Frequently Asked Questions (FAQ)
Q20: What are the benefits of 100-350VDC PV input range?
A: Solar panel cleaning solution advantage:
Flexible 2~5-series panel adaptation
Maintains minimum operating voltage during cloudy/rainy days
Prevents system failure from partial shadingQ19: How do PV air conditioners intelligently switch energy sources?
A: Dual-energy management strategy, solar panel cleaning solution** compatible:
Daytime: Prioritizes PV power (MPPT efficiency >99%)
Night: Auto-switches to grid (<20ms transition)Q18: How do large VRF systems prevent communication conflicts among 128 indoor units?
A: VRF air conditioning system coordination:
① Auto-addressing: Host assigns unique IDs during power-on
② Current loop communication: 50m anti-interference range
③ Group response: Broadcast command + time-division feedback (<10ms delay)Q17: How does mini-VRF system achieve 1-to-4 flexible configuration?
A: HVAC variable refrigerant flow systems tech:
Outdoor unit calculates total load of 4 indoor units in real-time
Electronic expansion valve independently regulates refrigerant flow per indoor unit
Compressor frequency accuracy ±0.1HzQ16: How does the ultra-compact mainboard save space?
A: 3 phase BLDC motor controller+Driver integration design:
60% smaller volume than split versions
High integration: STM32F4 + IPM module + isolated commsQ15: How do inverter portable ACs adapt to global voltages?
A: Variable frequency drive air compressor design:
Voltage range: 160-275VAC
Onboard high-frequency PFC (110V/220V compatible)
Bus ripple suppression (<5% fluctuation)Q14: Why choose Vienna topology for three-phase PFC?
A: Power supply PCB board advantages:
Neutral-free design: Eliminates neutral cable, reduces 30% cabling cost and 15% space
Inherent shoot-through prevention: Three-level modulation eliminates bridge arm short-circuit risk (90% lower failure rate vs. traditional two-level topology)99% efficiency: With SiC devices (e.g., Tektronix G3 chip), full-load ripple <1%
Q13: How do high-power PFC solutions handle grid fluctuations?
A: PFC power supply adaptive tech:
Dynamic bus control: Maintains >98% efficiency during 20% voltage dips (e.g., Korean grid tests)
Active harmonic suppression: THD <5% (IEC 61000-3-2 Class A compliant)
Inrush current protection: NTC thermistor + pre-charge circuit (100A/10ms surge withstand)Q12: How does the 3.5kW fan board achieve reverse-wind start?
A: Sensorless BLDC controller algorithm:
① Auto-detects fan position pre-start
② Applies reverse torque unlock
③ Accelerates forward within 0.5sQ11: Can controller communication protocols be customized?
A: HVAC circuit board supports:
Standard: Modbus RTU/TCP
Custom: BACnet/CANopen compatibility (feasibility study required)Q10: How to select among three wired controllers?
A: Thermostat for heat pump matching guide:
Model Key Advantages Recommended Use Controller1 Color LCD + full touch Premium residences/hotels Controller2 VA screen + button touch Commercial pools/HVAC Controller3 TN screen + physical keys Cost-sensitive projects Q9: How does the EU-compliant solution achieve multi-end control?
A: VRF air conditioning system core technologies:
Split architecture: Outdoor integrated PCB + indoor main controller (50% faster maintenance)
Dual RS485 channels: Independent control for wired controller & remote monitoring
Full end-unit compatibility: Floor heating/AC/radiators/pool unitsQ8: How does the triple-supply system integrate boilers/PV?
A: Pre-configured interfaces:
PV: 100-350VDC wide voltage input
Boiler: Plug-and-play Modbus RTU protocolQ7: How does the 25HP high-power drive board ensure reliability?
A: Triple protection for industrial DC motor controller:
Power module: 1200V/100A IGBT (supports 200A peak current, IEC 62109 certified)
Communication isolation: Dual-isolated RS485 (≥2500V AC isolation, suppresses ground loop interference)Cooling solution:
Base material: High-performance aluminum substrate (30oz thickened copper layer, ceramic insulation)Active cooling: Intelligent temperature-controlled fan (50℃ start, ±5% speed accuracy)
Q6: How does the drive board support different fan types?
A: Dual-mode BLDC motor controller flexibility:
Built-in BLDC driver: Direct PWM control (no external algorithm)
External brushless motor: Onboard full FOC algorithm driveQ5: How does the single-phase compressor drive board (2-8HP) improve efficiency?
A: Compressor driver board Integrates three core technologies:
① High-efficiency flux-weakening control (18% reactive loss reduction)
② Bus voltage ripple suppression algorithm (ripple <1%)
③ Adaptive torque compensation (35dB start/stop vibration reduction)Q4: Can cooling solutions be customized per client requirements?
A: Supports dual-mode **air source heat pump controller
Refrigerant cooling: -30℃ ultra-low temp environments (e.g., Nordic projects)
Air cooling: Standard climate zones (25% cost reduction)Q3: How does the three-phase electrolytic capacitor-free solution simplify systems?
A: High-voltage film capacitors enable compact **3 phase brushless motor driver:
✅ Eliminates 3 LC filter inductors (saves space and cost)
✅ Triple-board integration: Filter board + capacitor board + inverter module
✅ Reduces wiring complexity by 40%Q2: Why recommend integrated outdoor PCB design for heat pumps below 10HP?
A: Monolithic heat pump circuit board replacement reduces 30% wiring, saves 40% installation time, and lowers cost by 15%
Q1: How does the two-in-one water unit achieve 0.1℃ precise temperature control?
A: Utilizes proprietary 180° sine wave space vector algorithm + adaptive torque compensation technology with high-precision temperature sensor closed-loop control for heat pump control board*, ensuring room temperature fluctuation ≤ ±0.1℃.