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In this paper, a single switch isolated voltage-boosting converter is presented, which is derived from the traditional flyback converter and charge pump concept. The proposed converter possesses an output inductor, so the output current is non-pulsating. Moreover, there are several advantages of the proposed converter over the traditional flyback converter, such as higher voltage conversion ratio...
In digitally controlled circuits for power converter circuits, sampling data is important because a digital control circuit is operated on the basis of these data. If the sampled values have been affected by switching noise from the power circuit, the control stability of the circuit would be disturbed. This paper proposes a noiseless sampling method for both synchronous sampling and multisampling,...
The I type 3L-NPC (Three-level Neutral-Point-Clamped) converter is the most popular multilevel converter used in the renewable energy system for its low switching loss, reduced devices voltage stress. However, it suffers from problems of high conduction losses. The T type 3L-NPC is researched in the literatures to overcome the drawbacks of I type inverter. But, the high side and low side power devices...
Real-time (RT) simulation is increasingly used in power electronics and power engineering as a tool to replace actual hardware for use in the development and verification of control and complex system designs. New computing architectures and algorithms, such as parallel and distributed computing, hold the promise to meet the speed requirement of such RT simulation. Due to its inherent parallelism...
The Modular Multilevel Converter (MMC) with cascaded full bridge cells is available for AC/AC transmission system without transformers in high voltage line. This research applied a Hexagonal MMC (H-MMC) to 3-phase AC-AC back-to-back (BTB) system. The H-MMC has six arm modules with floating capacitors and is required to regulate the input-output power and capacitor voltages by controlling currents...
An new network communication system for power electronics controller to transmit the feedback signal from the sensors using FPGA based hardware controller was proposed. Based on RocketI/O network controller, customized Rocket I/O protocol was implemented to achieve high speed feedback communication between two FPGA controller. To compensate the network delay of the feedback signal, communication disturbance...
This paper describes high efficiency chopper applying SiC-MOSFETs to soft switching method with partial turn-off. This chopper basically operates by digitally gate control with partial turn-off switching using FPGA under high frequency of 100 kHz and 25 kHz. For confirming effectiveness by partial turn-off and applying SiC-MOSFETs, the 8kW rating test, efficiency measurement and principal operational...
Variable carrier frequency control of PWM inverter based on deadbeat control using SoC-FPGA based hardware controller was proposed. The inductor current was controlled using digital hysteresis method and the output current was controlled using deadbeat control with disturbancecompensator. As the result, the control accuracy and the efficiency of the inverter can be adjustable with superior tracking...
Multi-level power converters have been widely used in wind power field systems. For multi-MW wind power converter, its efficiency and reliability are the key issues in the whole wind power generation system. Multi-level wind power converters have many power semiconductors, whose power losses and reliability have great significances to the converters' efficiency and reliability. In this paper, an optimized...
Model Predictive Control (MPC) offers a variety of advantages compared to conventional control methods. The problem with MPC is the high computational cost and the associated long control cycle time. This makes MPC unattractive for processes with small time constants, as in permanent magnet synchronous motors with interior magnets (IPMSM) for electric vehicles. In this paper a Model Predictive Control...
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