Types of DC Motor Controllers and DC Motor Controls
Brushless DC Motor
Also known as synchronous DC motors or electronically commutated motors, the main difference between these types of motors is that they lack a commutator, which is replaced by a servo that can detect and then adjust the angle of the rotor, BLDC motors are robust and safe.
Brushed DC Motor
These are the earliest DC motors, dating back to the original design of the motor, and while they are still popular in paper machines, cranes, and rolling mills, they have faded away recently.
When it comes to DC motor control, the following are the most commonly used methods:
Direction controller: H-bridge
An H-bridge circuit is one of the easiest ways to control a DC motor, four switches controlled in pairs can be found within such a motor, when either of the two pairs is closed, they immediately complete the circuit and subsequently power the motor, H The bridge can also control the speed.
Speed Controller: Pulse Width Modulation (PWM)
The PWM circuit changes the speed of the motor by simulating the increase or decrease of the power supply. PWM is easy to apply and inexpensive, which is one aspect of the motor speed that can be continuously controlled. These controllers work by sending periodic pulses to the motor, as if the motor is powered by high or low voltage when using the coil inductance of the regular pulses to bring a certain constrained smoothing effect.
Why choose a DC motor?
When an AC motor is an option, a DC motor is highly recommended as the first choice, which has some advantages over an AC motor. For example, they are excellent when high starting torque is required for driving high inertia loads, and unlike AC motors, it is easy to control the speed of DC motors.
They are also ideal when DC motors need to be powered from a low voltage DC source such as solar panels or batteries. If you quickly reverse the direction, you'll find that a DC motor works well. Unlike AC motors, DC motors can be started and stopped easily and quickly.
Applications of DC Motor Controllers
There are various DC motors on the market now, we use them widely, at home, DC motors can be used in toys, tools and other household appliances. In industry, their needs include running across carousels to conveyor belts, as well as reversing. DC motors are used to power pumps based on their excellent motion responsiveness and ease of variable speed, and they are the first choice for fans due to their energy saving mechanism. DC motor toys have a variety of voltages and therefore require different types of movement and speed. DC motors for electric vehicles are preferred because of their durability and energy efficiency. Electric bikes have DC motors in both the rear and front wheel hubs to achieve the required power levels and torque.