Control strategy of power converter system in the dual-power PV-grid system energy utilizing cascaded multilevel inverter

2013 ◽  
Author(s):  
I. R. Ibrahim ◽  
A. M. Omar ◽  
Z. Hussain
Keyword(s):  
Control Strategy ◽  
Power Converter ◽  
Multilevel Inverter ◽  
Grid System ◽  
System Energy ◽  
Cascaded Multilevel Inverter ◽  
Pv Grid ◽  
Dual Power

Power Converter for Dual-Power PV-Grid Energy System Utilizing Cascaded Multilevel Inverter

2014 ◽  
Vol 925 ◽  
pp. 505-509 ◽  
Author(s):  
Intan Rahayu Ibrahim ◽  
Ahmad Maliki Omar ◽  
Zakaria Hussain
Keyword(s):  
Solar Energy ◽  
Electrical Energy ◽  
Energy System ◽  
Power Converter ◽  
Maximum Power ◽  
Multilevel Inverter ◽  
Grid System ◽  
Peak Period ◽  
Pv Grid ◽  
Dual Power

The dual-power PV-grid system was introduced to manipulate the lower tariff rate at off-peak period and to reduce the capital installation cost of PV energy system. The power converter in the PV energy system is used to process solar energy captured by PV modules into usable electrical energy. In the dual-power PV-grid system, the power converter component is consists of a boost regulator to boost and regulate PV outputs to fixed voltage of 240V, 50Hz, a maximum power point tracker (MPPT) to derive maximum power from PV panels and a three operation modes of the battery converter to regulate charging current/discharging current under various PV output and load variation. In this project, a reduced switch and increased level of cascaded H-bridge multilevel inverter was introduced to convert the direct current (DC) output of the solar energy to alternating current (AC) signal to supply an AC load or to be integrated to the grid system. By adapting selective harmonic elimination (SHE) switching strategy, the inverter produces 21 levels of stepped sinusoidal output signal with resultant total harmonics distortion (THD) of 3.90%.

Dual-Power PV-Grid Energy System - An Alternative to the Off-Grid PV Energy System

2014 ◽  
Vol 960-961 ◽  
pp. 1531-1535
Author(s):  
Intan Rahayu Ibrahim ◽  
Ahmad Maliki Omar ◽  
Zakaria Hussain ◽  
Mohd Najib Mohd Hussain ◽  
Siti Zaliha Mohammad Noor
Keyword(s):  
Energy System ◽  
Grid System ◽  
System Configuration ◽  
Peak Period ◽  
Electricity Bill ◽  
Cost Of Energy ◽  
Pv Grid ◽  
Installation Cost ◽  
Electrical Data ◽  
Dual Power

The Dual-power PV-grid energy system was initiated to reduce the capital installation cost of PV energy system and to make use the lower tariff rate offered at off-peak period. In this paper, the system configuration, architecture and operation of the system are described and discussed. The prototype has been developed and runs 24-hours to supply the load. Meteorological and electrical data collected prove the successful of such system. The system is expected to reduce 89% of electricity bill with estimated cost of energy (COE) of USD1.15/kWh. It is suggested that the dual-power PV-grid system is beneficial to serve as an alternative implementation of the off-grid PV energy system.

scholarly journals Comparative analysis of PD-PWM technique in the set: Multilevel Inverter-Induction motor

2020 ◽  
Vol 21 (1) ◽  
pp. 1-8
Author(s):  
Yesenia Reyes Severiano ◽  
Jesús Aguayo Alquicira ◽  
Susana Estefany De León Aldaco ◽  
Luis Mauricio Carrillo Santos
Keyword(s):  
Energy Consumption ◽  
Comparative Analysis ◽  
Induction Motor ◽  
Induction Motors ◽  
Electrical Energy ◽  
Power Converter ◽  
Multilevel Inverter ◽  
Motor Speed ◽  
Three Phase ◽  
Cascaded Multilevel Inverter

Currently, induction motors are widely used in industry because have a high potential for the efficiency improvement. Therefore, a topic of interest to the industry is to reduce the energy consumption of induction motors, as they represent almost half of the total electrical energy consumption in the world. The energy consumption of electric motors can be reduced by using motors that are more efficient and by using power converters to feed the motors, thereby enabling accurate control according to the load. The function of the power converter is to modify the intrinsic characteristics of the induction motor (speed and torque). There are different topologies of the power converter commonly called inverter for induction motors. An inverter requires a modulation strategy for its operation, there are several modulation strategies that are used in the induction converter-motor assembly. This paper presents the comparative analysis of the influence of the phase disposition modulation (PD-PWM) strategy with different modulation indices, on parameters related to the output signal of a seven-level cascaded multilevel inverter as well as on the nominal working conditions of a three-phase induction motor.

Dual-Power PV-Grid Energy System – An Alternative to the Off-Grid PV Energy System

2014 ◽  
Vol 925 ◽  
pp. 661-665
Author(s):  
Intan Rahayu Ibrahim ◽  
Ahmad Maliki Omar ◽  
Zakaria Hussain ◽  
Mohd Najib Mohd Hussain ◽  
Siti Zaliha Mohammad Noor
Keyword(s):  
Energy System ◽  
Grid System ◽  
System Configuration ◽  
Peak Period ◽  
Electricity Bill ◽  
Cost Of Energy ◽  
Pv Grid ◽  
Installation Cost ◽  
Electrical Data ◽  
Dual Power

The Dual-power PV-grid energy system was initiated to reduce the capital installation cost of PV energy system and to make use the lower tariff rate offered at off-peak period. In this paper, the system configuration, architecture and operation of the system are described and discussed. The prototype has been developed and runs 24-hours to supply the load. Meteorological and electrical data collected prove the successful of such system. The system is expected to reduce 89% of electricity bill with estimated cost of energy (COE) of USD1.15/kWh. It is suggested that the dual-power PV-grid system is beneficial to serve as an alternative implementation of the off-grid PV energy system.

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