The principle of the motor and the generator is basically the same, but the direction of energy conversion is different. The generator converts the mechanical energy and kinetic energy into electrical energy through the load (such as water power and wind power). If there is no load, the generator will not have current flow. The combination of electric motors, power electronics and microcontrollers has formed a new discipline called motor control. Before using the motor, it is necessary to know whether the power supply it uses is DC or AC. If it is AC, it is also necessary to know whether it is three-phase or single-phase AC. Connecting the wrong power supply will cause unnecessary losses and dangers. After the motor rotates, if the load is not connected or the load is very light and the motor rotates fast, the induced electromotive force will be strong. At this time, the voltage across the motor is , the voltage provided by the power supply minus the induced voltage, so the current is weakened. If the load of the motor is heavy and the rotation speed is slow, the relative induced electromotive force is small, and therefore the power supply needs to provide a large current (power) to output/do work corresponding to the required large power.
Output: Refers to the work that the motor can perform in unit time, and is determined by the speed and torque of the motor. Rated output: The motor can exert its best characteristics under rated voltage and rated frequency, and at the same time continuously generate various energy outputs, such as running speed or torque. Usually the motor nameplate will indicate the value of the rated output. Asia is usually measured in watts (W), while Europe and the United States use horsepower (HP).
Rated power (capacity): rated output power (watts). Horsepower: One of the units of motor output power is horsepower (Horse power, referred to as HP), 1 horsepower (HP) = 746 watts (Watts)
Rated voltage: the allowable input voltage during use. When the rated voltage is exceeded, the motor can still run normally, but the service life of the capacitor will be significantly shortened, and even after long-term operation, it will generate high heat and burn out. The units used are expressed in V (volts).
Torque Starting torque: refers to the torque generated instantly when the motor is driven. If the motor is subjected to a larger friction restraint load than this torque, the motor will not be able to start. Also called starting torque.
Stop torque: refers to the maximum torque that the motor can output under a certain voltage and a certain frequency. Once the load carried exceeds this torque range, the motor will stop immediately.
Rated torque: refers to the torque when the motor can continuously generate rated output under rated voltage and rated frequency. It is the torque generated at the rated running speed.
Rotation speed Rated running speed: refers to the running speed of the motor at rated output, which is the ideal running speed for the motor to be used without faults.
No-load running speed: refers to the running speed of the motor under no-load state.
CW/CCW: refers to the running direction of the motor. CW is the clockwise direction viewed from the end of the output shaft, while CCW is the counterclockwise direction.