| http://www.w3.org/ns/prov#value | - batteries; a bidirectional powering thyristor connected in series with said switching means and said electric motor; a flywheel diode connected in parallel with said motor, a bidirectional main braking thyristor and an auxiliary braking thyristor connected in series, said series connections being parallel to said motor; and a commutation circuit including a capacitor and reactor, said commutation
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