DOE Awards OCC to Demonstrate Ultra-fast 4-Quadrant Capability to Modernize Grid and Increase DER Penetration.

OCC, Inc. developed a 4-Quadrant “Reactive Power Supply Inverter (RPSI)” to enable DER to rapidly deliver/absorb Real (P) and Reactive (Q) power to/from the grid to stabilize grid frequency and voltage while generating or using power.

The OCC-RPSI is based on breakthrough OCC technology that delivers a new paradigm: 4 quadrant conversion (+/-P, +/-Q) of 3-phase power. The hardware-based control enables extremely fast response and a >10x reduction in complexity to achieve unmatched performance and reliability, necessary for large-scale widely deployed real-time power quality control and grid stabilization.OCC, Inc. has demonstrated a 40 kVA OCC- RPSI with ultra-fast, precise, and high-quality, bidirectional flow of P and Q with >0.99 power factor, ~1% total harmonic distortion, ~50 microseconds rail-to-rail step response, and 97% efficiency. OCC-RPSI delivers unmatched speed, precision, and smoothness for step response or continuous adjustment in P or Q to enable real-time control of grid voltage/frequency necessary for effective grid stabilization. The OCC-RPSI is fundamental to DOE’s mission of grid modernization and increased renewables penetration.

P step from power generation to power use in ~50 microseconds (yellow phase-a voltage, green phase-a current, purple P commend).

Q step from capacitive to inductive in ~50 microseconds (yellow phase-a voltage, green phase-a current, purple P commend).