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