of inverter-based power conversion systems and BMS/PCS/EMS interaction
• Experience with SIL/HIL testing and real-time simulators
• Familiarity with industrial protocols CAN and Modbus
• Hands-on experience with utility and C&I grid-connected systems
• Knowledge of voltage and frequency regulation, grid-following and grid-supportive control
• Exposure to grid codes and regional interconnection requirements

Responsibilities

• Design, develop, and maintain control algorithms for Battery Energy Storage Systems.
• Interface with EMS, BESS controller, PPS and other equipment.
• Develop control strategies for grid services, renewable integration, peak shaving and energy arbitrage.
• Implement control functions on real-time controllers and embedded platforms.
• Lead SIL, HIL, and system-level validation.
• Support FAT, SAT, and commissioning activities globally.

Skills

Control theory

MATLAB/Simulink

Real-time control

Inverter power conversion

Battery interaction

BMS/PCS/EMS coordination

SIL/HIL testing

CAN/Modbus

Grid-connected systems

Voltage/Frequency regulation

Grid-supportive control

Islanding

Education

Bachelor’s or Master’s in Electrical Engineering

Tools

MATLAB/Simulink

Real-time simulators

CAN

Modbus

Job description

Job Title

Control Engineer -Battery Energy Storage Systems (BESS)

Location

Bengaluru, India

Experience

5-10 Years

Business Unit

PES - EPS

Segment

Utility-Scale & Commercial & Industrial (C&I)

Role Summary

The BESS Electrical Design Engineer is responsible for the design Control Engineering for BESS Product Engineering team for Utility-scale and C&I energy storage solutions. this role focuses on end-to-end ownership of control algorithms across the full product lifecycle—from concept and system design through validation, certification, and global deployment.

Key Responsibilities

Control System Design & Development

• Design, develop, and maintain control algorithms for Battery Energy Storage Systems, covering:
• Power and energy management
• Charge/discharge scheduling
• Voltage, frequency, and reactive power control
• Understand BMS design and stepControl Interface with EMS, BESS controller, PPS and other required Equipment’s.
• Develop control strategies for utility-scale and C&I applications, including:
• Frequency regulation and grid services
• Renewable energy integration
• Peak shaving and energy arbitrage
• Backup power and microgrid operation
• Implement control functions on real-time controllers and industrial-grade embedded platforms.

Data Analysis, Simulation & Validation

• Develop detailed control models using MATLAB/Simulink and equivalent tools.
• Support model-based development and auto-code generation workflows where applicable.
• Lead and execute SIL, HIL, and system-level validation to ensure robust control performance under:
• Normal operating conditions
• Grid disturbances and abnormal scenarios
• Fault and recovery conditions
• Analyse performance metrics and continuously improve stability, accuracy, and efficiency of control algorithms.

System Integration & Cross-Functional Collaboration

• Work closely with PCS (Power Conversion System), BMS, EMS, system architecture, and grid compliance teams to ensure seamless integration.
• Ensure coherent control behaviour across:
• Inverter control layers
• Battery and protection constraints
• Site-level and fleet-level EMS commands
• Support Factory Acceptance Tests (FAT), Site Acceptance Tests (SAT), and commissioning activities globally as needed.

Standards, Compliance & Product Lifecycle

• Design controls compliant with global grid codes and utility interconnection requirements.
• Support certification and product qualification activities for different regions.
• Contribute to product roadmaps, reuse strategies, and platform standardization initiatives.
• Create and maintain high-quality technical documentation, control specifications, and design review artefacts in line with OEM processes.
• Participate in design reviews, failure analyses, and continuous improvement initiatives across product generations.

Required Skills & Experience

• Technical Expertise: 5-10 years of experience in control engineering for power electronics, grid-connected systems, or energy storage products.
• Strong proficiency in:
  • Control system theory and practical implementation
  • MATLAB/Simulink modeling and simulation
  • Real-time or embedded control systems
• Solid understanding of:
  • Inverter-based power conversion systems
  • Battery operational limits and interaction with control layers
  • Coordinated control between BMS, PCS, and EMS
• Experience with SIL / HIL testing and real-time simulators.
• Familiarity with industrial communication protocols (e.g., CAN, Modbus).
• Grid & System Knowledge:
  • Hands-on experience with utility and C&I grid-connected systems.
  • Strong understanding of:
    • Voltage and frequency regulation
    • Grid-following and grid-supportive control strategies
    • Islanding, reconnection, and abnormal grid behavior
• Exposure to international standards and grid codes relevant to stationary BESS.

Preferred Qualifications

• Bachelor’s or Master’s degree in Electrical Engineering, Control Systems, Power Electronics, or related field.
• Experience working within a large OEM or global product organization.
• Knowledge of functional safety, redundancy, and fault-tolerant control concepts.
• Exposure to multi-site development, global product deployment, or fleet-scale energy systems.
• Experience supporting long-life infrastructure products with high reliability and availability requirements.

Professional & Behavioral Competencies

• Strong system-level thinking and analytical skills.
• Ability to work within structured engineering processes and quality systems.
• Effective communication with cross-cultural and cross-functional teams.
• Ownership mindset with focus on reliability, safety, and long-term product performance.