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The proposed xenon lamp drivers are composed of the capacitor charging and main pulse unit, simmer power supply unit, and series trigger unit. The capacitor bank stores the energy to generate pulses of light sintering and the series trigger ionizes the xenon in the lamp. The simmer not only sustains this ionized xenon gas but also improves the better lamp lifetime and efficiency by reducing the number...
In this paper, a novel three-phase rectifier based on triple line-voltage cascaded VIENNA converters has been proposed. A comprehensive analysis to the proposed converter is presented. Compared to conventional three-phase cascaded H-bridge converters, in the proposed new multilevel converters, the switch voltage stress is reduced, and fewer switches and dc capacitors are required under the similar...
Focus is on the design and development of an auxiliary power supply converter for HVDC and FACTS applications, utilising integrated gate-commutated thyristors. Due to relatively high requirements for gate drive power and operating voltage of 2.8 kV, special measures have to be considered when designing such systems. The tapped-inductor buck converter topology was chosen as the first non-isolated conversion...
This paper presents a new power supply consisting of an inverter and a power factor correcting stage with an integrated active energy storage for servo drives. The energy storage is realized with a capacitor and a DC-DC-converter. This enables the power supply to reuse the braking energy of servo drives instead of losing it in a braking chopper resistor. The main advantage is the simple integration...
In order to improve the efficiency of high voltage power supply for electron beam welder, the characteristics of LCC series parallel resonant converter with capacitive filtering are studied in this paper, and the circuit model of LCC resonance in discontinuous current mode(DCM) is established. The working mode of the converter is analyzed by mathematical time domain analysis method, and the mathematical...
This paper presents the design of a Power Electronics Building Block (PEBB) based on 1.7 kV SiC MOSFET power modules. The PEBB is an H-bridge converter module that can be cascaded to construct multilevel converters. Novel designs including gate driver with Rogowski shortcircuit protection, powerful distributed controller, isolated A/D sensor with high common-mode noise rejection, double-side cooling...
As the demand of ultra-high DC voltage input is increasing recently, this paper proposes a new switched mode power supply with switches connected in series to realize ultra-high input voltage. To make the switches voltage balance, the consistency of multi-switches driving signals is important. In this paper, a novel driving method based on the integration of pulse transformer for ultra-high DC voltage...
In order to improve the reliability of Switched Reluctance drive system, this paper presents a new control method to reduce the capacitance value of DC bus. Firstly, based on the equivalent mathematical model of the electrolytic capacitor, the capacitance value of the DC bus is estimated at the fixed frequency. Three methods are proposed to reduce the capacitance of the bus, and the mathematical relationship...
Heat dissipation in switching power supply has become an increasingly severe problem as the power density increases. Evaporative cooling technology, using the latent heat of cooling medium to take away heat, has high cooling efficiency. However, there is a compatibility issue between the cooling medium and the materials of switching power supply, which may cause stability and insulation problems....
A high frequency power supply of the thyristors controlled rectifier and LCC Series Parallel Resonant Converter (LCC-SPRC)is presented on a variety of boost converter in this paper, which can overcome the limitation of the applications of LC Series Resonant Converter(LC-SRC) and LC Parallel Resonant Converter(LC-PRC) for high voltage and high power applications. The converter is used through the frequency...
We have developed an insulation-type flyback converter circuit for high-frequency operation. We estimated the high frequency characteristics of passive devices in various areas of the DC-DC converter circuit. We produced a flyback transformer experimentally and evaluated the frequency response properties. In order to verify the fast switching operation, the input and output voltages and currents of...
This paper presents a novel three phase symmetrical cascaded multi-level inverter topology based on switched capacitor basic units. The proposed topology has inherent capability to boost the input voltage and can generate multilevel output voltage with reduced number of power supplies and switching devices compared to that for other recently developed three phase topologies. Further, the presented...
This paper describes design and development of Pulsed Power DC-DC converter called Pulsed Power Supply Unit for Transmit/Receive Integrated Module of L-band SAR. This paper presents topology selection, design challenges and use of bias winding for feedback. Novel feature of this design is that by using bias winding for feedback overall efficiency is improved and excellent regulation of Tx outputs,...
An improved scheme of forward converter is proposed in this paper based on the small-volume and high-power-density requirements of switching mode power supply. The converter can provide a constant magnetic resetting voltage during hold-up time interval under action of an additional circuit, which allows the converter's duty cycle to be larger than 50 percent. It helps to transfer the energy stored...
Induction heating (IH) appliances are widely used for industrial appliances and home electronics because IH has a lot of merits. Recently, wireless power transfer attracts attention as a promising industry. As for wireless power transfer, inductance is changed in accordance with power transmission distance or surrounding environment. Similarly as for IH, inductance and resistance as equivalent circuit...
Recently, flying capacitor multi-level (FCML) converters with GaN power switches have received increased attention due to their potential to achieve high efficiency and high power density. However, one of the major challenges is providing power to the gate drive circuits, most of which are not ground referenced. The most common existing method utilizes isolated DC/DC converters, which are bulky, expensive...
All types of losses in single-step, single-inductor power supplies for energy-harvesting applications are derived. The single-step energy-harvesting-based power supplies rely on delivering input power to the load using a single power conversion stage. Thus, it alleviates the problem of employing two cascaded power converter stages that exist in the conventional energy-harvesting power supplies. Therefore,...
The power supply is one of the major challenges for applications like internet of things IoTs and smart home. The maintenance issue of batteries and the limited power level of energy harvesting is addressed by the integrated micro power supply presented in this paper. Connected to the 120/230 Vrms mains, which is one of the most reliable energy sources and anywhere indoor available, it provides a...
Application of low-voltage insulated gate bipolar transistors (IGBTs) in high voltage power electronics system is attractive for low cost, high operating frequency, low weight and low volume. The paper presents a multi-module-cascade High-Voltage Switch based on modular multilevel converter (MMC). With the cascade of low-voltage modules, it is realized high-voltage composite switches with working...
This paper describes a 10kV cascade pulsed power supply for discharge applications with pulse width from 5μs to 30μs. Each cascade unit contains a main switch for generating a voltage switch and a chopping switch to reduce the fall time. A number of IGBTs are used for switching, and the driver devices adopt the design of pulse transformer. The trigger signal is generated by the H-bridge inverter circuit...
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