Z-Source Inverter for Motor Drives

In this paper, theoretical results are shown for several novel inverters. These inverters are similar to the ZSource inverters presented in previous works, but have several advantages, including in some combination; lower component ratings, reduced source stress, reduced component count and simplified control strategies. Like the Z-Source inverter, these inverters are particularly suited for applications which require a large range of gain, such as in motor controllers or renewable energy. Simulation and experimental results are shown for one topology to verify the analysis. Also, a back-to-back inverter system featuring bidirectionality on both inverters, as well as secondary energy storage with only a single additional switch, is shown.

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“…The desired AC output can be obtained by controlling the shoot-through duty cycle of the Z-source. The output voltage can also be boosted; therefore Z-source converters can be used to mitigate the voltage sags and also they add on the other benefits like reliability, less harmonics and can have wider range of output voltages [2]- [4].…”

Section: Introductionmentioning

confidence: 99%

“…Z-source dc-dc converter (ZSC) is proposed in [2]. H-bridge has been used to operate in four-quadrant operation for motor drives for many years, but it utilizes four active switches which are expensive and large.…”

Section: Introductionmentioning

confidence: 99%

Closed Loop Control of Bi-Directional Soft Switched Quasi Z-Source DC-DC Converter

Suresh¹,

Rashmi²,

Madusuthanan³

et al. 2016

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Quasi Z-source converter is a single stage soft switched power converter derived from Z-source converter topology, employing an impedance network coupling the source with the converter. The quasi Z-source source converter can buck or boost the voltage and current flow is bidirectional. The duty cycle of the switch can be adjusted to maintain constant voltage during load change. To obtain constant output voltage, proper controller design is a must. This paper presents closed loop control of quasi Z-source converter using PI controller where controller parameters are estimated using the small signal model of the entire system. The transfer function of the system with AC sweep is used to obtain appropriate proportional and integral gain constants to reduce transient dynamics and to reduce steady state error.

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Z-Source Inverter for Motor Drives

Cited by 342 publications

References 9 publications

Energy control strategies for the Fuel Cell Hybrid Power Source under unknown load profile

Energy control strategies for the Fuel Cell Hybrid Power Source under unknown load profile

A Class of Quasi-Z-Source Inverters

Closed Loop Control of Bi-Directional Soft Switched Quasi Z-Source DC-DC Converter

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