On top of power electronics converters, combining the IoTs connecting online power systems with data science technologies forms a smarter solution to optimize power and energy operation planning, management and control as micro-grids, and/or a smart grid making a superior energy network in a more effective and intelligent way. Modern power electronics converters are involved in applications such as electrical-machine-motion-control, switched-mode power supplies, renewable energy and storage systems, distributed power generators, power quality compensators, and vehicle chargers. The main purpose of power electronics is to control the flow of electric energy by processing the power electronics switches with storage elements to control its voltage and current to suit the user needs. Wai-Hei Choi, in Pathways to a Smarter Power System, 2019 9.2 Power Electronics Converters The vast majority of contemporary designs of both isolated and nonisolated converters is based upon the application of two basic concepts: the forward-mode and a flyback or boost-mode converter. Auburn, NY: General Electric Co., Semiconductor Products Dept., 1979. † For reliable operation, it is suggested and recommended that all voltage and current ratings be increased to 125% of the required maximum.įrom Application Note 200.87. Power output limited.Ĭ 1 and C 2 have high ripple current requirements. Highest operating frequency.Ĭontinuous input and output current. V C R 1 = 1.5 V I N f o r D = 0.33 V C R 1 = 2 V I N f o r D = 0.50 V C R 1 = 2.5 V I N f o r D = 0.60Ĭontinuous input and output current. I C R 1 = 1.5 I R L f o r D = 0.33 I C R 1 = 2 I R L f o r D = 0.50 I C R 1 = 2.5 I R L f o r D = 0.60 V C E O = 1.5 V I N f o r D = 0.33 V C E O = 2 V I N f o r D = 0.50 V C E O = 2.5 V I N f o r D = 0.60
I c = 1.5 I R L for D = 0.33 I c = 2 I R L for D = 0.50 I c = 2.5 I R L f o r D = 0.60 Requires auxiliary power supplies for control circuit.Ĭross conduction of Q 1, Q 2 possible. Collector current reduced as a function of N 2/ N 1. Preferred to circuit F where high power required. V C R 1 = 2 V I N ( N 2 / N 1 ) V C R 2 = 2 V I N ( N 2 / N 1 ) V C R 1 = V C R 2 = V C R 3 = V C R 4 = V I N V C R 5 = V C R 6 = 2 V I N ( N 2 / N 1 ) I C R I = I C R 2 = ( I M A G / 2 ) ( τ / T ) I C R 3 = I C R 4 = ( I M A G / 2 ) ( τ / T ) I C R 5 = I C R 6 = I R L / 2 Requires auxiliary power supplies for control circuits. Poor transient response: High parts count. Collector current reduced by ratio of N 2/ N 1. Collector current reduced by turns ratio of transformer. V C R 1 = V C R 2 = V I N V C R 3 = V C R 4 = V I N ( N 2 / N 1 ) V C R I = V I N ( 1 + N 3 / N 1 ) V C R 3 = V I N ( N 2 / N 3 ) V C R 3 = V I N ( N 2 / N 1 )
I C R I = I C R 2 = ( I M A G / 2 ) ( τ / T ) I C R I = I M A G / 2 ) ( τ / T ) I C R 2 = I R L ( τ / T ) I C R 3 = I R L ( T − τ ) / T I C M A X = ( N 2 / N 1 ) ( I R L + Δ I L I / 2 ) + I M A G I C M A X = I R L ( N 2 / N 1 ) ( I R L + Δ I L I / 2 ) + I M A G Voltage inversion without using a transformer.