Maximum Boost Control of the Z-Source Inverter

Abstract

This paper explores control methods for the Z-source inverter and their relationships of voltage boost versus modulation index. A maximum boost control is presented to produce the maximum voltage boost (or voltage gain) under a given modulation index. The control method, relationships of voltage gain versus modulation index, and voltage stress versus voltage gain are analyzed in detail and verified by simulation and experiment.

Comparative Study of Z-source Inverter using Different Control Techniques

“…[11]In Maximum boost control method the six active states remain unchanged while all traditional zero state converted in shoot-through state. For that we use envelope of three sinusoidal signals as Vp and Vn.…”

“…Maximum envelope is known as Vp and minimum envelope as Vn. Triangular signal is used as carrier signal, so whenever the Vp is lower than triangular or the Vn is higher than the triangular, inverter will goes in shoot-through state otherwise it will act like traditional PWM mode [1]. If shoot-through duty ratio increases, the gain of inverter will increase i.e.…”

Multiphase Z-source inverter using maximum constant boost control

“…The main aim of the maximum constant boost control (MCBC) method used in threephase Z-source inverter is to ensure a maximum voltage gain under a constant shootthrough duty ratio [17][18]. This paper is an extension of three-phase Z-source inverter to n-phase Z-source inverter, where the main objectives of the MCBC have to be achieved, therefore n + 2 modulation curves are used in this control method.…”

Boost Converters for Gas Electric and Fuel Cell Hybrid Electric Vehicles

“…Two subsequent analyses addressed boost control of the Z-source inverter. The first derived a maximum boost control [8], which is really a maximum average boost control. The second derived a maximum constant boost control [9], which is important because it does not infringe on PWM control.…”