New variant of electric vehicle

Its a very good circuit. Do you have any product made by the circuit. We are interested in it.
Now I have a question to ask, hope to get your explanation.
In the original boost circuit, we can obtain a duty greater than 50%. but in your circuit, it has to be less than it. because its positive active transformer.
I try to modify it to left circuit as shown B. We can reduce one transformer with a mutual inductor. or say, reduce an inductor. it seems equal to your circuit?
Is it right?

Circuit B is better than A because in circuit A, the left side of the transformer has no free-wheeling diode, which will place a large amount of voltage across the transistor, breaking it.

You need another diode in circuit A. Circuit B is fine the way it is.

Hello, cnpower.

Your circuit is a standart pusp-pull converter without one switch. It does not works as current generator.

To estimate the overall performance of the invented boost converter, the prototypes of the conventional boost converter and the boost converter with a continuous output current have been constructed.

Both prototypes were investigated under the following conditions: input source V1 voltage is 50V, output voltage V_R1 is 72V, load R1 resistance is 3 Ohm, inductor L1 inductance is 100µH, output capacitor C1 capacitance is 10.000µF.

Current measurement was performed by LEM of the CLN-50 type with t = 3µs.

Fig. 1 shows experimental waveforms of output current I_out and output voltage ripples in the conventional boost converter and in the invented CCM boost converter, both working at frequency of 25kHz.

One can see that the output current in the invented CCM boost converter is continuous. The ripples of the output voltage and the ripples of the output current in the invented CCM boost converter are reduced many times compared to conventional boost converter.

a)

b)

Fig. 1. Output current (20A/div., lower trace) and output voltage ripples (2V/div., upper trace) waveforms in the conventional boost converter (a) and in the invented CCM boost converter (b)