A Direct Peak DC-link Boost Voltage Control Strategy in Z-Source Inverter

Ding, Xinping; Qian, Zhaoming; Yang, Shuitao; Cui, Bin; Peng, Fang‐Zheng

doi:10.1109/apex.2007.357583

Cited by 61 publications

(40 citation statements)

References 4 publications

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“…There are four methods for controlling the ZSI dc-link voltage, which are: capacitor voltage control [12]- [19], indirect dc-link voltage control [19], [20], direct dc-link control [21], [22] and unified control [23]. Table 3, presents a review of the above mentioned control methods with their drawbacks.…”

Section: Zsi DC Link Voltage Controlmentioning

confidence: 99%

Z-Source Inverter for Automotive Applications

Ellabban¹,

Mierlo²

2012

New Generation of Electric Vehicles

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Section: Zsi DC Link Voltage Controlmentioning

confidence: 99%

Z-Source Inverter for Automotive Applications

Ellabban¹,

Mierlo²

2012

New Generation of Electric Vehicles

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“…Therefore, the ZSI can buck and boost voltage to a desired output voltage that is greater than the available DC bus voltage. The approaches to control constantly and stably the output voltage of the ZSI, many studies such as modified SVM (space vector modulation) method under d-q coordinate transformation [3] also the calculation method of the boost factor and switching duration time by using PID control [4][5] have been done. Although all of them have showed a good performance but there are still so many problems that requires the complex control algorithm and the circuit for sensing the three-phase output voltages.…”

Section: Introductionmentioning

confidence: 99%

Output voltage constant control of three-phase Z-source inverter

Kim

Jung

Lim

et al. 2012

2012 IEEE International Symposium on Industrial Electronics

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This paper proposes a new constant control method of the output voltage of a voltage-fed three phase Z-source inverter (ZSI), in case of the capacitor voltage variations in Z-source network or the heavy changes of load. The modulation index for the reference output voltage of the ZSI can be calculated by the basic definition of the ZSI, the input DC voltage and capacitor voltage in Z-source network. And, the output voltage of the ZSI is controlled by the modified SVM(space vector modulation) with the calculated modulation index. By the proposed method, the modulation index of the output voltage is closely following in the reference modulation index. To verify the validity of the proposed method, PSIM simulation was achieved and a DSP controlled 1[kW] three-phase Z-source inverter was manufactured. Despite the input DC voltage of the ZSI is heavily changed from 80[V] to 110[V] (or from 120[V] to 90[V]) and the load is changed into three-steps (20[Ω], 40[Ω], 80[Ω]), the capacitor voltage of Z-source network kept up 168[V], therefore, the output phase voltage could be controlled by the reference output voltage (68[V RMS ]) according to the capacitor voltage.

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“…Such a pulse voltage introduces difficulty in detecting its peak value directly. A peak value sensing circuit is introduced in [8], and then a direct PDV controller is designed based on it. The additional sensing circuit remains to be carefully designed and may increase the complexity of the design.…”

Section: Introductionmentioning

confidence: 99%

“…For ZSIs, the control of dc-link stage is a key point while the control of ac side is similar to that in voltage-source inverter, therefore the controller design is focused on how to control the dc-link voltage. Existing control strategies of ZSIs including the following two types: the Z-source capacitor voltage (ZCV) control [7] and the peak dc-link voltage (PDV) control [8][9]. For ZCV control strategy, the capacitor voltage is controlled to a constant value.…”

Section: Introductionmentioning

confidence: 99%

A new direct peak dc-link voltage control strategy of Z-source inverters

Tang

Wei

Xie

2010

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a new direct peak dc-link voltage control strategy of Z-source inverters. For Z-source inverters, the peak dc-link voltage is the actual voltage fed to the inversion stage. Controlling the peak dc-link voltage at the constant level can effectively decrease the voltage stress and simplify the design process of the inversion stage. A direct peak dc-link voltage detection method is developed with a simple sampling circuit, and then controlled directly. Therefore, the constant peak dc-link voltage can be achieved in different input and load conditions. The peak ac output is calculated in real-time by sampling the ac phase voltage, and it is controlled to the desired value without steady-state error. With the proposed direct peak dc-link voltage control and peak ac output control, both the peak dc-link voltage and ac output is controlled to a desired level under different input and load condition. Experimental results are presented to demonstrate the feasibility of the proposed control strategy.

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A Direct Peak DC-link Boost Voltage Control Strategy in Z-Source Inverter

Cited by 61 publications

References 4 publications

Z-Source Inverter for Automotive Applications

Z-Source Inverter for Automotive Applications

Output voltage constant control of three-phase Z-source inverter

A new direct peak dc-link voltage control strategy of Z-source inverters

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