The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper a three-phase three-level Neutral Point Clamped (NPC) inverter is used for driving Induction Motor (IM) operating under Direct Torque Control (DTC) scheme. The three-level NPC inverter has 27 combinations of switching states. However, there are redundancies in these combinations and only 19 voltage vector are considered in the order to minimize the Common Mode (CM) voltage stress on...
In this paper, a three-level inverter fed induction motor drive operating under Direct Torque Control (DTC) is presented. DTC do not show good performance in low speed region due to stator flux demagnetization that relates to variation in stator resistance. Here, a sinusoidal wave is used as dither signal of minute amplitude (for torque hysteresis band and flux hysteresis band respectively) in the...
Industrial and traction drives (used in automobile and electric locomotives) using induction motor, require a good control over torque and speed, reversible and regenerative speed control operation. Hence the drive topology requires both ac to dc conversion and dc to ac conversion system. In this paper, a three-level utility friendly the front-end neutral point clamped (NPC) converter system having...
This paper presents a three-level neutral point clamped (NPC) inverter fed induction motor for high power traction applications in Indian Railway Technology. This drive is operated under direct torque control (DTC) method, and it is well known for faster torque and flux control system. This method is simple to implement but DTC do not show good performance in low speed region due to two reasons. First...
Recently, multilevel converters have attracted attention in medium-voltage and highpower applications due to reduced voltage stress on power semiconductor switches, reduced voltage harmonics, and electromagnetic interferences. For higher voltage and high-power applications, the switching frequency and device ratings are limited.
In this paper, a three-level inverter-fed induction motor drive operating under Direct Torque Control (DTC) is presented. A triangular wave is used as dither signal of minute amplitude (for torque hysteresis band and flux hysteresis band respectively) in the error block. This method minimizes flux and torque ripple in a three-level inverter fed induction motor drive while the dynamic performance is...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.