326results about How to "Achieve electrical isolation" patented technology

The invention discloses an insulated gate bipolar translator (IGBT) series connection type high-voltage pulse generator. The voltage is provided for the high-voltage pulse generator by a high-voltage power supply, and after the energy storage of an energy storage capacitor, high-voltage pulses are generated through a multistage IGBT series connection circuit. A programmable logic controller (PLC) generates pulse-width modulation (PWM) control pulses, the PWM control pulses are input into an optical fiber isolation circuit after passing through a PWM amplification circuit, further, the IGBT series connection circuit is driven, and the power supply required by the work of the IGBT series connection circuit is provided by a secondary circuit of the isolation power supply connected with the IGBT series connection circuit. Commercial electricity is changed into direct current through a rectifying circuit and a filter circuit, the direct current is changed into high-frequency square waves through a high-frequency power metal-oxide-semiconductor field-effect transistor (MOSFET) full-bridge inverter circuit driven by a power MOSFET driving circuit, and the high-frequency square waves are input into the secondary circuit of the isolation power supply after being isolated by a series connection magnetic ring circuit. When the IGBT series connection circuit generates faults, fault signals are input into the PLC through a fault output circuit and an optical fiber feedback circuit, the PLC interrupts control signals so that the IGBT series connection circuit is in a switch-off state, and the whole system is further protected.