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Journal of Shanghai University（Natural Science Edition）

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Regulated AC Power Supply for Base Station Using Double PWM

JIANG You-hua1,2,FANG Yong1,GU Sheng-jian2   

  1. 1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China；
    2. Hangzhou Qiantang River Electric Group, Hangzhou 311243, China

  • Received:2007-01-24 Revised:1900-01-01 Online:2007-12-20 Published:2007-12-20
  • Contact: JIANG You-hua1

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Abstract:

A novel regulated AC power supply unit for base stations using double PWM is presented in this paper. The main circuit and its principle of operation are introduced, and the power flow analyzed. Compared with conventional regulated AC power supply, the proposed method has high efficiency and faster response, and does not use a charcoal brush therefore is free of mechanical fault. It also avoids the cyclecurrent fault existing in AC voltage regulators using SCR. Simulation and experiments show that the proposed scheme is feasible.

Key words: AC voltagestabilized source, power flow

, series compensator,

double PWM