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This paper presents a coupling method of power supplies to improve power density, efficiency, and dynamic response by taking the case of heater supply, ignitor supply, and keeper supply for hollow cathode of an all electric propulsion (AEP) Hall thruster. The working principle and timing characteristic of the coupled supply, as well as the three-loop control, current sampling and chopping switch control...
This paper presents a galvanically isolated gate driver system for medium voltage SiC-MOSFETs. A low common mode coupling capacity of 1 pF and good electrical insulation of the gate driver power supply are achieved by using a current-loop AC-bus power supply. The power semiconductor is protected against unintentional self-turn-on by a low resistance gate path that is active while the gate driver is...
Inductive Power Transfer power supplies for electric vehicles (EV) charging in dynamic applications need to tolerate large variations in coupling and tuning with varying loads. This paper investigates the use of a buck converter to regulate the input voltage to a fixed frequency unidirectional switch push-pull converter to meet the requirements of dynamic charging. The presented circuit is optimised...
Inductively Coupled Power Transfer (ICPT) systems are designed to deliver power efficiently from a stationary primary source to movable secondary loads over air gaps via magnetic coupling. Present vehicle chargers are wired. Corrosion of connectors is a very serious problem. Frequent replacement and maintenance are needed for proper operation. For charging different vehicles with different battery...
In order to study the influence of continuous high-frequency voltage pulse to insulation life of inverters, to get electrical life information of insulating material about new recipes and new techniques as quickly as possible under condition that the insulation failure mechanisms should not be changed, one power supply for insulation aging test device using the cascaded method is designed. The main...
This paper explores the concept of developing a bondpad-less fully-integrated inductive link for power/data transfer between a CMOS Integrated Circuit (IC) and a PCB. A key feature of the implemented system is that it requires no off-chip components. The proposed chip uses a standard 0.35 µm process and occupies an area of 2.5mm×2.5mm and an on-chip inductor occupies an area of 1.5mm×1.5mm. At 900MHz,...
In synchronous rotating frame (SRF), the mathematical mode of a three-phase PWM VSI with LC filter is complex, and the dq components have cross coupling terms. In order to obtain good dynamic and static performance, the controller structure should be inherently based on the systempsilas mathematical model, which means that the decoupling control strategy with feed-forward should be adopted. But this...
This paper proposes a transformer-coupled series DC active power filter (DCAPF) applied to high performance magnet power supplies with large current and low ripples. In the condition of heavy magnet loads, this type of DCAPF has much better filtering performance compared with the parallel DCAPF. Firstly, the configuration of the magnet power supplies with the series DCAPF is proposed. Then a novel...
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