Harmonic Investigation and Simulation of Full Bridge LCL Resonant Inverter

2011 ◽  
Vol 403-408 ◽  
pp. 3600-3607
Author(s):  
S. Selvaperumal ◽  
C.Christober Asir Rajan
Keyword(s):  
Power Systems ◽  
High Frequency ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Zero Voltage Switching ◽  
Resonant Inverter ◽  
Ac Power ◽  
Resistive Loads ◽  
Zero Voltage ◽  
Voltage Switching

This paper presents 250W, 20 KHz LCL resonant inverter having Efficiencies greater than 95% were obtained down to resistive loads of 50%. Efficiencies greater than 80% were obtained at significantly reduced loads (11%). Operation above resonance was utilized to increase the efficiency and maintain zero voltage switching (ZVS) for varied loads. Total harmonic distortion (THD) of less than 8% was achieved for all resistive loads. The above results were obtained from evaluation version of PSIM also used to model the LCL topology for varied loads and LCL configurations. A LCL Resonant Inverter is proposed for applications in high frequency distributed AC power systems.

scholarly journals PERANCANGAN E CLASS ZERO-VOLTAGE-SWITCHING π1b RESONANT INVETER FREKUENSI RENDAH DENGAN PEMICUAN IC SG 3524

TRANSIENT ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 92
Author(s):  
Romualdy Widiyanto ◽  
Mochammad Facta ◽  
Agung Warsito
Keyword(s):  
Duty Cycle ◽  
Zero Voltage Switching ◽  
Resonant Inverter ◽  
Zero Voltage ◽  
Voltage Switching

Photovoltaic merupakan sumber energi terbarukan yang banyak dikembangkan, namun output dari photovoltaic masih dalam bentuk arus searah (DC). Oleh karena itu, diperlukan perangkat yang bisa mengubah tegangan DC menjadi tegangan arus bolak balik (AC). E class zero-voltage-switching resonant inverter sebagai salah satu konverter DC ke AC akan diimplementasikan. Rangkaian E class zero-voltage-switching resonant inverter dikontrol melalui sinyal analog PWM yang dibangkitkan IC SG3524. Penggunaan ZVS (Zero Voltage Switcing) memiliki tujuan untuk mengurangi kerugian tegangan pada proses switching MOSFET. Rangkaian resonan π1b dirancang dan digunakan untuk memperbaiki bentuk gelombang keluaran dan meningkatkan tegangan keluaran inverter. Percobaan dilakukan dengan variasi beban, duty cycle, dan frekuensi untuk menyelidiki respon E class zero-voltage-switching π1b resonant inverter. Beban berupa lampu pijar 15W, lampu pijar 25W, dan motor induksi satu fasa capacitor run. Dari hasil uji tegangan keluaran didapatkan bahwa nilai tegangan keluaran meningkat dari frekuensi 49Hz ke 50Hz, kemudian nilai tegangan keluaran menurun dari frekuensi 50Hz ke 51Hz. Pada variasi duty cycle, tegangan output meningkat dari duty cycle 10% ke 50% dan kemudian tegangan output menurun dari duty cycle 50% ke 90%. Frekuensi juga mempengaruhi kecepatan putar motor, seiring dengan meningkatnya frekuensi, kecepatan putaran motor juga meningkat.

Series-Loaded Resonant Converter DC-DC Buck Operating for Low Power

2017 ◽  
Vol 8 (1) ◽  
pp. 159
Author(s):  
M. F. Omar ◽  
H. C. M. Haris
Keyword(s):  
Low Power ◽  
High Frequency ◽  
Buck Converter ◽  
Soft Switching ◽  
Switching Topology ◽  
Resonant Converter ◽  
Zero Voltage Switching ◽  
Bridge Rectifier ◽  
Zero Voltage ◽  
Voltage Switching

This paper presents the functions of Series-Loaded Resonant Converter (SLRC). Series Loaded Resonant DC-DC converter is a type of soft-switching topology widely known for providing improved efficiency. Zero voltage switching (ZVS) buck converter is more preferable over hard switched buck converter for low power, high frequency DC-DC conversion applications. Zero Voltage switching techniques will be used to improve the efficiency of current and voltage at the series loaded half-bridge rectifier. The results will be described from PSIM simulation, Programming of MATLAB calculation and hardware testing.

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