Title :
A study of instantaneous value control with voltage variation compensation for UPS inverters
Author :
Igarashi, Yoshitaka ; Izumi, Tomonori ; Yokoyama, Tomoki ; Haneyoshi, Toshimasa
Author_Institution :
Tokyo Denki Univ., Saitama, Japan
Abstract :
A new approach for real time digital feedback control of PWM inverter is proposed, in which an instantaneous value control with voltage variation compensation is achieved. In this scheme, the sampling frequency of the inverter becomes half of the carrier frequency, and it is suitable to implement for higher carrier frequency. In this paper, the output characteristics of the inverter for various LC filter components are evaluated. Also the influence of the capacitor current feedback signal for the output characteristics are verified. From the view point of UPS applications, the advantages and disadvantages are discussed though simulations and experiments, the superiority of the proposed control law is verified
Keywords :
DC-AC power convertors; PWM invertors; compensation; control system analysis; control system synthesis; digital control; feedback; power engineering computing; uninterruptible power supplies; voltage control; LC filter components; UPS inverters; capacitor current feedback signal; carrier frequency; control design; control law; control performance; control simulation; instantaneous value control; output characteristics; real time digital feedback control; sampling frequency; voltage variation compensation; Capacitors; Feedback control; Filters; Frequency; Integrated circuit modeling; Pulse width modulation inverters; Sampling methods; Switches; Uninterruptible power systems; Voltage control;
Conference_Titel :
Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the
Conference_Location :
Osaka
Print_ISBN :
0-7803-7156-9
DOI :
10.1109/PCC.2002.997596
