By Luo F.L., Ye H.

ISBN-10: 0849319560

ISBN-13: 9780849319563

ISBN-10: 0849372399

ISBN-13: 9780849372391

There are a number of households of DC/DC converters comprising countless numbers of other topologies. Sorting during the a variety of houses and features is clearly a frightening activity. Culled from the pages of the groundbreaking complicated DC/DC Converters, this publication presents a concentrated, concise evaluate of greater than 50 topologies of multi-quadrant converters. All points of those topologies are illustrated via designs constructed by means of the authors over the years. The booklet starts with multiple-quadrant converters via switched part (SC and SI) converters, multiple-lift push-pull switched-capacitor converters, and eventually, multiple-quadrant soft-switching converters.

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Sample text

Both currents iL1 and iL2 decrease. Inductor L1 transfers its stored energy to capacitor C. In the mean time current iL2 flows through the source V1. 3c. 3a and b. Actually, the variations of currents iL1 and iL2 are small so that iL1 ª IL1 and iL2 ª IL2 The charge on capacitor C increases during switch off and on: Q+ = (1 – k)T IL2 Q– = kTIL1 In a whole period investigation, Q+ = Q–. 15) Since capacitor C performs as a low-pass filter, the output current IL2 = I2 The source current i1 = iL1 + iL2 during switch-on, and i1 = 0 during switchoff.

In this case capacitors C1 and C2 are discharged via the circuit S1–V1–S4–C2–S7–C1, and the voltage across capacitor C1 and C2 is decreasing. Capacitors C1 and C2 transfer the energy from the load to the source. 7c. 8. Since V1 < V2 two capacitors C1 and C2 can be used in parallel. During switch-on state, switches S2, S4, S6, and S8 are closed. In this case capacitors C1//C2 are charged via the circuit V2–S2–C1//C2–S4, and the voltage across capacitors C1 and C2 is increasing. During switch-off state, switches S1, S4, S6, and S8 are closed.

When switch S1 is on, the source current i1 = iL1. Inductor L1 absorbs energy from the source. In the mean time inductor L2 absorbs energy from capacitor C, current iL1 increases and i2 decreases. When switch S1 is off, source current i1 = 0. Current iL1 flows through the free-wheeling diode D2 to charge capacitor C and increase current i2. Inductor L1 transfers its stored energy to capacitor C and the load V2. Current iL1 decreases and i2 increases. 4c. Actually, the variations of currents iL1 and iL2 are small so that iL1 ª IL1 and iL2 ª IL2 = I2.

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Advanced Multi-Quadrant Operation DC/DC Converters by Luo F.L., Ye H.

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