EEL 646 POWER ELECTRONICS II Exploring Boost ZVS
Description: EEL 646 POWER ELECTRONICS II Exploring Boost ZVS Topologies Lecture 6B M-Type Boost ZVS Topology vc(t) resonates with L to make the voltage across the main switch reach zero. Consider the following five different possible topologies.
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slide1. EEL 646 POWER ELECTRONICS II Exploring Boost ZVS Topologies Lecture 6B<br>
slide2. M-Type Boost ZVS Topology vc(t) resonates with L to make the voltage across the main switch reach zero.<br>
slide3. Consider the following five different possible topologies. Identify which one is the
valid L-Type ZVS Boost converter<br>
slide5. Achieving ZVS is not possible across the main switch given LC tank dynamic behavior<br>
slide6. Topology 2 Assume S is closes, then D is either on or off. By inspection, D is open since vd= -Vo.
The current iL will keep decreasing since vL= -Vo. The switch current equals Iin. And the circuit will not be stable<br>
slide7. Topology 2 Depending on the value of vc, the diode can be on or off.
If vc > Vo , D is on, then vc= Vo and vL=0. The switch will never close at ZV. If vc < Vo , D is off, then vc and iL will resonate not possible to achieve ZVS before turning the main switch on.<br>
slide8. Topology 3<br>
slide11. Topology 1<br>
slide2. M-Type Boost ZVS Topology vc(t) resonates with L to make the voltage across the main switch reach zero.<br>
slide3. Consider the following five different possible topologies. Identify which one is the
valid L-Type ZVS Boost converter<br>
slide5. Achieving ZVS is not possible across the main switch given LC tank dynamic behavior<br>
slide6. Topology 2 Assume S is closes, then D is either on or off. By inspection, D is open since vd= -Vo.
The current iL will keep decreasing since vL= -Vo. The switch current equals Iin. And the circuit will not be stable<br>
slide7. Topology 2 Depending on the value of vc, the diode can be on or off.
If vc > Vo , D is on, then vc= Vo and vL=0. The switch will never close at ZV. If vc < Vo , D is off, then vc and iL will resonate not possible to achieve ZVS before turning the main switch on.<br>
slide8. Topology 3<br>
slide11. Topology 1<br>