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In this paper, on the basis of single phase high frequency link matrix inverter and Z source network, a single-phase Z source high frequency link matrix inverter is proposed. And use a modulation strategy named pre and post coordinated SPWM. which using boost pulse width modulation as the former, and the matrix converter work in an all ‘1’ state when the former direct connection. Z source inverter...
This paper proposes a novel quasi-Z source network with multiple switch-inductor (SL) cells and Cockroft-walton (CW) voltage multipliers. The proposed topology can further enhance the boost ability as the increasing of the count of the cascaded SL cells and CW cells. The utilization of CW cells at the output side can greatly reduce the voltage stress of the diodes and active switch, which makes the...
Z-source neutral-point clamped multilevel inverter (Z-NP-MLI) used in solar grid connected applications due to their better performance related to conventional inverters. Normally, current controller based Pulse Width Modulation (PWM) approach is expected for any grid connected system. The space vector pulse width modulation (SVPWM) strategy is a prominent modulation technique for Z-source multilevel...
This paper presents a new family of hybrid Z-source boost dc–dc converters intended for photovoltaic applications, where the high step-up dc–dc converters are demanded to boost the low-source voltages to a predefined grid voltage. Because the boost capabilities of the traditional Z-source networks are limited, the proposed converters are composed of combine traditional Z-source networks in different...
This paper proposes an improved impedance (Z) source inverter topology. Compared to the traditional impedance-source inverter, it can reduce Z-source inverter device voltage stress significantly to perform the same voltage boost, and provides the controllable and stable output power in all load condition. The control strategy of the proposed Z-source inverter is exactly the same as the traditional...
Low cost and high reliability are the main issues considered in power converter design for hybrid electric vehicle. In this paper, a hybrid power converter is proposed for the power flow control of the battery-fuel cell hybrid electric vehicle. The converter consists of a unidirectional Γ Z-sourceconverter and a bidirectional DC-DC converter. By controlling the voltage of the Z source capacitor and...
In this paper, a control system for an Indirect Matrix Converter (IMC) with a Z source is proposed. This power topology and control is intended for the variable speed drive of a three phase induction motor. To maintain the low filtering needs of IMC, the z source inductors and capacitors values are sized to be similar to the input filter parameters. The resultant IMC has boost capabilities, thereby...
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