I. Basic Information
Model：D1961SH45TS02
Brand：ABB
Product Positioning
The ABB D1961SH45TS02 is an industrial-grade high-voltage high-power thyristor (SCR) power module. Specially designed for high-voltage, high-current and high-reliability continuous power conversion conditions, it serves as the core power component for high-voltage frequency conversion, high-voltage soft start, static var compensator (SVC), active power filter, rectifier and inverter systems, rolling mill drive, mine hoist and rail transit power supply systems. Featuring high voltage resistance, large current capacity, low loss, fast recovery and strong impact resistance, it adapts to industrial high-voltage high-power power conversion scenarios, fully complying with national and IEC international industrial device standards, and is widely used in power, metallurgy, mining, chemical and rail transit heavy-duty industries.
Hardware Architecture
Adopting a single-chip high-voltage thyristor integrated packaging structure, the module is built with high-performance PN junction wafers, fast recovery buffer structure, optimized voltage and current sharing circuit and isolated heat dissipation substrate. The industrial standard high-power base packaging adopts precise passivation technology for internal chips, providing excellent high-voltage insulation and current carrying capacity. The integrated independent pin structure of anode, cathode and gate with anti-interference gate trigger circuit ensures accurate reception of control trigger signals and stable on-off control. The high-strength flame-retardant insulating shell and integrated metal heat dissipation base feature high heat dissipation efficiency and low thermal resistance, quickly dissipating chip accumulated heat under high-power working conditions and avoiding high-temperature burnout, adapting to long-term full-load continuous operation.
Mounting Specification
Adopting standard industrial base pressure mounting structure, it fits flat installation of high-power radiators with even heat conduction and firm bolt fastening, achieving ultra-low contact thermal resistance. The compact high-power density design requires no complex installation accessories, suitable for integrated assembly of high-voltage power cabinets and power unit equipment. It supports commissioning-free static installation, only requiring routine insulation test and trigger verification after assembly before operation, adapting to full scenarios of new equipment assembly, faulty module replacement and old power conversion equipment upgrading.
Compatible Systems
Fully compatible with ABB full-series high-voltage power conversion control systems, high-voltage frequency conversion power units and SVC reactive power compensation controllers. It matches mainstream domestic and foreign high-power power conversion equipment trigger control boards, pulse drive units and power protection systems, adapting to conventional high-voltage thyristor trigger logic, phase-shift control algorithm and over-current/over-voltage protection logic. It seamlessly connects with industrial PLC, power conversion controllers and upper monitoring systems, supporting power regulation, status monitoring and fault protection linkage, meeting the full-process requirements of automatic control, safety protection and compliant operation of industrial high-power power conversion equipment.
Product Characteristics
Featuring ultra-high voltage resistance and large current capacity, the module adapts to industrial high-voltage high-power power conversion conditions with high power density and equipment integration. The low on-state loss and low switching loss design reduces operating energy consumption and heat generation with excellent long-term energy efficiency. The superior fast recovery performance suppresses high-frequency switching spike voltage and harmonic interference effectively, improving power conversion system stability. Accurate gate triggering and excellent conduction consistency ensure good current sharing for parallel multi-module operation, adapting to high-power parallel expansion scenarios. The industrial-grade reinforced packaging resists voltage impact, thermal fatigue and electromagnetic interference, tolerating frequent start-stop, load fluctuation and high-temperature high-pressure harsh conditions, supporting 7×24-hour uninterrupted stable operation with high reliability and long service life.
II. Technical Specifications
1. Core Electrical Parameters
Rated Repetitive Peak Reverse Voltage (VRRM): 4500V ultra-high voltage resistance grade, adapting to industrial medium and high-voltage power conversion conditions, effectively resisting grid surge and switching spike voltage impact. Rated Average On-state Current (IT(AV)): 45A rated current, matching medium and small-power high-voltage power conversion units, meeting power demands of conventional high-voltage compensation, rectification and speed regulation equipment. Low On-state Peak Voltage Drop (VTM) reduces operating power consumption and heat generation, improving overall system efficiency. Ultra-low Reverse Leakage Current (IRRM) ensures low standby loss and excellent insulation performance, avoiding excessive static power consumption and abnormal module heating. Accurate gate trigger voltage and current parameters ensure high conduction consistency and fast response, adapting to various phase-shift and pulse trigger control modes.
2. Switching & Recovery Characteristics
Reverse Recovery Time (trr): Standard fast recovery level enables rapid switching state transition, effectively suppressing voltage oscillation, harmonic interference and switching loss under high-voltage conditions, adapting to high-frequency power conversion regulation working conditions. Stable switching parameters show no obvious drift under high/low load and high/low temperature conditions, with accurate and controllable on/off actions without false triggering or turn-off failure. Excellent dynamic voltage sharing performance ensures uniform voltage distribution for series-connected multi-modules, preventing single-module overvoltage breakdown and adapting to high-voltage multi-stage series power conversion topologies.
3. Thermal & Heat Dissipation Parameters
Packaging Structure: Metal-base insulated packaging with excellent thermal conductivity, adapting to forced and natural heat dissipation of high-power radiators. Ultra-low chip-to-base thermal resistance ensures efficient heat conduction without heat accumulation under full load, with no performance attenuation under high temperature. Excellent overload heat resistance enables short-term tolerance of impact and overload loads, with superior thermal fatigue resistance and no performance attenuation or structural aging after long-term frequent start-stop operation.
4. Environmental Operating Parameters
Operating Temperature：-40℃～+85℃, stable electrical parameters, switching characteristics and voltage resistance without drift in the full temperature range, adapting to harsh conditions such as high-temperature cabinets, outdoor power conversion cabinets and alternating high and low temperatures.
Storage Temperature：-40℃～+90℃, resistant to long-term high and low temperature storage without chip aging, parameter offset or packaging cracking.
Operating Humidity：5%~95% RH, non-condensing, adapting to humid, dusty and slightly corrosive cabinet environments without insulation degradation, electric leakage or creepage faults.
Working Condition Adaptation: Passed full industrial tests including high-voltage insulation, thermal cycle impact, EMC electromagnetic compatibility and static protection, stably resisting long-term grid fluctuation, load impact, high-frequency electromagnetic interference and continuous high-temperature conditions. Protection Grade: Standard industrial high-voltage power cabinet indoor installation protection, compliant with IEC power electronic device safety specifications.
5. Physical Parameters
Packaging Form: Standard industrial high-power high-voltage thyristor dedicated packaging with regular pin layout and sufficient high-voltage insulation spacing, meeting high-voltage electrical safety specifications. Mounting Method: Flat pressure bolt fastening, matching standard industrial radiator installation with high fitting accuracy and uniform heat dissipation. High structural strength resists vibration and extrusion, avoiding deformation and damage during transportation and equipment operation, adapting to long-term vibration working conditions of industrial equipment.
III. Key Features
1. High-Voltage High-Reliability Current Carrying for Heavy-Duty Power Conversion
With 4500V ultra-high voltage resistance and 45A rated current capacity, D1961SH45TS02 precisely matches industrial medium and high-voltage power conversion system conditions, stably withstanding high-voltage grid impact, instantaneous load overload and switching spike voltage to avoid module breakdown, electric leakage and failure. The chip adopts imported high-precision passivation technology with superior voltage resistance stability and current carrying consistency. It features strong adaptability for series and parallel multi-module application, meeting the design and expansion demands of high-power power conversion equipment.
2. Low Loss & Energy Saving with Superior Operational Stability
The low on-state voltage drop and low switching loss chip design significantly reduces operating power consumption and heat generation of power conversion equipment, lowering radiator load and equipment operation cost. The fast reverse recovery characteristic effectively suppresses voltage oscillation, harmonic distortion and electromagnetic interference during high-voltage switching, optimizing power quality and improving system operational stability, reducing grid harmonic pollution and equipment failure frequency.
3. Accurate & Controllable Triggering for Diverse Control Topologies
Featuring accurate and consistent gate trigger parameters, the module is highly adaptable to phase-shift triggering, pulse train triggering and wide-frequency triggering control modes, perfectly matching the regulation logic of various high-voltage power conversion control systems. Fast conduction response without delay or false triggering and stable turn-off performance ensure precise continuous power regulation, reactive power compensation and rectification voltage stabilization, guaranteeing the regulation accuracy and operational reliability of power conversion equipment.
4. Superior Environmental Adaptability for Harsh Industrial Conditions
The industrial-grade reinforced insulating packaging and ultra-low thermal resistance heat dissipation structure provide excellent high-temperature resistance, thermal fatigue resistance, vibration resistance and electromagnetic interference resistance. It operates stably without performance attenuation, electric leakage, breakdown or aging failure under long-term high-voltage, high-temperature, frequent load fluctuation and complex electromagnetic interference conditions, achieving ultra-low failure rate and adapting to heavy-industry continuous production scenarios.
5. Strong Universality for New & Old Equipment Renovation & Replacement
The standardized industrial packaging and universal electrical parameters are compatible with domestic and foreign high-voltage thyristor modules of the same specification, enabling direct replacement without modifying equipment topology and control procedures. It adapts to complete assembly of new high-voltage power conversion equipment, faulty module replacement and system upgrade & expansion of old SVC, high-voltage frequency conversion and rectification equipment, greatly reducing equipment renovation cost and downtime, meeting the requirements of compliant operation and annual inspection upgrading of industrial equipment.
IV. Working Principle
The ABB D1961SH45TS02 high-voltage thyristor module is a three-terminal controllable semiconductor power device. Based on the PN four-layer three-junction controllable conduction principle, it controls device turn-on and turn-off through gate trigger signals to realize controllable rectification, inversion, voltage regulation and reactive power compensation of high-voltage electric energy, serving as the core executive component for industrial high-power electric energy conversion. The overall workflow includes four core stages: cut-off standby, trigger conduction, steady-state current carrying and turn-off recovery.
Under standby conditions, the module bears system high voltage and remains in a high-resistance cut-off state with only minimal reverse leakage current, realizing high-voltage isolation. When the control system outputs accurate gate trigger pulses, the module PN junction conducts rapidly, switching from high-resistance to low-resistance conduction state to carry system high working current and complete power transmission and regulation.
During steady-state conduction, the module continuously carries current with ultra-low on-state voltage drop, ensuring stable operation of the power conversion system. The excellent heat dissipation structure continuously dissipates working heat to avoid high-temperature failure. When the system current crosses zero or the trigger signal is cancelled, the module completes reverse recovery rapidly and returns to high-voltage standby cut-off state. Through high-frequency and high-precision on-off cycles cooperating with system phase-shift logic, it realizes continuous power regulation, voltage stabilization, reactive power compensation and harmonic governance of high-voltage systems, ensuring safe and stable operation of power conversion equipment.
