Brushless motor controller

[am.steen]

I want to Build this circuit for brushless motor

But my motor is 220v so I get Another mosfet no. IRF740 that has 400v and the IR2104 can have 600v
So what I should change also to drive 220v motor ??
I get this circuit from this link:

Brushless DC motor controller using Arduino and IR2101

Build a DIY sensorless brushless DC (BLDC) motor controller - ESC (Electronic Speed Controller) - using Arduino UNO board and IR2101 driver.

simple-circuit.com

I did not built the circuit yet as I need to know precautions before start.

 

[Bluejets]

The fact that the motor is high voltage rating not enough for you...???
Plenty of motors from RC gear which operate at a safe level.
Suggest you give that some thought.

 

[am.steen]

In fact I have a device that depends on this motor to work but it's control board is damaged so I want to build this circuit to run the device again it was working on 220v dc and draw 8A

 

[am.steen]

The problem here is the ground it is common for mosfet , IC's and ardinuo
If we use 220v it will burn ardinuo ?? How to modify the circuit ??

 

[kellys_eye]

If we use 220v it will burn ardinuo ??

No, it won't.

Connect the IR2101 to a separate 12V source and increase the value of the resistors such that the developed voltage doesn't exceed the input rating of the Arduino (around 560k - may need adjustment).

All supplies (Arduino, 12V to IR2101 and the 220V DC supply) should have their 'negative' (i.e. ground) connections commoned.

 

[am.steen]

What is the function of 33k and 10k resistors ??

 

[kellys_eye]

What is the function of 33k and 10k resistors ??

They are a voltage divider to (in the original schematic) reduce the 12V phase signals from each motor phase to a voltage level the Arduino can accept (3.3V). The Arduino uses these voltages phase feedback signals to monitor and control the motor speed.

Since your plan is to drive the motor with 220VDC then the phase signals will be correspondingly larger and therefore the voltage divider will have to be adjusted to compensate for that.

 

[am.steen]

Ok I design another circuit without feedback and I built it

This is the circuit







I connect the DC 220v Power through a serial 220v LAMP to be safe in case of short circuit.
When apply 12v to circuit I get short circuit across 220V and the lamp light.
I disconnect The DC 220V and test the +VE and GND of 220v Input and I found the they becomes short when we apply the 12v on IC IR2104 and when disconnect 12v they becomes open.

How this comes ??

 

[kellys_eye]

You don't show a common ground connection from the Arduino. The Arduino 0V line must be connected to the common 0V of the +12V and +220V DC supplies.

 

[am.steen]

Sorry I draw this schematic in short time but in the circuit I built the common ground is connected to all ic's and arduino also 12v is connected to all three ic's

 

[kellys_eye]

Without knowing your coding you will have to check the IN and /SD pin status to establish if any drive signal is being held high.

 

[am.steen]

I built Another simple circuit without any coding for testing the motor


When I try this circuit with BLDC 12v DC separate source the motor rotates Fine but very slow ( as it is 230V ) and I could change speed with the variable resistor then I try it on 220v DC separate source it rotates half circle and all IC's is burned then stops.
What I do wrong??

 

[Delta Prime]

I built Another simple circuit without any coding for testing the motor
View attachment 61491

When I try this circuit with BLDC 12v DC separate source the motor rotates Fine but very slow ( as it is 230V ) and I could change speed with the variable resistor then I try it on 220v DC separate source it rotates half circle and all IC's is burned then stops.
What I do wrong??

Can you please take a photo?

 

[am.steen]

First board have the control ic and second board for mosfets other components on it it not connected except resistors

 

[bertus]

Hello,

The circuit in post #12 will not work with 220 Volts.
The gate voltage will be to high and burn the gate and distroy the "driver".
As you said the chips will be gone.

Use proper driver chips as in your earlier posts.

Bertus

 

[am.steen]

Should not mosfet gates be isolated from D-S 220v voltage ??
Do you mean I have to use driver ic between 4069 ic output and mosfet gates ?? Can you suggest an driver ic no. ??