# A Novel Design Methodology and Numerical Simulation of BLDC Motor for Power Loss Reduction
## 1 Introduction
BLDCs are eradicated and electronic commutation is used due to the conspired issues with mechanical commutation like sparking, EMI, and tear and wear on brushes. A Hall Effect sensor is supported by a voltage source inverter for position sensing of the rotor. The study shows how the power quality of the AC mains deteriorates due to fluctuations in voltage caused by phase-controlled AC inputs and electrical devices. Flicker sources and their impact on human safety are also indicated. An overview of EMC standards, IEC 61000-3-2, is also provided. The pulse width modulation is followed by the three-phase switching signals. The nonlinear current from harmonic distortion and AC low power factor, which are indices of power quality in the range of ICE 61000-3-2 [5; 6; 7]. In the air conditioner, for driving the compressor and fan permanent magnet, BLDC replaces a single-phase induction motor for its low power utilization through DC link capacitor and DBR. BLDC motors are fed with a single-phase AC supply, resulting in a pulsed current. In CCM, Critical or Boundary Conduction Mode (CCM/BCM) and DCM of operations are operated by the design of the energy storage element as a converter inductor or capacitor. Compared to the basic converter topologies like buck-boost converter, buck converter, Cuk converter, boost converter, PWM, a converter with a quadratic DC conversion ratio offers a significantly wider conversion range. The switching and conduction losses are reduced by the PFC based on the bridgeless converter for speed control. An AC-DC single-stage converter is proposed for efficient energy harvesting from low-voltageelectromagnetic mesoscale and microscale generators. The boost converter is used for energizing the BLDC. The BLDCM velocity is regulated using a Voltage Source Inverter (VSI). The BLDC motor speed is controlled by electronic commutation, which reduces the switching losses [8; 9; 10]. The Cuk converter is used for PFC as a cost-effective solution. The modified SEPIC rectifier for bridgeless power factor correction can be extended again for universal input voltage applications. PFC can be performed by a bridgeless Zeta converter powered by the BLDC motor, which controls the voltage and the VSI speed. BLDC motor speed and AC mains power factor correction using the Luo converter and the single voltage sensor. The reactive power produced by the load can be generated or absorbed by the bridgeless power factor correction. The canonical switching converter is modified and results in the Landsman converter. A bridgeless canonical switching converter operates in the DICM of a BLDC motor drive for PFC. The concepts of a two-state, single switch, DC to DC voltage sourced converter, canonical switching converter, and issues involved in the design of the input filter are explained and unified [11; 12; 13]. The work presented in [14] introduce the magnetic potential superimposed method for a more precise calculation of multiphase permanent magnet motors with a large air gap. If the air gap is small, the computing error can be neglected when the conventional formulas are used to calculate the air gap magnetic field. However, they will result in a great error for the evaluation of the airgap motor's magnetic field with a large air gap. The magnetic potential superimposed method combines better accuracy than the conventional formula method and takes less time than the Finite Element Method. The discussion on the selection of magnetic material that defines the amount of flux in the airgap is not addressed. In [15], a unified model of multiphase PM motors is proposed. For PM motors with multiple phases and stator windings that are nonoverlapping, numerous feasible ratios of the slot to pole number exist by adjusting the coil span angle or unwound tooth width. To get a pole pair m-phase nonoverlapping motor, the nth space harmonic must exist in the stator MMF, and the \(n\)th harmonic winding factor must be large enough to accomplish high torque density.