• The Transactions of the Korean Institute of Power Electronics
• /
• v.6 no.5
• /
• pp.394-399
• /
• 2001

In this Paper, the development of the power supply for dry scrubber is discussed. 1500w, 100kHz power supply Is designed and tested. The main power stage is used for the FB PWM inverter with an LC filter in the secondary circuit. The operation characteristics of power supply are verified by simulation and experimental results.

• The Transactions of the Korean Institute of Power Electronics
• /
• v.19 no.1
• /
• pp.31-40
• /
• 2014

This paper describes an optimal configuration for multi-central inverters in a medium-voltage (MV) grid, which is suitable for large-scale photovoltaic (PV) power plants. We theoretically analyze a proposed common-mode equivalent model for problems associated with multi-central transformerless-type three-phase full bridge(3-FB) PV inverters employing two-winding MV transformers. We propose a synchronized PWM control strategy to effectively reduce the common-mode voltages that may simultaneously occur. In addition, we propose that the existing 3-FB topology may also have the configuration of a multi-central inverter with a two-winding MV transformer by making a simple circuit modification. Simulation and experimental results of three 350kW PV inverters in a multi-central configuration verify the effectiveness of the proposed synchronization control strategy. The modified transformerless-type 3-FB topology for a multi-central PV inverter configuration is verified using an experimental prototype of a 100kW PV inverter.

• Proceedings of the KIPE Conference
• /
• 2001.10a
• /
• pp.113-116
• /
• 2001

In this paper, the development of the LF power supply for dry scrubber is discussed. 1500kW, 100kHz LF power supply is designed and tested. The main power stage is used for the FB PWM inverter with an LC filter in the secondary circuit. The operation characteristics of LF power supply are verified by simulation and experimental results.

• Proceedings of the KIPE Conference
• /
• 1998.10a
• /
• pp.442-446
• /
• 1998

With the advent of the high-speed microprocessor and DSP, the possibility of executing a control strategy in digital domain has become a reality. By the use of the DSP and microprocessor controller, many high power converters such as especially inverter and motor drive system may be enhanced resulting in the improved robustness to EMI, the ability to communicate the operating conditions and the ease of adjusting the control parameters. But, the digital controller using DSP or microprocessor is not applied in the high frequency switching power supplies, especially full bridge dc/dc converter. So, this paper presents the method and realization of designing a digital-to-phase shift PWM circuit for full digital controlled phase-shifted full bridge dc/dc converter with zero voltage switching. The operating principles, simulation and experimental results will be presented.

• Proceedings of the KIPE Conference
• /
• 2001.07a
• /
• pp.576-579
• /
• 2001

In this paper, the development of the LF power supply for dry scrubber is discussed. 1500kW, 100kHz LF power supply is designed and tested. The main power stage is used for the FB PWM inverter with an LC filter in the secondary circuit. The operation characteristics of LF power supply are verified by simulation and experimental results.