A-SVG STATCOM using bridge full-controlled power electronic devices consisting of converter for dynamic reactive power compensation, simple structure, low cost, mature technology, easy to implement. Refers to the basic principle of the bridge circuit since the commutation reactor directly through power line in parallel, appropriately adjusting the AC side of the bridge circuit output voltage of the phase and amplitude control of the alternating or direct current side, so that the circuit is absorbed or emitted satisfy reactive current required to achieve the purpose of dynamic reactive power compensation. System components 1. The world's leading power components and efficient use of the world's leading inverter IGBT module, the main circuit to control PWM full-bridge converters, inverters with high efficiency and high reliability. 2. Digital control system uses 32-bit high-speed floating-point DSP control processing technology, high-speed testing and operation, to ensure accurate detection and compensation of reactive power control. Full digital control system, the control process implemented by software, making the whole control system is simpler and more reliable. 3. Monitoring and Display System color touch screen, user-friendly design, flexible operation. Run the display parameters, working status, also with fault display and record historical events. Via remote communication interface with PC software communication, real-time monitoring. 4, the system capacity configuration 100kVar below capacity SVG single modular way, 100kVar-300kVar of SVG using standalone or modular parallel can, 300kVar Above all use multi-parallel mode. Other heavy load applications 1. mill (metallurgy, petroleum, chemical industry) 2. electric arc furnaces (metallurgy, petroleum, chemical industry) 3. electric locomotives, rail power supply systems (electrified railway and locomotive industries) 4. hoist, etc. ( coal mining industry)