The Trade-off of Switching Losses and EMI Generation for SiC MOSFET with Common Source and Kelvin Source Configurations

In this paper, the characteristics of dID/dt, dVDS/dt and oscillations for 3-pin and 4-pin MOSFETs using Kelvin source and common source configuration are experimentally identified. With theoretical analysis and spice simulation utilized, the common source inductance-induced negative feedback mechanism is investigated. A quantitative analysis is also performed to reveal the trade-off between switching losses and EMI generation between 3-pin and 4-pin MOSFETs

A Modular Active Front-End Rectifier with Electronic Phase-Shifting for Harmonic Mitigation in Motor Drive Applications

In this paper, an electronic phase-shifting strategy has been optimized for a multiparallel configuration of line-commutated rectifiers with a common dc-bus voltage used in motor drive application. This feature makes the performance of the system independent of the load profile and maximizes its harmonic reduction ability. In order to further reduce the generated low-order harmonics, a dc-link current modulation scheme and its phase-shift values of multidrive systems have been optimized. Analysis, simulations, and experiments have been carried out to verify the proposed method

An Optimized Hybrid Modulation Scheme for Reducing Conduction Losses in Dual Active Bridge Converters

A linearized hybrid modulation scheme for the dual active bridge (DAB) converter is proposed in this article. For the purpose of minimizing the conduction losses dissipated on the transformer and the power transistors, an optimal relationship function between the two control variables employed in extended phase shift (EPS) modulation can be derived. However, the obtained relationship function is a complex expression, which is not good for simple on-line control. Hence, a linearized modulation scheme is proposed in this article. This modulation scheme can achieve a quasi-minimum root-mean-square (rms) value of the leakage inductance current for the same output power. Meanwhile, the zero-voltage switching (ZVS) of the power transistors can be achieved over the whole power range. The power transfer capability is also kept the same as the optimal EPS scheme. Finally, experiments are conducted on a laboratory prototype to validate the effect of the linearized modulation scheme on the reduction of conduction losses. The experimental results present an improved converter efficiency and the realization of ZVS.</p