We consider the Selective Harmonic Modulation (SHM) problem, consisting in design of a staircase control signal with some prescribed frequency components. In this work, we propose novel methodology to address SHM as an optimal problem which admissible controls are piecewise constant functions, taking values only given finite set. order fulfill constraint, introduce cost functional affine penali...

For high-power converters, the low switching frequency (SF) modulation represented by selective harmonic elimination pulse width (SHE-PWM) is crucial to reduce loss and enhance efficiency with a good steady-state performance. However, since advantages of SHE-PWM mainly come from fixed angle distribution limited non-linear equations, angles should be adjusted slowly. This requires that bandwidth...

A highly integrated frequency quadrupler MMIC that uses three-dimensional MMIC (3D-MMIC) technology is presented. It consists of four driver amplifiers, two doublers, and a 2-band elimination filter. These seven circuits are integrated in only a 2.36 mm2 area. The filter sufficiently suppresses spurious output components. The third and fifth harmonic components, which are the spurious component...

In multilevel inverters (MLI), output voltage waveform consists of dominant low order harmonics, which needs to be minimized. Simultaneously, good control over the fundamental for desirable operation is needed. this paper, an atom search optimization (ASO) based selective harmonic elimination (SHE) method proposed a variable dc bus reduced component count (RCC) MLI. ASO population-based metaheu...

Affected by the negative sequence component and harmonic component of three-phase grid, the conventional three-phase software phase-locked loop (SPLL) circuits were unable to extract the magnitude-phase information of three-phase fundamental positive sequence component accurately, and the dynamic response speed was slow. In order to solve this problem, this paper introduces T/4 time-lapse elimi...

This paper shows a preliminary study about the output voltage modulation of modular battery system based on seven-level cascaded H-bridge inverter used for vehicle propulsion. Two generally known techniques, pulse width (PWM) and fundamental selective harmonic elimination (FSHE), are extensively compared such an innovative considering EVs’ broad torque-speed range. The losses, as well inverter-...

Many control schemes have been proposed for induction motor and permanent magnet synchronous motor control, which are almost highly complex and non-linear. Also, a simple and efficient method for unified control of the electric moto are rarely investigated. In this paper, a novel control method based on rotor flux orientation is proposed. The novelties of proposed method are elimination of q-ax...

Selective elimination of unwanted synapses is vital for the precise formation of neuronal circuits during development, but the underlying mechanisms remain unclear. Using inositol 1,4,5-trisphosphate receptor type 2 knockout (Itpr2(-/-)) mice to specifically disturb somatic Ca(2+) signaling in astrocytes, we showed that developmental elimination of the ventral posteromedial nucleus relay synaps...

With advances in solid-state power electronic devices, control techniques (PWM) have been devised to obtain high dynamics responses from a multilevel conditioning converter-Photovoltaic. This work discusses the advantages and drawbacks of two different PWM techniques, sinusoidal (SPWM) technique Third harmonic injection (THIPWM) technique. These methods are compared by discussing their ease imp...