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This paper proposes an advanced model predictive control for the three-level active-neutral-point-clamp (ANPC) inverter in order to improve the system performance with fast dynamic response and ensure the stability of the controller. The proposed scheme is Lyapunov function based voltage mode control which utilizes the discrete behavior of the converter considering the unavoidable quantization errors...
This paper discusses an optimized switching pattern for reducing an input current distortion of a matrix converter using a space vector modulation. The matrix converter has 27 instantaneous output voltage / input current patterns. In order to keep low input current distortion, the matrix converter always must select optimized switching pattern. A space vector modulation is one of solution of these...
This paper analyzes the conducted noise generation mechanism of totem-pole bridgeless PFC converter in consideration of frame ground capacitor and LISN at every input voltage zero-crossing. The spike current occurs at zero-crossing and causes severe common mode noise. The frequency range on noise spectrum caused by zero-crossing issue is discussed by mathematical calculation. Furthermore, the experimental...
Modular Multilevel Converter (MMC) is one of the most promising topology in medium- and high voltage high power application such as high-voltage dc (HVDC) transmission systems and medium voltage drives (MVD). In high power application, the semiconductor loss modelling is essential for system efficiency evaluation, thermal system design. Power loss information is also indispensable in device thermal...
It's known that single-phase power factor correction (PFC) converter has second-order harmonic currents (SHC), which results in voltage ripple on DC load. The active storage unit (ASU) is employed to absorb SHC with ASU's input current (iasu) following SHC. In order to accurately extract ASU's current reference (iasu*) in a simple way, a real-time calculation method is proposed. At the same time,...
In this study, the feedback controllers were designed and implemented to fulfill the constant-voltage (CV) and constant-current (CC) output modes for a power converter. This converter's power stage was composed of a stand-by power, power factor corrector, and DC-DC converter. The topology used by the DC-DC converter was a phase-shifted full-bridge with a parallel current-doubler rectification converter...
This paper describes a design for fast and robust nonlinear deadbeat control for boost DC-DC converters. Nonlinear current reference deadbeat control is derived based on nonlinear state equation of the converter. Load disturbance compensation is implemented thus forming a new robust nonlinear controller. Both experiments and simulations of boost converter with input 12 V, output 20 V, load 4 Ω and...
The harmonic performance of the slim dc-link adjustable speed drives has shown good performance in some studies but poor in some others. The contradiction indicates that a feasible theoretical analysis is still lacking to characterize the harmonic distortion for the slim dc-link drive. Considering the shortcomings of the present harmonic analysis methods, such as the time-domain simulation, or the...
The VIENNA rectifiers have advantages of high efficiency as well as low output harmonics and are widely utilized in power conversion system when dc power sources are needed for supplying dc loads. VIENNA rectifiers based on three-phase/level can provide two voltage outputs with a neutral line at relatively low costs. However, total harmonic distortion (THD) of input current deteriorates seriously...
The Y-source converter is one of the recent proposed impedance source converters. It has some advantages as having a high voltage gain between the input and output voltage sides using very small duty cycle ratios. For many applications, the input voltage needs to be boosted to higher output voltage, such as for fuel cell, battery electric vehicles and renewable energy applications. Understanding the...
This paper focuses on the loss analysis and optimized design of DC-DC converter for battery module. By using the data measured from the experiment study of inductor loss and component datasheets to derive the inductor, MOSFET, and capacitor loss equations of bidirectional buck converter, boost converter, and buck-boost converter through numerical analysis. In addition, the charging and discharging...
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