AC Frequency Conversion Motor
The induction motor AC drive system is the new technology developed in 1990s.The working principle is that, the three phase AC is sent to the stator winding, generating rotor winding and current. The rotor will then rotate along with the rotation direction of magnetic field.
The vector controlled frequency controlling technology is applied to the motor controller.
The predominant feature of AC motor is no need of carbon brush, and no limitation to the maximum current. So that the motor will get larger power, bigger braking torque force, and run with faster speed.
The heat of AC motor generates mainly at the stator coil of motor shell, easy for cooling and heat radiating.
Compared to the DC motor, the AC motor is equipped with fewer components and no need of easy wearing parts. So it hardly needs maintenance, and is more efficient and reliable.
Thanks to the development on frequency conversion technology of AC induction motor, and improvement on the powerful semiconductor and microprocessor, the induction motor AC drive system is with higher efficiency, smaller size, lighter weight, simpler structure, easier cooling system and longer working time.
The speed regulation range of AC drive system is wide, so that low speed and constant torque operation or high speed and constant power operation is realized, which greatly meet the practical demands of electric vehicle.
Regenerative braking is a type of non-contact braking with simpler structure. No matter whether the driver brakes by braking pedal or by direction switching, the motor will always be at generating state, and transform the electromagnetic torque into braking torque. As a result, the wear of braking sheet is reduced to the minimum and the mechanical wear is also greatly reduced, so that the maintaining fee is reduced and the operation cost is lowered down. The AC motor has higher efficiency in operating and braking. Regenerative energy will be generated when braking or switching, the harder, the more. The energy storage device of AC drive system will be turned on automatically during braking or switching, and send the energy back to battery, prolonging the battery working time. For some DC drive truck lift, the regenerative braking works only for hard braking, which means part of the regenerative heat has been transformed into heat. However, for AC motor, regenerative energy will be generated and persisted at any case, with higher regenerating efficiency.
1. Energy recovery in deceleration.
2. Energy recovery in grip brake or foot brake.
3. Energy recovery in grade descending.
4. Energy recovery in parking by switching operation bar.
AC motor drive system
New type of AC drive motor and hydraulic motor, no need to change the electric brush
or contactor, which will greatly reduce the maintaining cost and give you more economy.
Neutral gear locking
Start the forklift only in case of neutral gear, to ensure more convenient and safer operation.
Emergent stop button
Cut off all power sources in emergency, ensuring safer and more convenient operation.
Good waterproof performance
Waterproof and dustproof design for installation parts, and totally enclosed radiating fan duct design for central control unit.
Parking break locked
Press the locking button on the parking break handle for unlocking.
Thanks to the rotary encoder controlled, and integrated steering system, it is possible to realize the biggest turning direction with the smallest operation force.
Advance AC control system
Equipped with energy regenerating device, which will automatically charge the battery and prolong the working period of forklift when loosening the accelerate panel.
The inner safety switch ensures safer operation.
The service life is more than 10 million times.
Fork buffer system
The fork descending speed will fall down 3.5 seconds before it reaching the ground, reducing both collision and noise.