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This paper presents the prediction of dynamic and steady state operation of the single phase capacitor start capacitor run induction motor for different values of capacitor and same frequency of voltage supply at no-load and full load condition with open loop and closed loop system. AC power from the mains is considered as a reference and multiple possibilities of a single inverter topology are fed...
The comparison of control strategies of two different topologies of five level diode clamped multilevel inverter (DCMLI), fed by a photovoltaic (PV) module is presented in this paper. The inverters are supplying various dynamic loads. Different types of single phase induction motors have been used as dynamic loads. The control strategies implemented are Phase disposition (PD), Phase opposition disposition...
Multilevel inverter has become most popular over the years in the area of high power medium voltage energy control. With the recent advancement in Power semiconductor switches, multilevel inverter fed induction motor drives are extensively used in industries. Common mode voltage (CMV) is the voltage measure between star point of load and system ground. CMV is produced in inverter causes current to...
This paper provides a new methodology for setting harmonic limits in power systems. This approach is designed to replace the existing harmonic limits detailed in IEC 61000.3.6 and IEEE 519. The methodology provides for replacing the ∼40 or more individual harmonic with three new limits. The new limits are low frequency weighed VTHD, high frequency weighed VTHD and the even harmonic components of V...
A variable frequency drive operated motor was used to inject harmonics onto a bus bar on which a smaller line connected test motor is operating. The effect of voltage distortion on the operation of each test motor is investigated by measuring their operating efficiency. The motors tested comprise integral horsepower three phase motors of EPACT and NEMA Premium design as well as single phase motors...
Multi-level inverter technology has emerged recently as a very important alternative in the area of medium-voltage high-power energy control. Due to higher number of dc voltage sources, lower EMI, requirement of semiconductor power devices with less blocking voltage, lower % THD in output voltage and less stress on insulation, they are widely used. However, it has some disadvantages as complicated...
The main objective of this paper is to control the speed of an induction motor by using three level diode clamped multilevel inverter. To obtain high quality sinusoidal output voltage with reduced harmonics, multicarrier PWM control scheme is proposed for diode clamped multilevel inverter. An open loop speed control can be achieved by using V/f method. This method can be implemented by change the...
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