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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
Thermal cycling is one of the main sources of aging and failures in power electronics. A possibility to reduce the stress to semiconductors is to control the amount of losses that occur in the device during operation. This work presents an active thermal controller that aims at reducing the junction temperature variations in the case of variable power profile. The switching frequency of the converter...
Pseudo single stage flyback current source inverter designed for photovoltaic applications is presented in this paper. The proposed inverter consists of flyback current source converter and h-bridge unfolding stage. The proposed system is intended to do the following functions: extract maximum power for the Photovoltaic (PV) module, inject a sinusoidal current into the grid. Flyback converter is designed...
A robotic fish should be designed to swim with the obstacle avoidance capability in the real world. In this paper, a neuro-fuzzy control method is proposed for a multi-joint robotic fish using 3D printing technology. For this method, we can use the general infrared sensors to measure the existence of obstacles and the distance from the robotic fish to the obstacles. With the inference and learning...
GaN power switches have better characteristics compared to the state-of-the-art Si power transistors. These devices offer high operating temperature and current densities, fast switching and low on-resistance. However, currently only a few producers offer technology of high voltage GaN transistors. Immaturity of this technology is the reason why experimental evaluation of GaN parameters must be performed...
In order to be prepared for future challenges facing industrial production domain, Cyber-Physical Production Systems (CPPS) consisting of intelligent entities which collaborate and exchange information globally are being proclaimed as the 4th industrial revolution. In this context, the service-oriented architecture as well as agents are often proposed. Agent technologies have been studied intensively...
This paper proposes a sensorless matrix-converter IPMSM drive system based on detecting the PWM switching-state current-ripples. By detecting the current-ripple of each PWM switching-state, the rotor position of the IPMSM can be estimated. As a result, the circuit of high-frequency sinusoidal voltage or current source is not required. A nonlinear controller is proposed here. The proposed nonlinear...
This paper discusses power losses in a current-fed DC/DC converter aimed for photovoltaic applications. Scenarios of the low voltage switch realization analyzed include a transistor with a series diode and two transistors in series. Both the high and the low voltage stage are designed with Si MOSFETs and GaN HEMTs to verify advantages of the new material in these applications. Semiconductor devices...
Provides an abstract for each of thetutorial presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings.
A method to obtain pulse width modulation (PWM) timings for a three level dodecagonal (12-sided polygon) voltage space vector structure using only sampled reference values is proposed in this paper. Typical methods that are used to find PWM timings for dodecagonal SV structures use modulation index and the reference vector angle to get the timings by using trigonometric calculations. This method requires...
This paper presents a novel diagnosis method based on error voltage for IGBTs open-circuit faults in dual-loop controlled voltage-source inverters. The phase voltage changes when open-circuit faults occur, and then there are error voltages of each phase which can be calculated directly by control algorithm with phase voltages and their corresponding flexible references both available from the main...
The converter of six-phase switched reluctance motor (SRM) requires both less switch devices and independence between phases. So instead of the frequently-used asymmetric half-bridge converter, N+2 power converter is employed in this paper. In N+2 power converter, SRM works in voltage chopping mode. While under common fixed duty-cycle PWM (FDPWM) voltage control, the torque ripple is high and the...
This paper presents an improved direct power control (DPC) strategy based on sliding mode control (SMC) with dual-closed-loop for the Vienna-type rectifiers to improve dynamic response during both start-up and load step change periods and guarantee better performances in steady state. The SMC based DPC methodology can directly regulate the instantaneous active and reactive powers without transforming...
In the simulation study of DC micro grid with a large number of isolated bidirectional DC-DC converters, both the calculation time cost and the harmonic performances need to be considered. However, traditional simple models do not have the harmonic performance, and complicated models do not have fast simulation speed. In this paper, a novel fast equivalent model of isolated bidirectional DC-DC converters...
Model reference adaptive sliding mode control (MRASMC) using radical basis function (RBF) neural network (NN) is proposed to control the single-phase active power filter (APF). The RBF NN is utilized to approximate nonlinear function and eliminate the modeling error. AC side model reference adaptive current controller not only guarantees the globally stability of the APF system but also generate the...
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