Title :
A constant power control strategy of electronic ballast for HID lamp
Author :
Xu, Jianbing ; Chen, Min ; Zhang, Ting ; Qian, Zhaoming
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
A novel and efficacious constant power control strategy of electronic ballast for HID lamp is proposed in this paper. The constant power control gear mainly consists of an 8-bit micro-controller and a PWM control IC. The micro-controller samples the lamp voltage, and calculates an appropriate value of lamp current. The PWM IC controls the lamp current equal to the calculated current value. Thus constant power can be approached. The digital-analog mixed control circuit is low cost, reliable and adaptive. A novel hysteresis algorithm provides an excellent performance of the constant power control gear, the variation of the lamp power is less than 1%
Keywords :
digital-analogue conversion; discharge lamps; lamp accessories; lighting control; microcontrollers; power control; 8 bit; PWM control integrated circuit; constant power control; digital-analog mixed control circuit; electronic ballast; high intensity discharge lamp; hysteresis algorithm; lamp current; lamp voltage; microcontroller; Circuits; Costs; Digital control; Digital-analog conversion; Electronic ballasts; Gears; High intensity discharge lamps; Power control; Pulse width modulation; Voltage control; HID lamp; constant power;
Conference_Titel :
Industry Applications Conference, 2006. 41st IAS Annual Meeting. Conference Record of the 2006 IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
1-4244-0364-2
Electronic_ISBN :
0197-2618
DOI :
10.1109/IAS.2006.256669
