the-difference-between-permanent-magnet-pump-and-brushless-dc-water-pump
There are significant differences between permanent magnet pumps and brushless DC water pumps in many aspects. The following is a detailed summary of the differences between the two:
1. Working principle and driving method:
Permanent magnet pump: Apply permanent magnet drive technology and rely on permanent magnet motor to drive. It can achieve non-contact transmission without the mechanical contact of traditional motors, with low friction loss and high efficiency.
Brushless DC water pump: driven by DC power, it is a brushless and pollution-free water pump. The stator and circuit board of the motor are potted with epoxy resin and completely isolated from the rotor, which solves the leakage problem caused by long-term diving. It can be installed underwater and is completely waterproof.
2. Performance characteristics:
Permanent magnet pump:
High efficiency and energy saving: Due to the advantages of permanent magnet drive technology, permanent magnet pumps have lower energy consumption and higher energy utilization.
Low noise: Compared with DC water pumps, it has less vibration and noise, and is more environmentally friendly to use.
Small size: no mechanical transmission parts are required, the structure is simplified, small size, light weight, suitable for environments with limited space.
Brushless DC water pump:
Long life: no maintenance required, strong anti-interference ability, smooth operation.
Adjustable: The water pump parameters, such as head, can be adjusted according to customer requirements.
Wide voltage operation: It has wide voltage operation capability and can adapt to different voltage environments.
3.Control method:
Permanent magnet pump: The action control is more subtle and requires complex magnetic circuit control, but it can provide more stable water flow and water pressure to meet higher requirements in the working environment.
Brushless DC water pump: Action control is relatively easy to implement, usually using an automatic speed control system, and the inverter output voltage is controlled according to the PWM method.
4. Application scenarios:
Permanent magnet pump: Especially suitable for use in scenarios with high energy saving requirements, such as agricultural irrigation, sewage treatment, industrial cooling and other fields.
Brushless DC water pump: usually used in tap water supply, ships, solar energy, etc. Because it is simple to use and easy to install, it is also suitable for use in outdoor, wild and other environments.
