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Spring 2023

Xue, Cheng

The linear control structure shows limited bandwidth for high-performance ac drive applications and also it is difficult to deal with complex systems with multi-objective optimization demand and nonlinear, high-order characteristics. With the development of more powerful digital platforms and the...

Fall 2020

Jiang, Changpeng

Facing the trend of rapid-growing solar PV capacity, there is an increasing demand for achieving efficient and reliable energy conversion between distributed PV plants and the utility power grid. Varieties of the three-phase transformerless solar PV inverters have been developed to enhance the...

Fall 2015

Zhang, Ye

Among the medium-voltage (MV) high-power industrial drive applications, the PWM current-source drive systems are increasingly used in recent years, due to the simple structure, motor friendly waveforms and fuseless short-circuit protection. A typical challenge being faced by the high-power PWM...

Spring 2024

Zargari, Faraz

With the emerging proliferation of electric vehicles (EVs) in traffic, the optimal deployment of EV charging stations has become a critical issue due to the foreseeable significant impact on conventional power distribution systems and traffic networks. With the complex coupling between...

Spring 2010

Li, Yan

Distributed generation systems based on renewable energy sources have been experiencing rapid development in recent years. As well, a more recent concept called microgrid is developed by grouping a cluster of loads and paralleled DG units in a common local area. This thesis focuses on the...

Spring 2018

Munir, Md Shirajum

The increasing utilization of power electronic loads in today’s homes is a growing concern for utility companies due to the increased harmonic distortions. The harmonic problem is further complicated by the harmonic resonance introduced by other system components, such as the power factor...

Fall 2020

Shi, Tong

In recent years, wind farms (WFs) based on variable speed wind turbine generators (VSWTGs) are occupying a significantly increasing market share due to the capability of controlling wind energy generation. The power control system in VSWTGs improves the wind energy conversion efficiency, while...

Fall 2021

Li, Yuzhuo

Multilevel converters (MLCs) have been widely accepted for decades in various applications, e.g. high-voltage transmission systems, medium-voltage drive systems, distributed generation integrations, low voltage power supply, etc. During the evolution of power electronics equip-ment, a large...

Fall 2012

Ni, Ruoshui

A low-switching PWM scheme is presented for a high power current source rectifier (CSR) system to actively compensate the grid background harmonics and improve the line current harmonic performance. The PWM scheme described above is placed in context with the existing techniques review of the...

Spring 2023

Moscardi Pauka, Gabriel

This research deals with wide speed control of permanent magnet synchronous machines (PMSMs) driven by voltage-source converters (VSCs). The objective is to develop a current control algorithm that allows said machines to optimize their torque for any speeds within their operational range, for...