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Electromagnetic interference (EMI) noise is one of the major issues during design of grid-tied power converters. A novel $LCL$ filter topology for a single-phase pulsewidth modulation (PWM) rectifier that makes use of bipolar PWM method is proposed for a single-phase to three-phase motor drive power converter. The proposed topology eliminates high dv/dt from the dc-bus common-mode (CM) voltage by...
The efficient reduction of EMI noise generated by power converters has been an indispensable technology. In order to meet the requirements of CISPR22, EMI filters have to be equipped with power converters. It is widely known that an EMI filter can be designed more optimally if the designer could know its inherent EMI noise in advance. This paper presents an accurate simulation method for the conducted...
a parallel active common mode current suppression scheme is present. Two different compensation circuits, which are direct parallel and indirect parallel compensation circuits, are introduced in this research. The common mode current equivalent model of the single-phase half-bridge inverter with two different compensation circuits is studied. The design principle of two compensation circuits is illustrated...
A novel main circuit for arc welding inverter has been proposed, in which the switching frequency is no longer restricted by the electrolytic capacitor, so it enables the DSP-controlled inverter welding machine to exploit the perfect control ability on the welding procedure and to satisfy all kinds of requirements for physical properties, out-characteristics and dynamic characteristics of electric...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
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