University of Pretoria
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Michael Njoroge Gitau was born in Murang'a, Kenya in 1961. He attended University of Nairobi between 1980 and 1984 graduating with a First Class Honours Bachelor of Science degree in Electrical Engineering. Between January 1985 and August 1988 he was employed as an Assistant Electrical Engineer by the Kenya Railways Corporation. In September 1988 he joined the University of Nairobi as a Teaching Fellow. In September 1990, he was awarded a Foreign and Commonwealth scholarship to pursue doctoral resear4ch in power electronics at Loughborough University in the UK. He completed his PhD studies in December 1994. From January 1995 until end of January 1996, he worked as Lecturer in the Department of Electrical Engineering, University of Nairobi. From February 1996 until September 1997, he was a Postdoctoral Fellow at University of Stellenbosch, South Africa. Since November 1997 to date he has been with the Department of Electrical Electronic and Computer Engineering, University of Pretoria.

Publications

  • Review on DC collection grids for offshore wind farms with high-voltage DC transmission system
  • Analysis, modelling and measurement of the effects of aluminium and polymer heatsinks on conducted electromagnetic compatibility in DC-DC converters
  • Modelling and measurement of high-frequency conducted electromagnetic interference in DC-DC converters
  • Dynamic analysis of DC-DC converter internal to an offshore wind farm
  • Steady-state and small-signal models of a three-phase quasi-Z-source AC-DC converter for wind applications
  • Analysis and design of a single-phase tapped-coupled-inductor boost DC-DC converter
  • Conducted EMC Modelling in Modern DC-DC Power Converters
  • Sustainability of power generation for developing economies: A systematic review of power sources mix
  • Z-source active rectifier for wind energy applications
  • Analysis of a 4-phase tapped-inductor DC-DC converter for high boost ratio wide input voltage range applications
  • Integrating an Offshore Wind Farm to an Existing Utility Power Network via an HVDC Collection Grid: Alternative Topology
  • Asymmetric Neutral Point Diode Clamped Topology with Reduced Component Count for Switched Reluctance Machine Drive
  • A Single-Switch High Boost-Ratio Active Rectifier Interface for Low-Voltage Wind Generator
  • Low cost power lead extended pre-compliance conducted EMI measurement setup and diagnostics with compact LISN
  • Loss reduction in generalised multilevel converters
  • High boost‐ratio bidirectional converter for interfacing low‐voltage battery energy storage system to a DC bus
  • Rotor speed control of a direct-driven permanent magnet synchronous generator-based wind turbine using phase-lag compensators to optimize wind power extraction
  • Comparative study between a three and five level WRPWM switching scheme
  • Approach for Screening and Ranking Potential Receiving End Points in Planning New HVDC Schemes
  • High-power fault-tolerant and multiple independent loads LED driver
  • Control of multi-level voltage source converters integrating a wind turbine system into the grid
  • Power processor for interfacing battery storage system to 725 V DC bus
  • Elimination of the Voltage Output Fluctuations of a Vienna Active Rectifier-I Integrated Under Unsymmetrical Faults Based Wind Power Plant
  • A Modular Circuit Synthesis Oriented Modelling Approach for Non-Isolated DC-DC Converters in CCM
  • Characterising and modelling extended conducted electromagnetic interference in densely packed DC-DC converter
  • Three-phase quasi-Z-source rectifier modeling
  • Modelling and measurement of high switching frequency conducted EMI
  • Multilevel switched-capacitor DC-DC converter with reduced capacitor bank
  • Effects of charging algorithm and converter topology on energy efficiency
  • Carrier Modulation Schemes of Asymmetric, Multileveled, Switched Reluctance Machine Drives
  • Modeling and control of voltage source converters for grid integration of a wind turbine system
  • Control of a direct-driven permanent magnet synchronous generator-based wind turbine to achieve maximum wind-power extraction
  • High efficiency multilevel switched-capacitor DC-DC converters for interfacing DC-buses with separate ground
  • Characterising and modelling extended conducted electromagnetic emission
  • Unified Approach for Synthesis and Analysis of Non-Isolated DC-DC Converters
  • Component proximity effects in high density and high switching speed power converters
  • An SMC-MRAS Speed Estimator for Sensor-Less Control of DFIG Systems in Wind Turbine Applications
  • Common mode noise in three-level DC-DC converters
  • Conducted EMC modeling for accreditation in DC-DC converters
  • Analysis of a DC collector-based power converter topology for an offshore wind farm
  • Simplified negative load-based approach versus full HVDC modeling in assessing the HVDC options for the Cape network
  • Comparative analyses of DC collection grid based power converter topologies for offshore wind farm
  • A torque-based MRAS estimator for position/speed sensor-less control of DFIG systems
  • Analysis of N-phase tapped inductor boost DC-DC converters
  • Performance analysis of power converter based active rectifier for an offshore wind park
  • A Unified Analysis of DC–DC Converters’ Current Stress
  • A Unified Rule-Based Small-Signal Modelling Technique for Two-Switch, Non-Isolated DC–DC Converters in CCM
  • Modelling and control of a VIENNA smart rectifier-I for wind power systems integrated under transient conditions
  • Fault Ride-Through Capability of MMC Based Wind Power Plant Integrated Under a DC-Link Fault
  • Compact energy efficient switched-capacitor multilevel DC-DC converters for interfacing DC-buses with common ground
  • 2-Quadrant DC-drive using controllers based on simplified transfer function models
  • A PV Tied Single Core Triple Inductor Based Multi-Channel LED driver for Greenhouse Applications
  • Design and performance analysis of a universal motor for industrial alarm systems
  • Effect of voltage-loop controllers on bus voltage fluctuation and recovery time in voltage source converters
  • Energy Strategy Reviews
  • FPGA-implemented carrier based SPWM multilevel controller
  • Modeling conducted EMI noise generation and propagation in boost converters
  • Optimal PWM switching strategy for single-phase AC-DC converters
  • Pwm switching strategy with reduced harmonic injection for buck converters
  • Third-harmonic supply current minimization in single-phase AC/DC converters
  • ANALYTICAL TECHNIQUE FOR PREDICTING HARMONICS GENERATED BY INVERTERS EMPLOYING NATURALLY SAMPLED PWM
  • Mathematical modeling of analog controlled voltage source converters for improved dynamic response
  • High boost-ratio bidirectional converter for interfacing low-voltage battery energy storage system to a DC bus
  • Rotor Speed Control of a Direct-Driven Permanent Magnet Synchronous Generator-Based Wind Turbine Using Phase-Lag Compensators to Optimize Wind Power Extraction
  • Comparative analyses of dc collection grid based power converter topologies for offshore wind farm
  • Modular Circuit Synthesis Oriented Modelling Approach for Non-Isolated DC-DC Converters in DCM

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