Research And Design Of STATCOM Controller Based CPLD

Through to research the principle of the static synchronous compensator (STATCOM),has established its mathematical model,and has analyzed the STATCOM movement characteristic in this foundation.Uses in the STATCOM control system the instantaneous Electric Capacity,requests the multi-goals in view of the electrical power system to the control the characteristic,has designed the multi-goals coordination controller for STATCOM,and has produced based on the complex programmable logical device(CPLD) control system concrete realization.The fault that may appear for STATCOM is studied,have analyzed that fault is for the influence of STATCOM and system,and have established corresponding protection measure.Introduced the blockade pulse movement way,has analyzed the STATCOM monitor system request.Aim at the request of STATOM to the trigger pulse generator,uses CPLD to be high speed,the parallel processing ability,designed the STATCOM pulse generator. This pulse generator accepts digital signal processor(DSP) through the interface of I/O to write the SPWM control variable(δ,λ),then by CPLD timing produce SPWM pulse signal.CPLD after the initialization may be independent to DSP carries on the trigger pulse signal the formation.Developing platform using MAX+plusⅡhave designed the digital logic of SPWM pulse generator with VHDL language.Through emulation,have verified the correctness of every modular logic design,show that this SPWM pulse generator precision is high,stability is good.