Composition of speed and current double closed loop DC speed regulation system
The output of the speed regulator is used as the input of the current regulator, and the output of the current regulator is used to control the power electronic converter UPE.
From the closed-loop structure, the current loop is inside, called the inner loop; the speed loop is outside, called the outer loop.
This forms a double closed loop speed control system for speed and current.
System circuit structure
The role of the limit:
Output limiter voltage U*im of the speed regulator ASR
- the maximum value of the current given voltage, which limits the maximum current;
Output limiter voltage Ucm of current regulator ACR
The maximum value of Uc, which limits the maximum output voltage Udm of the power electronic converter.
Circuit diagram of double closed loop DC speed regulation system
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