Dr. Suresh Reddy: Engineering Leader in Electric Power Generation Systems & Microgrids

Fronius Primo Gen 24 Solar inverter & Gen 24 Plus hybrid inverters

7.7 kW/10 kW (solar/hybrid)

3.8 kW/5.0 kW/6.0 kW (solar/hybrid)

Back up Unit

External Battery

Electric Power Generation Systems & Microgrids

Control/Optimization, Renewables Integration, Energy Storage Systems, Fuel cell systems, Power source inverters, back up & UPS power solutions

CAT® MMC-S

CAT® ECS-400

EMCP

ECS-200

CAT® Microgrid Controllers

CAT® Genset Controllers

CAT® Energy Storage Systems (ESS) & ESS inverter

Heavy Duty (HD) mobile & Stationary versions (1 MW+) Power Grid Stabilization (PGS) & Energy Time Shift (ETS)

BDP1000 (1 MW inverter)

Flexible Variable Speed Genset System concept

CAT® Genset

(Example)

(Example)

(Example)

Solar Inverter

Solar Panels

CAT® Fuel Cell back up power demo for data centers

Areas of experience/expertise:

• Microgrid Control Systems

• Battery and fuel cell back up power systems, and control

• UPS systems with power quality, and control

• Energy Storage systems, and control

• Renewables, e.g. solar

• Genset systems and control - constant and variable speed

• Generators, power electronics and controls for variable speed gensets

• Energy storage, solar inverters, and control

• Cooling systems for charging and energy storage systems

• Power and load management optimization

• Renewables and load forecasting

• Control interfaces

• Solar back up solutions

• Compliance: UL1741/IEEE1547, UL3141, Sunspec

• Modeling and simulation of systems and control

• Software In the Loop/Hardware In the Loop (HIL) verification/validation

Relevant Experience (at Caterpillar Inc, Fronius USA)

Tech leadership/execution/strategy for several development phases:

• CAT's first proprietary microgrid controller, MMC-S architecture, and control requirements, software development, deskop/HIL simulation, validation and release for field units

• CAT's MMC-S interfaces to controllers of gensets, solar and energy storage inverters; Genset EMCP software enhancements

• CAT's MMC-S improvements, and oversight during NPI deployment

• CAT's next generation microgrid controllers, ECS-400 architecture, specifications, and oversight of control/software development

• CAT's concepts for optimization of energy/power dispatch and battery electric vehicles and static/dynamic charging systems at a work site

• Back up UPS power concepts and leadership during technology development phase

• Variable speed genset concepts/configurations, and internal demonstrations with a C-32 and C-15 genset, with different power electronics developments

• Concepts for fuel cell/battery hybrid back up power for back up and power quality/UPS, DOE proposal support for data center back up power, leading to award and demonstration

Tech oversight for several development phases:

• CAT's 1 MW energy storage system and its inverter system concepts, NPI issues tracking/resolution oversight

People/program/tech leadership for several development phases:

• Fronius essential back up load unit development, design improvements, design partner collaboration & manufacturing selection

• Fronius inverter software concept/specification for interface with whole home back up unit & internal/external team collaborations

• Fronius Gen24 solar and hybrid inverter software development, validation and certification for IEEE1547/UL1741SB, UL3141 and Sunspec, leading to products' market release in North America

• Fronius USA R&D team and investment management for embedded software, cloud computing software, lab testing group, system/HW engineering, program management, compliance, as well as external partner teams for software and hardware

Training/competency development:

• Internal electrification learning series and external custom courses coordination, including teaching, covering microgrids, gensets, renewables, energy storage, and components/controls to 1200+ CAT employees

• Creation of talent pools in electrification by expertise area, across CAT enterprise

Key Product R&D Experience (at Caterpillar Inc, Fronius USA)

Relevant Patents/Patent Publications

Images of products used are illustrative of Dr Reddy's research and development in various companies - they are meant to be illustrative, but not necessarily identical

Sources of images of products:

CAT Microgrids, Energy storage, inverter, MMC-S: Cat press release and campaign; CAT ECS 400 and ECS200: Cat press release; EMCP and Genset: Cat products website; Solar inverter: SMA website (example); Solar panels: India Mart site; variable speed genset - Patent pub 20170353037;CAT-fuel cell demo: Cat press release; Fronius Gen 24 and external battery - Fronius press release and Fronius brochures/websites; Fronius Back up Unit - Picture taken at Intersolar 2025

Project/Team Awards

Caterpillar Inc. – Emerging Innovation Excellence Award (Land Drilling Hybrid system, 2019)

Legacy Team/Product Awards

(Awarded to teams/product developments previously led by Suresh Reddy)

Gulf Energy Information Excellece Award - 2024 Energy Project of the year - Cat Hybrid Energy Storage Solution (Oil and Gas)

Consulting-Specifying Engineer – 2024 Product of the year – Power Category Gold Winner – Cat energy storage systems

Consulting-Specifying Engineer – 2024 Product of the year – Control Systems Category Gold Winner – Cat Energy Control System

Granted Patents

1. US12463428B2 "Systems and Methods for Multiple Energy Storage System Dispatch", Caterpillar Inc, Granted: Nov 4, 2025; Filed: Oct 4, 2023

2. US12431712B2 “Systems and Methods for Control of Distributed Energy Resources”, Caterpillar Inc, Granted: Sept 30, 2025; Filed: Sept 9, 2022

3. US11962156B2 “Systems And Methods For Constrained Optimization Of A Hybrid Power System That Accounts For Asset Maintenance And Degradation”, Caterpillar Inc, Granted: April 16, 2024; Filed: Aug 19, 2021

4. US11936184B2 “Systems And Methods For Operating Hybrid Power System By Combining Prospective And Real-Time Optimizations”, Caterpillar Inc, Granted: March 19, 2024; Filed: Aug 19, 2021

5. US11451085B2 “Fuel Cell and Battery Backup Power Sources within Power Systems”, Caterpillar Inc, Granted: Sept 20, 2022; Filed: Aug 31, 2020

6. US11428704B2 “Generator Pole Slip Detection”, Caterpillar Inc, Granted: Aug 30, 2022; Filed: Jan 9, 2020

7. US11188045B2 “Energy Management System with genset and energy storage”, Caterpillar Inc, Granted: Nov 30, 2021; Filed: March 18, 2019

8. US10998732B2 “System and Method for Diverse Multi-Source Energy Management”, Caterpillar Inc, Granted: May 4, 2021; Filed: March 20, 2019

9. US8482238B2 “System and method for estimating generator rotor temperature in an electric drive machine”, Caterpillar Inc, Granted: July 9, 2013; Filed: Nov 30, 2010

Relevant Awards

Patent Publications

1. US20250206176, “Electrified Machine and Charger Fleet and Microgrid Power Dispatch”, Pub June 19, 2025; Patent filed: Dec 13, 2023

2. US20250202235, “Structure for Computationally Efficient Optimization for Real Time Microgrid Dispatch”, Pub June 26, 2025; Patent filed: Dec 21, 2023

3. US20250125630, “Systems and Methods for Microgrid Asset Dispatch”, Pub April 17, 2025, Patent filed: Oct 17, 2023

4. US20250070595 , “Method and System for Configuring an Electrical Grid”, Pub Feb 27, 2025, Patent filed: Aug 21, 2023

5. WO2024054743, “Distributed micro-grid control system with a plurality of controllers connected to each other in a peer-to-peer network”, Pub March 2024, Filed: Aug 15, 2023

6. US20240405313 “Thermal management of Battery Systems”, Pub Dec 5, 2024, patent filed May 30, 2023

7. DE102021121927, “Power sources for a fuel cell and for power failure protection in power supply systems”, Patent pub Mar 3, 2022, Filed: Aug 24, 2021

8. US20170353037 “Flexible variable speed genset system”, Patent Pub Dec 7, 2017; Filed: June 16, 2016