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... of the UPS system consists of three conversion stages: rectifier at the input stage, DC link with the battery, and inverter or DC converter in the output stage, depending on the load (AC or DC), Figure 1. In addition, the UPS system may also have a bypass line that supplies power directly from the grid to the load. ...
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... basic functional parts of this integrated circuit are; error amplifier, current amplifier modulator, compensation ramp and PWM comparator. Figure 10. shows the basic control structure of the PFC controller coupled to the power part of the current controlled boost PFC converter. ...
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... block diagram of the model in which the connection between UPS system control section and power section is achieved, is shown in Figure 11. The power section is realized within the PLECS Circuit block while the control part is realized within the PFC controller block. ...
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... power section is realized within the PLECS Circuit block while the control part is realized within the PFC controller block. The topology of the simulated converter within the PLECS Circuit block is shown in Figure 12, and model parameters are given in Table 4. A detailed view of the PFC controller block is shown in Figure 13., and block parameters are given in Table 5. Figure 11. ...
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... topology of the simulated converter within the PLECS Circuit block is shown in Figure 12, and model parameters are given in Table 4. A detailed view of the PFC controller block is shown in Figure 13., and block parameters are given in Table 5. Figure 11. The block diagram of the connection between UPS system control section and power section ...
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... topology of the simulated converter within the PLECS Circuit block is shown in Figure 12, and model parameters are given in Table 4. A detailed view of the PFC controller block is shown in Figure 13., and block parameters are given in Table 5. Figure 11. The block diagram of the connection between UPS system control section and power section ...
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... parameters obtained by optimization are as follows: P = 0.0011, I = 0.478778. Figure 14. shows the comparison of the input current response with the fixed duty cycle (D = 0.2) and the input current response with the built-in PFC regulator. ...
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... result of the use of the PFC regulator is the input current of approximately sinusoidal waveform without phase shift in relation to the voltage, i.e., the approximate unit power factor is obtained. Figure 14. Waveforms of input voltage and input current with or without PFC Figure 15. ...
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