BLDC motor design by applying the control of direct current and analysis of loading mechanism soft starting

Abstract

In this research, there will be a design driver brushless DC (BLDC), which on the input voltage of the motor driver applying direct current controllers and the implementation mechanism of soft starting the operator of BLDC, which uses fuzzy logic controllers. Testing is done with a view of controlling the application of direct current to the BLDC to many conditions, namely the amount of value given fuzzy logic and the load that is given to the mechanics. The design of the driving BLDC has successfully created and implemented by applying a direct current control and the results obtained in the form of efficiency that is better than the previous design. The soft starting mechanism that controls using the fuzzy logic method possible produces a low inrush current and generates steady conditions that are better on BLDC. For values that are applied to the load, the greater the torque load placed on the BLDC, the higher the initial current needed to achieve transient time equally and opposite that the smaller the torque load placed on the BLDC, then the lower torque the load required to achieve the transient time.

Design of Brushless DC Motor Driver Based on Bootstrap Circuit

“…Compared to previous research, many of them are directly focused on control system performance. In [15], the IR2110 bootstrap circuit is implemented, but the study is focused on the fuzzy logic control performance of BLDC. The study in [20] also used an IR2110-based driver, which was tested to drive 48 V/ 1 kW BLDC.…”

“…Furthermore, the PWM signal as gate driver from the microcontroller was delivered through AND gate, which added component and complexity in the circuits as well as time delay to send the PWM signal from the microcontroller to the gate driver. Moreover, the driver, microcontroller, and other modules in [15] and [20] were still separated. In addition, the bootstrap circuit and capacitor value design in [15], [19] and [20] are not investigated in detail.…”

“…Meanwhile, the bootstrap circuit provides faster switching with only one ground. Either IR2101 [14] or IR2110 [15] bootstrap IC has been used in the design. IR2110 has the advantage since it provides a separate logic supply [16].…”

“…Since the driver in previous research is based on 5 V, potential improvement can be achieved to get lower power consumption and faster control based on a 3.3 V microcontroller. Moreover, in [20], hall effect sensors have not been utilized for speed sensor yet, while [19] and [15] only use one sensor for speed reading that will give limitation especially in BLDC with few magnet pairs. In addition, one of the most important steps in the IR2110 BLDC driver, that is, to get the appropriate value of the bootstrap capacitor, needed to be explained.…”

Design of Cooling System on Brushless DC Motor to Improve Heat Transfers Efficiency

“…In a BLDC motor, the magnetic field generated by the rotor rotates at the same frequency 20) , in addition to these advantages, electric motors are also inseparable from the dangers of overuse, such as the use of BLDC in electric vehicles when used continuously and when they have a vehicle load that exceeds the usage limit of a BLDC motor. These things will have an impact on increasing heat at the motor temperature of the BLDC so that there will be a decrease in the quality of performance on the BLDC motor, which is due to vibrations caused by vehicle shocks 21) , so that the insulation of the motor dynamo windings is damaged which can burn in its worst condition 22) .…”