How many ESC (electronic speed controller) types? Maybe you have been confused by this question. Today we will help you to clearly know more about ESC.
1. ESC types
#1 Brushed and brushless
For base on motor, which can be divided into brushed and brushless. It according to the control signal to adjust the speed of the motor.
For their connection, usually goes like this:
- The ESC input line connected to the battery;
- The output of the ESC line (brushed have two lines, brushless have three lines) connected to the motor;
- ESC signal lines connected to the receiver.
What's the difference between brushed and brushless ESC?
Brushed Motor and Brushless Motor is like Hub and Switch in Computer Network. Brushed Motor is just a normal motor where it work by direct current/voltage (We only focusing in DC area. NO AC Motor)
#2 Blheli, simonk and kiss firmware
ESC program is divided into open source and not open source, For base on open source firmware, there are 3 main types of firmware that you can get on your ESC, which can be divided into blheli, simonk and kiss firmware.
#3 BEC and UBEC
BEC stands for Battery Elimination Circuit. In practice, this simply means that ESCs with a BEC are able to output a constant voltage and so power the equipment on board your flying platform, such as your receiver, servos or flight controller. Delivers power for your Rx and servos at ~5v (but usually no more than 2A-3A).
UBEC stands for universal BEC or sometimes ultimate BEC, which is typically a switch mode unit which is capable of reducing the voltage from 4s+ packs to the required ~5v, and can deliver as much as 10A to power many, big, digital servos and your Rx.
2. What type of ESC do quadcopters use?
BLHeli is the most common firmware being run on multirotor ESCs today. It's popularity is pushed further by support for what is called "BLHeli passthrough" built into any CleanFlight based flight controllers. What this allows you to do is to program and update all of your multirotors ESCs from the computer connection to the flight controller.
For BEC or UBEC, you really need to make sure which one you have or are buying if your goal is to have the better switching mode instead of the more problematic linear mode type BEC. Like a lot of things in RC, you have to study the words and numbers a little (types, input voltages, output voltages, ratings, etc.) to make sure you get what you need.
Brushless motors are typically 85 - 90% efficient or more, higher efficiencies for a brushless electric motor, of up to 96.5%, whereas DC motors with brushgear are typically 75 - 80% efficient. Brushless DC motors are commonly used where precise speed control is necessary. So base on the brushless motors, you should have to choose the matching ESC, which also is brushless ESC.
About Tattu 30amp ESC brushless Blheli
Tattu ESC Specifications
- Firmware: BLHeli_S V16.6 A-H-20
- Max continuous load: 30 amps
- Burst Current: 40A / 10sec
- Lipo Cells: 2 to 4 cells
- MCU: SILABS EFM8BB2 48MHz
- BEC: No
- Weight: 3.6g (board) 6.5g (total with wires and connectors)
- PCB size: 26mm L*14.5mm W
- ESC height: 6mm
- Signal wire: 150mm
- Power wire: 100mm
Suppot regular 1-2ms pulse width input, as well as Oneshot125 (125-250us), Oneshot42 (41.7-83.3us), Multshot(5-25us), Dshot150, Dshot 300 and even Dshot600and automatically detected by the ESC. High quality N-FET, half-bridge drive and PCB specialized for cooling, only flashed with BLHeli_S firmware.