Load identification based proportional plusintegral-plusderivative control method and its uninterrupted power supply

Application Number: 00117185
Application Date: 2000.06.15
Publication Number: 1329390
Publication Date: 2002.01.02
Priority Information:
International: H02M7/00;H02M7/42
Applicant(s) Name: Huawei Electric Technology Co. Ltd. Shenzhen City
Address:
Inventor(s) Name: Sun Wenhuan;Zhou Dangsheng;Zhang Yunxiang
Patent Agency Code: 44217
Patent Agent: guo weigang
Abstract The present invention relates to a load identification based UPS control method and its controlled UPS, and is characterized by that it utilizes the calculation of value of heavy current sampling point size count value and comparison of it with reference value A to identify UPS load type, then according to this, regulates paramter Kp of PID proportional regulator, i,e. if it is non-linear UPS load, the Kp takes higher value, and if it is linear load, the Kp takes smaller value, so that it can implement the control of output voltage waveform of inverter. The CPS controlled by using this digital control method possesses the advantages of low cost and high reliability.