- No : 21537
- Release Date : 2018/08/22 16:28
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Energy consumption
Household air-conditioners are often advertised by emphasizing that it saves energy by using an inverter. If a three-phase motor is driven by an industrial inverter, does it also save energy?
If it does, how much energy does it save?
- Category :
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Answer
Using a general-purpose inverter to drive a three-phase induction motor can save energy under the following two types of loads (application):
1. Constant-torque load (load of which torque is constant even when speed changes)
This load type is represented by a conveyor and cart and reducing the speed saves energy.
2. Square variable-torque load (load of which torque is in proportion to the square of speed)
This type of load is represented by a fan, pump, and blower. Since the shaft power is in proportion to the cube of speed, reducing the speed drastically saves energy. For example, reducing the speed to 1/2 reduces energy consumption to 1/8.
The energy saving effect depends on the load and speed.
- Product Name
- Inverter, magnet motor drive
- Series
- Others