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Speed torque characteristics of various types of loads

2020-01-19 17:39

Characteristics of different types of load: In electric drives the driving equipment is an electric motor. Selection of particular type of motor driving an mc is the matching of speedtorque characteristics of the driven unit and that of the motor. Different types of loads exhibit different speed torque characteristics.In such cases the torque and the speed are constant. The characteristics for motor and machine are stated as the ratio between speed and torque or output. The torque characteristics have already been discussed. The characteristics of the machine can be divided into four groups. Types of motor load speed torque characteristics of various types of loads

Motor torque, load torque and selection of motors 243 2. 1 Motor speedtorque curve Refer to Figure 2. 1 where T st starting torque or breakaway torque. T m minimum, pullin or pullup torque. T po pullout, breakdown or maximum torque, obtainable over the entire speed range.

Speed torque characteristics of various types of loads free

Jul 11, 2019  Torque Slip Characteristics of Three Phase Induction Motor. The torque slip curve for an induction motor gives us the information about the variation of torque with the slip. The slip is defined as the ratio of difference of synchronous speed and actual rotor speed to the synchronous speed

Series DC motor. In a series DC motor the field is connected in series with the armature. The field is wound with a few turns of large wire because it must carry the full armature current. A characteristic of series motors is the motor develops a large amount of starting torque. However, speed varies widely between no load and full load.

Generally, three characteristic curves are considered important for DC motors which are, (i) Torque vs. armature current, (ii) Speed vs. armature current and (iii) Speed vs. torque. These are explained below for each type of DC motor. These characteristics are determined by keeping the following two relations in

Torque Speed Characteristics of a Blower Load 1. 1 Constant torque type load Figure1: Connectiondiagram 1. 2 Torque proportional to speed The characteristics of the charge imply that the torque required increases with the speed. This par

Characteristics of different types of load: In electric drives the driving equipment is an electric motor. Selection of particular type of motor driving a mc is the matching of speedtorque charal of the driven unit and that of the motor.

Unlike fixed voltage and resistive loads, the IV characteristics of motor loads are nonlinear. Motor IV curves differ considerably among motor types, and are also dependent on the torque and speed characteristics of the mechanical load being driven by the motor. In Sections thru, IV equations for three DC motor types are

Oct 04, 2017  Speed Torque Characteristics of Induction Motor: Speed Torque Characteristics of Induction Motor From Eq. 1. 27 it can be observed that the maximum torque is independent of rotor resistance. However, the slip at which the maximum torque occurs changes with rotor resistance.

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Aug 27, 2019 Figure 5. 59 shows the speedtorque characteristic of an induction motor with a fantype load (load torque roughly proportional to square of speed). The steady operating point is the intersection point P of the two characteristics.

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