scholarly journals Compact Switched Mode Power Supply for Medium Voltage Drives

10.29007/668p ◽  
2018 ◽  
Author(s):  
Ankit Modi ◽  
Prof. Dr. P. N. Tekwani ◽  
Vinod Patel
Keyword(s):  
Power Supply ◽  
Control Method ◽  
Current Mode ◽  
Line Load ◽  
Medium Voltage ◽  
Current Mode Control ◽  
Multiple Outputs ◽  
Converter Topology ◽  
Switched Mode Power Supply ◽  
Driver Section

A switched mode power supply (SMPS) with multiple outputs has been developed which satisfies the need of isolation of control circuit power supply and driver section power supply for a medium-voltage electrical drive. It means that there is no need of extra components for isolation. For this SMPS, fly-back converter topology along with current mode control method is selected and its performance is observed for line, load as well as cross regulation with other tests. This SMPS generates multiple outputs of +5 V, +24 V, +/- 15 V and five +24 V isolated output voltages.

A Digital Peak Current-Mode Control PFC with Bifurcation Control

2013 ◽  
Vol 300-301 ◽  
pp. 1419-1422
Author(s):  
Chung Wen Hung ◽  
Li Sheng Zhang ◽  
Lung Chu Lu
Keyword(s):  
Power Factor ◽  
Control Method ◽  
Harmonic Oscillation ◽  
Current Mode ◽  
Bifurcation Control ◽  
Peak Current ◽  
Current Mode Control ◽  
Mode Control ◽  
Bifurcation Behavior ◽  
Peak Current Mode Control

A boost power factor correction (PFC) in continuous conduction mode (CCM) by the digital peak current-mode control method with bifurcation control is discussed in this paper. The proposed method is used to prevent the inductor current bifurcation behavior, which is caused by sub-harmonic oscillation when the duty cycle is upon to 50 percent. The bifurcation behavior will increase the inductor current ripple and dissipation, then reduce the Power Factor (PF). Different from the ramp compensation signal performed with analog IC in some papers, a MCU is used to be the controller and also provides the digital compensation function in this paper. With the timer, ADC, PWM, and comparator which are built in the MCU, the necessary parameters will be measured without extra components and additional cost. The proposed method is based on those parameters. In this paper, the MATLAB/Simulink simulation results show the proposed method workable.

Single Inductor Bipolar Outputs DC-DC Converter with Current Mode Control Circuit

2013 ◽  
Vol 534 ◽  
pp. 220-226 ◽  
Author(s):  
Nobukazu Takai ◽  
Takashi Okada ◽  
Kenji Takahashi ◽  
Hajime Yokoo ◽  
Shunsuke Miwa ◽  
...  
Keyword(s):  
Power Supply ◽  
Supply Voltage ◽  
Current Mode ◽  
Cmos Process ◽  
Power Supply Voltage ◽  
Negative Power ◽  
Current Mode Control ◽  
Mode Control ◽  
Digital Still Camera ◽  
Simulation Results

Mobile equipment such as organic-EL display, digital still camera and so on re-quire both positive and negative power supply voltage to obtain high quality. Single InductorMultiple-Output (SIMO) DC-DC converter can provide a pair of positive and negative outputvoltages with only one external inductor. This paper describes SIMO DC-DC Converter usingproposed current-mode control (CMC) circuit. The proposed CMC circuit realizes high responsespeed for the change of load current. Spectre simulations with 0.18m CMOS process parameterare performed to verify the validity of the proposed converter. The simulation results indicatethat the proposed converter has higher response time compared with conventional converter.

scholarly journals Circuit Structure and Control Method to Reduce Size and Harmonic Distortion of Interleaved Dual Buck Inverter

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1531
Author(s):  
Min-Gi Cho ◽  
Sang-Hoon Lee ◽  
Hyeon-Seok Lee ◽  
Yoon-Geol Choi ◽  
Bongkoo Kang
Keyword(s):  
Output Power ◽  
High Power ◽  
Control Method ◽  
Power Conversion ◽  
Harmonic Distortion ◽  
Current Mode ◽  
Total Harmonic Distortion ◽  
Current Mode Control ◽  
Circuit Structure ◽  
And Control

A new circuit structure and control method for a high power interleaved dual-buck inverter are proposed. The proposed inverter consists of six switches, four diodes and two inductors, uses a dual-buck structure to eliminate zero-cross distortion, and operates in an interleaved mode to reduce the current stress of switch. To reduce the total harmonic distortion at low output power, the inverter is controlled using discontinuous-current-mode control combined with continuous-current-mode control. The experimental inverter had a power-conversion efficiency of 98.5% at output power = 1300 W and 98.3% at output power = 2 kW, when the inverter was operated at an input voltage of 400 VDC, output voltage of 220 VAC/60 Hz, and switching frequency of 20 kHz. The total harmonic distortion was < 0.66%, which demonstrates that the inverter is suitable for high-power dc-ac power conversion.

Design of Hi-Power Continuously Adjustable Constant Current Source Based on UC3846

2012 ◽  
Vol 430-432 ◽  
pp. 1519-1523 ◽  
Author(s):  
Yong Li ◽  
Cheng Rui Zhang ◽  
Ming Xing Lin ◽  
Yong Hua Li
Keyword(s):  
Power Supply ◽  
Control Method ◽  
Dynamic Performance ◽  
Current Source ◽  
Current Mode ◽  
Response Speed ◽  
Constant Current ◽  
Constant Current Source ◽  
Good Guide ◽  
Reduce Risk

This paper designs the switch adjustable constant current source based on the current mode PWM control chip UC3846, the power reach to 8kw, current 0~15A continuously adjustable. It uses the I2 control method to ensure the accuracy of the output current stability and improve the dynamic performance and response speed of the system. Feedback signals achieve in external circuit of the chip UC3846, they independent to each other to ensure the accuracy of the control signal. The model of UC3846 and the power supply were built by using Matlab Simulink separately. After building those models, the circuit was simulated by using Simulink, and its simulation results reflected the output of power supply truthfully which played a good guide for the circuit design and experiment, to avoid detours and reduce risk.

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