The primary focus of Dr. Chandra’s work is related to the advancement of new theory & control algorithms for power electronic converters for power quality improvement in distribution systems & integration of renewable energy sources. He has published around 400 research articles in these areas. The key differentiator of his work is in its simplicity and practicality of new solutions and has had a significant impact, which is now extensively used in the industry. His research work is referred by engineers as well as researchers around the world. He was instrumental in writing six review articles on power quality, which have become de-facto standards worldwide. His total Google citations are around 20600, h-Index 54, i10-Index 259. He is co-author of John Wiley's book ‘Power Quality – Problems and Mitigation Techniques’.

Contributions to power quality improvement in distribution systems:

Dr. Chandra’s work has advanced the area of Active Power Filters (APF). It has significantly simplified and reduced the cost of the design of APF while simultaneously satisfying stringent regulatory standards of power quality. His pioneering work has resulted in numerous new control algorithms, including a novel control algorithm performing multiple tasks, such as, voltage regulation, harmonic compensation, power factor correction, and nonlinear load balancing that were performed in the past through multiple devices. Because of this development, some manufacturers have started using these techniques in their products. He has made outstanding contributions to the development of the Unified Power Quality Conditioner (UPQC). The work done in collaboration with Hydro Quebec/IREQ and experimented to coordinate reactive load supplied by shunt and series inverters, resulted in a cost-optimized UPQC design, to provide balanced, distortion-free, and constant magnitude voltage for sensitive loads and concurrently to compensate the load harmonics, load balancing, and reactive power compensation, making the overall power distribution system more robust.

Contributions to integration of renewable energy sources to distribution system with improved power quality features:

He was among the early researchers to propose the concept of grid side inverter utilization in Doubly Fed Induction Generators (DFIG) for wind energy conversion system (WECS) to correct power quality problems in the distribution system. Optimal design of back-to-back inverter in DFIG reduces the overall cost of wind energy systems as the grid side inverter could eliminate additional hardware needed to address power quality problems. His pioneering work in Adaptive Network-Based Fuzzy Inference System for sensorless control of Permanent Magnet Synchronous Generator has advanced the field to accurately calculate the rotor position and speed with great immunity against parameter variations. He has also proposed control techniques for photovoltaic inverters to seamlessly configure themselves to function as active filters and reactive power compensators in smart power grid applications. He was among the first researchers to suggest the 24-hour availability of power electronics in photovoltaic (PV) systems.

Remote, smart, sustainable and resilient northern Canadian communities:

Dr. Chandra was/is involved in some projects for remote Northern Quebec communities, in collaboration with industrial partners, on Hybrid standalone system consisting of many elements such as photovoltaic panels, wind turbines, DG, energy storage system, AC and DC loads, and dump load. Many topologies have been developed, simulated, and implemented in hardware lab. Concept of smart grid dedicated to the Net Zero Energy Community is also being investigated.

• Eco-friendly Hybrid Standalone Renewable Energy based Power Generation Systems for Isolated communities living in Frigid Climate Conditions in North of Canada (NSERC/Imalog (Suez) Inc).

• Load demand management with high renewable energy penetration in electric distribution systems (NSERC).

• Improvement of electrical power quality & energy efficiency in low voltage electric network (NSERC/Power Survey Inc).

• Hybrid storage system based power converter modules for standalone systems (NSERC/Imalog (Suez) Inc).

• Hybrid standalone renewable energy system to provide electricity to an isolated mine in the north of Canada (FRQNT/Tshiuetin/TechnoCentre Éolien). Many university and industrial researchers along with many graduate students were involved in this multidisciplinary project.

• Northern Net-Zero Community (FRQNT/TUGLIK). Many university and industrial researchers along with many graduate students are involved in this multidisciplinary project.

• Impact of renewable energy integration on distribution networks (NSERC/Hydro-Québec/IREQ). This project involves many researchers from IREQ, ETS professors, and graduate students.

• Development of Pressure Retarded Osmosis based Electricity Production in Quebec (FRQNT/H2O Innovation/Concordia)

• Cooperative Isolated Renewable Energy Systems for Enhancing Reliability of Power in Rural Areas. India/Canada/Australia/USA collaborative project financed by Government of India

• Development of Module for Fault Detection and Diagnosis for Wind-Do Microgrid PLC (Wind-Do Inc)

• Feasibility studies and laboratory implementation of a micro-grid for isolated communities (CIRODD/GSE Solutions Inc.)

• Identifying Oscillation Mechanisms and Locating Forced Oscillation Sources for Power Systems with Wind Power (FRQNT/ÉTS/McGill/IREQ)

• Primary measurements for electrical condition monitoring in wind farms (NSERC/Power Factors Inc (Formerly Arista Renewable Energies Inc))