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Sine Wave Controller Working Principle Jul 25, 2017

Sine Wave Controller working principle

Electric cars in modern life is already more common, and its core is the coordination between the battery and the controller work. So how does the electric car controller work? Look at some of the details of the controller.

First, the controller works and role

The design quality, characteristics, the functions of the microprocessor, the power switch device circuit and the surrounding device layout are directly related to the performance and running status of the vehicle, and also affect the performance and efficiency of the controller itself. Different quality of the controller, used in the same car, equipped with the same group of the same charge and discharge state of the battery, and sometimes in the driving ability to show a greater difference.

Processing factors and raw material factors can not be shown in a short time, with the passage of time, sonxia electric car controller because of components, welding, wiring harness crushing process and other manufacturing and manufacturing factors failure, and repair the result is often a capacitor or a Transistor damage and other components of the reasons, it may be a wire rod desoldering or joint loose, which we call the manufacturing process caused by the failure.

Second, the controller in the sonxia electric car in the protection of the role

1, current limiting protection

When the current of the motor reaches the limit value of the controller, the controller keeps the current at a constant value, ensuring the safety of the motor and the battery, and the colleague avoids accidents in the ride.

Calling composition composition outcome Email Results Pages draft Results Results:

When the battery voltage drops to the undervoltage point, the controller into the protection state, to avoid the battery over discharge, play a role in protecting the battery; the same time, an increase of 5V voltage hysteresis protection to ensure that riding balance, do not provoke.

   Controller refers to the control of the motor speed inside the electric car inside the important components, but also the core of the electric car electric system, the main control of the motor speed, electric vehicle energy management system and a variety of signal processing core components. In the electric car industry also requires the controller has a brake power, undervoltage protection, undervoltage recovery set over current protection and other corresponding series of protection functions.

The electric vehicle controller can also be divided into a brushless controller and a brush controller. Brushless controller relies on electronic commutation, the complexity of the circuit is much higher than the brush controller, so its manufacturing costs and process is much higher than the brush controller.

     Brush controller detection method:

(1) Disconnect the power supply with diode check

A red table pen connected to the controller power input positive, black pen then negative, charging phenomenon is normal, short circuit is damaged.

B red pen connected to the controller power input negative, black pen then red, yellow, green, short circuit is damaged.

C red pen connected to the controller power input negative, black pen connected to the motor negative should have 400-700 parameters.

D red table pen connected to the motor negative, black pen connected to the controller positive, should have 100-300 parameters.

E turn red, black, green, should not have short-circuit phenomenon.