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A few-cycle ultrashort laser field propagating through strongly coupled quantum wells (CQW) is numerically investigated. The results show that the harmonic signal can be tuned by the structure-control of CQW or enhanced due to propagation effects. If the structure of the CQW is spatial inversion symmetric, a disguised harmonic at the second-order harmonic position is disclosed within the normal odd-order harmonic sequence. However, if the structure of the CQW is adjusted to break the inversion symmetry, the odd-order and even-order harmonics both occur, whose intensities are also influenced by propagation effects. (a) Electric fields, (b) population differences, and (c) harmonic distributions for different well heights of barrier U1 at propagation distance of z = 120 µm. [ABSTRACT FROM AUTHOR]

The electric vehicle is seen as a possible replacement for current-generation automobiles and to address the rising pollution. In electrical drives, Insulated Gate Bipolar Transistor (IGBT) modules deliver power to the motor generate a lot of heat during switching. However, heat generation in IGBT hinders the performance of the electric vehicle. The foremost existing techniques analyze the heat however does not control the heat production in the IGBT module, and also high heat density leads to failing components. Thus to reduce the heat generated in the IGBT module, the work proposed an amalgam illogical controller that handles nonlinearity and provides a quick response. This controller is further tuned by Amended Moth System (AMS) to reduce heat consumption in the IGBT module with electrical parameters. Furthermore, the IGBT is complex to excessive voltage and excessive temperature therefore the current and voltage harmonics in the inverter are reduced by a seamless genuine adaptive filter that detects and suppresses the specified harmonics in the estimated back-EMF, consequently reducing the harmonic position error in the estimated rotor position. Even though there is a problem with a wide range of frequencies in the electric motor. To reduce the switching frequency supremacy harm checker is incorporated which is forced to choose active and zero voltage vectors alternatively, to decrease the variation in the switching frequency. Thus the proposed outcomes efficiently tackle the issues in EV and greatly reduce heat consumption in the IGBT module. • Enormous heat generation in IGBT has been reduced by using an amalgam illogical controller that enhance the parameters using an amended moth system that control the heat production in IGBT • Then harmonics are generated in current and voltage gets reduced by a seamless genuine adaptive filter for efficient motor performance. • Finally, voltage and current with reduced harmonics of 0.27% support the efficient working of the motor in which the switching frequency has reduced by supremacy harm Checker. • The proposed approach significantly reduced heat generation in electric drives of the isolated gate bipolar transistor (IGBT) with the controller, which further reduced harmonic distortions substantially to assist electric vehicles to function effectively. [ABSTRACT FROM AUTHOR]