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Schematics of the microgrid at RUB College of Science and Technology. 

Schematics of the microgrid at RUB College of Science and Technology. 

Source publication
Conference Paper
Full-text available
This paper presents an analytical method developed to explain the mechanism of harmonic transfer between the ac and dc sides of a single-phase inverter in a PV microgrid. The model explains how the feed-forward of the current from the ac side of the PV-inverter into the control system, causes even harmonics on the dc voltage. It further shows how t...

Contexts in source publication

Context 1
... single-phase microgrid with a photovoltaic source repre- sents a power generation system in an isolated community as indicated in Figure 1. A boost controller is used to maintain a stable dc voltage v d (t). The dc voltage is converted to ac by a solid-state dc/ac inverter based on pulse-width modulation (pwm) that is supervised by a control unit. The pwm volt- age v pwm (t) is filtered using a low-pass filter to achieve a smooth ac voltage waveform v ac (t) to the load. The inverter's controller keeps the grid frequency stable on the ac voltage v ac (t) by using the ac current i ac (t), the dc voltage v d (t), and the reference angle frequency ω o as a reference. The load is assumed linear. The output voltage should ideally be given ...
Context 2
... grouping the subsystems in H 1 and H 2 as shown in Figure 1, the system can be abstracted to two linear operations, Frequency [Hz] -80 ...
Context 3
... ac (ω) Figure 1 where the assumption that v ac (t) ∝ v control (t) has been made, is shown in Figure 4. The subsystems H 1 and H 2 are linear and time invariant. This means that no new frequency components will be generated by these. From subsection A it is seen that influence from the ac voltage v ac (t) through the inverter on v d (t) is given ...
Context 4
... single-phase microgrid with a photovoltaic source repre- sents a power generation system in an isolated community as indicated in Figure 1. A boost controller is used to maintain a stable dc voltage v d (t). The dc voltage is converted to ac by a solid-state dc/ac inverter based on pulse-width modulation (pwm) that is supervised by a control unit. The pwm volt- age v pwm (t) is filtered using a low-pass filter to achieve a smooth ac voltage waveform v ac (t) to the load. The inverter's controller keeps the grid frequency stable on the ac voltage v ac (t) by using the ac current i ac (t), the dc voltage v d (t), and the reference angle frequency ω o as a reference. The load is assumed linear. The output voltage should ideally be given ...
Context 5
... grouping the subsystems in H 1 and H 2 as shown in Figure 1, the system can be abstracted to two linear operations, Frequency [Hz] -80 ...
Context 6
... ac (ω) Figure 1 where the assumption that v ac (t) ∝ v control (t) has been made, is shown in Figure 4. The subsystems H 1 and H 2 are linear and time invariant. This means that no new frequency components will be generated by these. From subsection A it is seen that influence from the ac voltage v ac (t) through the inverter on v d (t) is given ...
Context 7
... single-phase microgrid with a photovoltaic source repre- sents a power generation system in an isolated community as indicated in Figure 1. A boost controller is used to maintain a stable dc voltage v d (t). The dc voltage is converted to ac by a solid-state dc/ac inverter based on pulse-width modulation (pwm) that is supervised by a control unit. The pwm volt- age v pwm (t) is filtered using a low-pass filter to achieve a smooth ac voltage waveform v ac (t) to the load. The inverter's controller keeps the grid frequency stable on the ac voltage v ac (t) by using the ac current i ac (t), the dc voltage v d (t), and the reference angle frequency ω o as a reference. The load is assumed linear. The output voltage should ideally be given ...
Context 8
... grouping the subsystems in H 1 and H 2 as shown in Figure 1, the system can be abstracted to two linear operations, Frequency [Hz] -80 ...
Context 9
... ac (ω) Figure 1 where the assumption that v ac (t) ∝ v control (t) has been made, is shown in Figure 4. The subsystems H 1 and H 2 are linear and time invariant. This means that no new frequency components will be generated by these. From subsection A it is seen that influence from the ac voltage v ac (t) through the inverter on v d (t) is given ...

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