Soft Switcing techniques have recently been applied in the design of dc-ac converters, in order to achive better performance, higher efficiency, and power density. One of the soft switching techniques uesd in inverters is resonant dc links. These topologies have some disadvantages such as irregular current peaks, large voltage peaks, uncotrollble pulse width, etc. Another soft switching method ...

This paper presents an alternative power conversion topology that can buck or boost the input voltage/current with linear and non-linear load depending upon duty ratio and modulation index in a single stage conversion with the help of Impedance source passive Network (L and C), which is usually known as Z-Source. The buck and boost capabilities of inverters are operated in the shoot through sta...

High frequency industrial induction heating processes typically employ resonant inverters to reach high efficiency at power levels. Advancements in wide band gap (WBG) device technology has made it feasible push the possible of these into MHz regime using solid state technology. Several topologies can be applied, each with advantages and drawbacks. This paper presents a current source inverter ...

This paper combines quasi-Z-source into a typical five-level inverter, which includes two dc voltage sources, two quasi-Z-sources and five switching devices. In this structure, the output voltage amplitude is not limited to dc voltage source and it can be increased by quasi-Z-source. Besides, due to nature of Z-source families, this new structure is reliable and higher efficiency. Also, in this...

-Because of the acute shortage of conventional energy resources, renewable energy harness is gaining attention. Voltage source inverter forms the interface to feed the power from the renewable source to utility. In order to increase the modularity of the system, the use of several parallel inverters of reduced rating is preferred. An effective control strategy to maintain the amplitude and freq...

Abstract: Model predictive control has become a promising control technology in power converter, because of the good dynamic response and accurate current tracking capability. This study mainly analyzes and verifies the Model Predictive Current control (MPC) of a three-phase voltage sources converter. The MPC controller predicts the behavior of the converter for each possible voltage vector on ...

A dynamic model for current controlled induction motor drive is developed, and a time response approach for analyzing transient behavior is formulated by means of d-q variables in the synchronously rotating reference frame. A well damped closed loop response is possible if slip frequency and current magnitude control are imposed by proper tuning of control elements of PI controller.