Explanation of higher efficiency with PWM frequency, efficiency vs damping and theoretical limit of efficiency improvement.
Tag: theory
On XT30-caused damage
Replacement of 2xPH2.0 to single XT30 in 2S whoop often burn voltatge regulator out. Here I consider why it happens and possible methods of prevention by numerical simulation of the circuit
0603 vs 0802
0603 and 0802 motors are compared. The reason of different flight time is a bug in BLHeli_S firmware that affects 0603 motors. The thrust and rpm curves are the same, the only difference is current consumption caused by excess braking.
30% more flight time by ESC FW mod!
Proof-of-concept ESC firmware mod makes flight 30% longer. Video tests.
DC brushed: inductance and PWM frequency
Based on my recent theoretical model experimental data are analyzed, motor inductance is determined and data are fitted vs PWM frequency
DC brushed motor theory
DC brushed motor theory
0716 (17500) brushed: 4, 3, 2 blade
Detailed experimental results and theoretical fit for 0716 brushed motor loaded with 4, 3 and 2 blade propellers.
Brushed motor: Model for PWM-ed DC motor
Testing brushed 0716 motor. Preliminary results. Some problems with theoretical model solved, firmware improved.
Online graphing tool for DC motors and propellers
online plotter to simulate behavior of DC motors and propellers
Графический калькулятор DC моторов и пропеллеров
Удобный онлайн графический калькулятор для моторов и пропеллеров с целью понимания что, как и куда