Terrence J. Summers

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The cascaded H-bridge converter (CHC) topology is ideal for implementation of direct connection static compensators (STATCOMs). However the topology requires significantly different control strategies as compared to conventional two level transformer connected STATCOMs and other multilevel STATCOMs. This paper outlines all aspects of a novel controller for(More)
This paper extends research on single phase microgrids [1] to implement a Virtual Output Impedance (VOI) in a three phase system utilising cascaded PI voltage and current control in the Rotating Reference Frame (RRF). The paper proposes two methods for the selection of VOI values; a selection surface and a summation approach. SABER simulations and dSPACE(More)
Due to their robustness and simplicity of control, dc machines continue to be widely used in many applications, including mining. Although a mature technology, dc machines still require research attention to accommodate for heavier loads and harder operation conditions dictated by production needs. Recent advances in sensoring, data acquisition, and signal(More)
This paper describes the development of a 2.2 MW DC electric machine based dynamometer for the cyclic testing of motors used in mining applications. The dynamometer, through the application of sophisticated control, is able to simulate the real dynamic digging conditions of an electric rope shovel. The paper will discuss the facility and the control(More)
This paper refers to a "DC Motor Duty Meter" project which aims to develop a comprehensive condition monitoring tool for DC motors used in mining excavators. The paper presents experimental waveforms measured internally and externally to the motor at different rotation velocities. The paper focuses on analysis of these waveforms both in time and frequency(More)
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