BLDC循环泵应用

BLDC Circulator PUMP Application

系统结构

System configuration

PUMP控制特征

PUMP Control Feature

control IC：Renesas RL78/R5F104BC

Motordrive:     FOC Sensor-less

SoundPressure : Lower than 43db

Liquid  Temperature: +2~110 degree C

SystemMode : Fixed Pressure ,Fixed Speed, Proportional Pressure   & Optimum Work.

PowerControl: Max Power limited, Night mode

工作状态

WORK STUTAS

智能控制（比例调节）

SmartControl (Proportional Pressure)

匹配智能系统要求

Intelligent Match System Requirement

After some times ,work duty change For a suitable pressure curve, then  Q & H are best for system requirement. The power of pump is in a lower level

控制理论

Control theory 

Pump Mach Power :       

Pump Motor torque power:      

Normally, Mach Power  isration part of Torque power, so

                     N=k*P

In FOC motor control, we can calculate the power, if have thepreset

Work point  and H/Q , we cancalculate H/Q at any work duty.